./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.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 771a0d58841ee32dbcd22255998870d19f409341 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.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 771a0d58841ee32dbcd22255998870d19f409341 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:13:04,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:13:04,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:13:04,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:13:04,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:13:04,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:13:04,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:13:04,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:13:04,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:13:04,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:13:04,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:13:04,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:13:04,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:13:04,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:13:04,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:13:04,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:13:04,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:13:04,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:13:04,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:13:04,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:13:04,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:13:04,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:13:04,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:13:04,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:13:04,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:13:04,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:13:04,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:13:04,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:13:04,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:13:04,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:13:04,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:13:04,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:13:04,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:13:04,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:13:04,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:13:04,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:13:04,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:13:04,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:13:04,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:13:04,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:13:04,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:13:04,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:13:04,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:13:04,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:13:04,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:13:04,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:13:04,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:13:04,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:13:04,418 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:13:04,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:13:04,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:13:04,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:13:04,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:13:04,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:13:04,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:13:04,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:13:04,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:13:04,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:13:04,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:13:04,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:13:04,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:13:04,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:13:04,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:13:04,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:13:04,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:13:04,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:13:04,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:13:04,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 771a0d58841ee32dbcd22255998870d19f409341 [2021-08-29 13:13:04,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:13:04,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:13:04,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:13:04,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:13:04,708 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:13:04,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-08-29 13:13:04,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035c22e20/b1e7708ef7d949589b254ace533878c0/FLAGa1889c168 [2021-08-29 13:13:05,134 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:13:05,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-08-29 13:13:05,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035c22e20/b1e7708ef7d949589b254ace533878c0/FLAGa1889c168 [2021-08-29 13:13:05,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035c22e20/b1e7708ef7d949589b254ace533878c0 [2021-08-29 13:13:05,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:13:05,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:13:05,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:13:05,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:13:05,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:13:05,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bb38b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05, skipping insertion in model container [2021-08-29 13:13:05,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:13:05,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:13:05,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-08-29 13:13:05,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:13:05,705 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:13:05,745 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-08-29 13:13:05,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:13:05,765 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:13:05,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05 WrapperNode [2021-08-29 13:13:05,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:13:05,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:13:05,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:13:05,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:13:05,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:13:05,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:13:05,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:13:05,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:13:05,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:13:05,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:13:05,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:13:05,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:13:05,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (1/1) ... [2021-08-29 13:13:05,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:13:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:13:05,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:13:05,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:13:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:13:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:13:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:13:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:13:05,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:13:05,942 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-29 13:13:05,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:05 BoogieIcfgContainer [2021-08-29 13:13:05,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:13:05,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:13:05,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:13:05,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:13:05,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:13:05" (1/3) ... [2021-08-29 13:13:05,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c305258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:13:05, skipping insertion in model container [2021-08-29 13:13:05,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:05" (2/3) ... [2021-08-29 13:13:05,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c305258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:13:05, skipping insertion in model container [2021-08-29 13:13:05,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:05" (3/3) ... [2021-08-29 13:13:05,948 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-08-29 13:13:05,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:13:05,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 13:13:05,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:13:05,981 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:13:05,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 13:13:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:13:06,002 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:13:06,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:13:06,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:13:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:13:06,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-29 13:13:06,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:13:06,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073143577] [2021-08-29 13:13:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:06,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:13:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:13:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:06,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:13:06,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073143577] [2021-08-29 13:13:06,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073143577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:13:06,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:13:06,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:13:06,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107570112] [2021-08-29 13:13:06,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:13:06,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:13:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:13:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:13:06,136 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:13:06,181 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-29 13:13:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:13:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 13:13:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:13:06,188 INFO L225 Difference]: With dead ends: 63 [2021-08-29 13:13:06,188 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 13:13:06,190 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:13:06,192 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.28ms IncrementalHoareTripleChecker+Time [2021-08-29 13:13:06,193 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 34.28ms Time] [2021-08-29 13:13:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 13:13:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 13:13:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-29 13:13:06,214 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-29 13:13:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:13:06,214 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-29 13:13:06,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-29 13:13:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:13:06,215 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:13:06,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:13:06,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:13:06,216 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:13:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:13:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-29 13:13:06,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:13:06,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947157936] [2021-08-29 13:13:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:06,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:13:06,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:13:06,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106257159] [2021-08-29 13:13:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:06,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:13:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:13:06,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:13:06,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:13:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:13:06,297 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:13:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:13:06,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 13:13:06,319 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:13:06,321 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 13:13:06,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 13:13:06,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 13:13:06,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 13:13:06,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 13:13:06,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 13:13:06,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:13:06,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:13:06,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:13:06,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:13:06 BoogieIcfgContainer [2021-08-29 13:13:06,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:13:06,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:13:06,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:13:06,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:13:06,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:05" (3/4) ... [2021-08-29 13:13:06,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 13:13:06,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:13:06,591 INFO L158 Benchmark]: Toolchain (without parser) took 1009.42ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 39.5MB in the beginning and 40.2MB in the end (delta: -615.0kB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-08-29 13:13:06,595 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:13:06,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.45ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 41.7MB in the end (delta: -2.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-08-29 13:13:06,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.43ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 39.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:13:06,596 INFO L158 Benchmark]: Boogie Preprocessor took 13.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:13:06,596 INFO L158 Benchmark]: RCFGBuilder took 143.48ms. Allocated memory is still 58.7MB. Free memory was 38.5MB in the beginning and 29.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:13:06,598 INFO L158 Benchmark]: TraceAbstraction took 637.54ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 29.2MB in the beginning and 40.6MB in the end (delta: -11.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-08-29 13:13:06,598 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 79.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:13:06,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.45ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 41.7MB in the end (delta: -2.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.43ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 39.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 143.48ms. Allocated memory is still 58.7MB. Free memory was 38.5MB in the beginning and 29.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 637.54ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 29.2MB in the beginning and 40.6MB in the end (delta: -11.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 6.02ms. Allocated memory is still 79.7MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 584.80ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.58ms, AutomataDifference: 76.00ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.56ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 34.28ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 26.36ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 33 mSolverCounterSat, 0.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 10.91ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.37ms SsaConstructionTime, 26.55ms SatisfiabilityAnalysisTime, 45.20ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-08-29 13:13:06,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:13:08,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:13:08,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:13:08,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:13:08,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:13:08,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:13:08,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:13:08,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:13:08,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:13:08,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:13:08,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:13:08,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:13:08,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:13:08,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:13:08,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:13:08,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:13:08,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:13:08,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:13:08,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:13:08,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:13:08,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:13:08,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:13:08,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:13:08,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:13:08,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:13:08,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:13:08,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:13:08,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:13:08,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:13:08,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:13:08,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:13:08,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:13:08,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:13:08,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:13:08,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:13:08,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:13:08,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:13:08,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:13:08,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:13:08,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:13:08,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:13:08,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 13:13:08,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:13:08,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:13:08,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:13:08,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:13:08,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:13:08,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:13:08,346 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:13:08,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:13:08,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:13:08,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:13:08,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:13:08,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:13:08,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:13:08,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:13:08,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:13:08,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:13:08,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:13:08,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:13:08,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:13:08,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 13:13:08,351 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 771a0d58841ee32dbcd22255998870d19f409341 [2021-08-29 13:13:08,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:13:08,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:13:08,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:13:08,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:13:08,597 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:13:08,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-08-29 13:13:08,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92978edc9/418a214907f54d9f87477e1140a2628e/FLAG2cb28c450 [2021-08-29 13:13:08,981 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:13:08,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-08-29 13:13:08,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92978edc9/418a214907f54d9f87477e1140a2628e/FLAG2cb28c450 [2021-08-29 13:13:09,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92978edc9/418a214907f54d9f87477e1140a2628e [2021-08-29 13:13:09,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:13:09,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:13:09,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:13:09,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:13:09,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:13:09,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72debabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09, skipping insertion in model container [2021-08-29 13:13:09,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:13:09,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:13:09,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-08-29 13:13:09,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:13:09,122 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:13:09,129 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c[709,722] [2021-08-29 13:13:09,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:13:09,177 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:13:09,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09 WrapperNode [2021-08-29 13:13:09,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:13:09,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:13:09,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:13:09,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:13:09,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:13:09,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:13:09,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:13:09,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:13:09,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:13:09,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:13:09,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:13:09,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:13:09,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (1/1) ... [2021-08-29 13:13:09,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:13:09,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:13:09,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:13:09,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:13:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 13:13:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:13:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:13:09,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:13:09,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:13:09,487 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-29 13:13:09,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:09 BoogieIcfgContainer [2021-08-29 13:13:09,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:13:09,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:13:09,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:13:09,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:13:09,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:13:09" (1/3) ... [2021-08-29 13:13:09,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:13:09, skipping insertion in model container [2021-08-29 13:13:09,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:13:09" (2/3) ... [2021-08-29 13:13:09,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d815036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:13:09, skipping insertion in model container [2021-08-29 13:13:09,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:09" (3/3) ... [2021-08-29 13:13:09,498 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-08-29 13:13:09,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:13:09,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 13:13:09,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:13:09,544 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:13:09,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 13:13:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:13:09,561 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:13:09,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:13:09,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:13:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:13:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-29 13:13:09,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:13:09,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581432712] [2021-08-29 13:13:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:09,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:13:09,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:13:09,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:13:09,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 13:13:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:13:09,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 13:13:09,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:13:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:09,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:13:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:09,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:13:09,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581432712] [2021-08-29 13:13:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581432712] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:13:09,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:13:09,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 13:13:09,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791735973] [2021-08-29 13:13:09,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:13:09,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:13:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:13:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:13:09,883 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:12,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:14,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:16,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:19,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:21,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:13:22,185 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-29 13:13:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:13:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 13:13:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:13:22,194 INFO L225 Difference]: With dead ends: 63 [2021-08-29 13:13:22,195 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 13:13:22,202 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:13:22,204 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11863.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12281.14ms IncrementalHoareTripleChecker+Time [2021-08-29 13:13:22,209 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 12281.14ms Time] [2021-08-29 13:13:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 13:13:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 13:13:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-29 13:13:22,234 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-29 13:13:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:13:22,234 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-29 13:13:22,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-29 13:13:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:13:22,235 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:13:22,235 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:13:22,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-29 13:13:22,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:13:22,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:13:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:13:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-29 13:13:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:13:22,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311330903] [2021-08-29 13:13:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:22,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:13:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:13:22,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:13:22,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 13:13:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:13:22,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 13:13:22,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:13:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:22,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:13:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:27,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:13:27,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311330903] [2021-08-29 13:13:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311330903] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:13:27,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:13:27,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-29 13:13:27,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589189856] [2021-08-29 13:13:27,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 13:13:27,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:13:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 13:13:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:13:27,393 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:29,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:32,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:36,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:40,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:48,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:53,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:13:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:13:54,476 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-08-29 13:13:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:13:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 13:13:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:13:54,478 INFO L225 Difference]: With dead ends: 34 [2021-08-29 13:13:54,478 INFO L226 Difference]: Without dead ends: 32 [2021-08-29 13:13:54,479 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4240.94ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 13:13:54,479 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26021.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26962.06ms IncrementalHoareTripleChecker+Time [2021-08-29 13:13:54,479 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 5 Unknown, 0 Unchecked, 26962.06ms Time] [2021-08-29 13:13:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-29 13:13:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-29 13:13:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-29 13:13:54,483 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-08-29 13:13:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:13:54,483 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-29 13:13:54,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:13:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-29 13:13:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:13:54,484 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:13:54,484 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:13:54,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:13:54,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:13:54,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:13:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:13:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-29 13:13:54,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:13:54,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103205340] [2021-08-29 13:13:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:13:54,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:13:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:13:54,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:13:54,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 13:13:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:13:55,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 13:13:55,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:13:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:13:57,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:14:03,844 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 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)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-08-29 13:14:05,882 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 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)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-08-29 13:14:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:14:30,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:14:30,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103205340] [2021-08-29 13:14:30,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103205340] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:14:30,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:14:30,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-29 13:14:30,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489552995] [2021-08-29 13:14:30,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 13:14:30,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:14:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 13:14:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-08-29 13:14:30,691 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:14:35,041 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse0) (not .cse1))) (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0)) .cse1 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) .cse0 (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-08-29 13:14:37,584 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 13:14:40,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:41,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:43,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:45,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:48,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:50,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:51,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:54,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:14:57,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:15:01,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:15:03,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:15:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:03,206 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-29 13:15:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 13:15:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 13:15:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:03,211 INFO L225 Difference]: With dead ends: 36 [2021-08-29 13:15:03,211 INFO L226 Difference]: Without dead ends: 34 [2021-08-29 13:15:03,211 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 23928.09ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-08-29 13:15:03,212 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26043.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 27070.45ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:03,212 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 5 Unknown, 25 Unchecked, 27070.45ms Time] [2021-08-29 13:15:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-29 13:15:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-08-29 13:15:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-08-29 13:15:03,216 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-08-29 13:15:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:03,216 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-08-29 13:15:03,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:15:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-08-29 13:15:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 13:15:03,224 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:03,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:03,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-29 13:15:03,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:15:03,433 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:15:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:03,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-29 13:15:03,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:15:03,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057148554] [2021-08-29 13:15:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:03,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:15:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:15:03,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:15:03,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 13:15:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:15:52,098 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:15:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:15:54,374 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 13:15:54,374 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:15:54,375 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 13:15:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 13:15:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 13:15:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 13:15:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 13:15:54,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 13:15:54,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 13:15:54,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:15:54,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:15:54,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:15:54 BoogieIcfgContainer [2021-08-29 13:15:54,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:15:54,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:15:54,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:15:54,605 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:15:54,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:13:09" (3/4) ... [2021-08-29 13:15:54,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 13:15:54,642 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:15:54,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:15:54,643 INFO L158 Benchmark]: Toolchain (without parser) took 165638.10ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 32.3MB in the end (delta: 19.2MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2021-08-29 13:15:54,643 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:54,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.87ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 59.4MB in the end (delta: -8.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 13:15:54,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.24ms. Allocated memory is still 75.5MB. Free memory was 59.4MB in the beginning and 57.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:54,646 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:54,646 INFO L158 Benchmark]: RCFGBuilder took 227.82ms. Allocated memory is still 75.5MB. Free memory was 56.2MB in the beginning and 46.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 13:15:54,646 INFO L158 Benchmark]: TraceAbstraction took 165112.37ms. Allocated memory is still 75.5MB. Free memory was 45.5MB in the beginning and 34.4MB in the end (delta: 11.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-08-29 13:15:54,647 INFO L158 Benchmark]: Witness Printer took 38.54ms. Allocated memory is still 75.5MB. Free memory was 34.4MB in the beginning and 32.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:15:54,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.87ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 59.4MB in the end (delta: -8.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.24ms. Allocated memory is still 75.5MB. Free memory was 59.4MB in the beginning and 57.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 227.82ms. Allocated memory is still 75.5MB. Free memory was 56.2MB in the beginning and 46.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 165112.37ms. Allocated memory is still 75.5MB. Free memory was 45.5MB in the beginning and 34.4MB in the end (delta: 11.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Witness Printer took 38.54ms. Allocated memory is still 75.5MB. Free memory was 34.4MB in the beginning and 32.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 165043.72ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 18.51ms, AutomataDifference: 71954.36ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.27ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 66313.66ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 63929.30ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 244 mSolverCounterSat, 6.42ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 28169.07ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 20.09ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.95ms SsaConstructionTime, 49317.03ms SatisfiabilityAnalysisTime, 40413.35ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 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 incorrect! [2021-08-29 13:15:54,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...