./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_unwindbound20.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 b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a ...................................................................................................................................................................................................................................................................................................................... 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_unwindbound20.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 b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-dev-20ed64e [2021-08-26 06:22:20,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:22:20,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:22:20,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:22:20,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:22:20,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:22:20,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:22:20,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:22:20,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:22:20,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:22:20,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:22:20,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:22:20,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:22:20,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:22:20,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:22:20,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:22:20,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:22:20,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:22:20,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:22:20,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:22:20,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:22:20,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:22:20,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:22:20,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:22:20,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:22:20,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:22:20,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:22:20,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:22:20,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:22:20,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:22:20,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:22:20,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:22:20,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:22:20,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:22:20,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:22:20,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:22:20,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:22:20,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:22:20,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:22:20,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:22:20,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:22:20,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:22:20,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:22:20,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:22:20,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:22:20,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:22:20,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:22:20,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:22:20,779 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:22:20,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:22:20,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:22:20,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:22:20,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:22:20,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:22:20,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:22:20,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:22:20,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:22:20,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:22:20,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a [2021-08-26 06:22:21,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:22:21,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:22:21,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:22:21,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:22:21,035 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:22:21,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-08-26 06:22:21,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bfbc6d/8aaf4e3035574d268971298d8ea071b9/FLAGa0cbec65d [2021-08-26 06:22:21,491 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:22:21,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-08-26 06:22:21,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bfbc6d/8aaf4e3035574d268971298d8ea071b9/FLAGa0cbec65d [2021-08-26 06:22:21,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bfbc6d/8aaf4e3035574d268971298d8ea071b9 [2021-08-26 06:22:21,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:22:21,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:22:21,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:22:21,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:22:21,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:22:21,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c98cbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21, skipping insertion in model container [2021-08-26 06:22:21,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:22:21,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:22:21,609 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_unwindbound20.c[709,722] [2021-08-26 06:22:21,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:22:21,632 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:22:21,639 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_unwindbound20.c[709,722] [2021-08-26 06:22:21,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:22:21,664 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:22:21,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21 WrapperNode [2021-08-26 06:22:21,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:22:21,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:22:21,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:22:21,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:22:21,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:22:21,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:22:21,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:22:21,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:22:21,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:22:21,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:22:21,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:22:21,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:22:21,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (1/1) ... [2021-08-26 06:22:21,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:22:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:22:21,750 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) [2021-08-26 06:22:21,775 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 [2021-08-26 06:22:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:22:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:22:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:22:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:22:22,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:22:22,070 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-26 06:22:22,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:22 BoogieIcfgContainer [2021-08-26 06:22:22,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:22:22,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:22:22,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:22:22,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:22:22,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:22:21" (1/3) ... [2021-08-26 06:22:22,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547202e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:22:22, skipping insertion in model container [2021-08-26 06:22:22,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:21" (2/3) ... [2021-08-26 06:22:22,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547202e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:22:22, skipping insertion in model container [2021-08-26 06:22:22,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:22" (3/3) ... [2021-08-26 06:22:22,077 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound20.c [2021-08-26 06:22:22,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:22:22,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:22:22,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:22:22,110 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 [2021-08-26 06:22:22,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:22:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-08-26 06:22:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:22:22,121 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:22:22,122 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:22:22,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:22:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:22:22,126 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-08-26 06:22:22,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:22:22,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582936798] [2021-08-26 06:22:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:22:22,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:22:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:22:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:22:22,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:22:22,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582936798] [2021-08-26 06:22:22,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582936798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:22:22,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:22:22,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:22:22,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884291155] [2021-08-26 06:22:22,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:22:22,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:22:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:22:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:22:22,233 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 06:22:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:22:22,243 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-08-26 06:22:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:22:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-08-26 06:22:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:22:22,249 INFO L225 Difference]: With dead ends: 62 [2021-08-26 06:22:22,249 INFO L226 Difference]: Without dead ends: 28 [2021-08-26 06:22:22,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:22:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-26 06:22:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-26 06:22:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 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) [2021-08-26 06:22:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-26 06:22:22,269 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-08-26 06:22:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:22:22,270 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-26 06:22:22,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 06:22:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-26 06:22:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:22:22,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:22:22,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:22:22,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:22:22,271 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)] === [2021-08-26 06:22:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:22:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-26 06:22:22,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:22:22,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006212090] [2021-08-26 06:22:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:22:22,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:22:22,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:22:22,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603986606] [2021-08-26 06:22:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:22:22,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:22:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:22:22,295 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) [2021-08-26 06:22:22,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 06:22:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:22:22,355 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:22:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:22:22,390 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:22:22,391 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:22:22,392 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:22:22,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:22:22,617 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 [2021-08-26 06:22:22,621 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:22:22,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:22:22 BoogieIcfgContainer [2021-08-26 06:22:22,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:22:22,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:22:22,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:22:22,641 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:22:22,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:22" (3/4) ... [2021-08-26 06:22:22,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 06:22:22,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:22:22,648 INFO L168 Benchmark]: Toolchain (without parser) took 1138.07 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 46.1 MB in the beginning and 53.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:22:22,648 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:22:22,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.84 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 35.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:22:22,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 65.0 MB. Free memory was 35.3 MB in the beginning and 33.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:22:22,649 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 65.0 MB. Free memory was 33.7 MB in the beginning and 32.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:22:22,649 INFO L168 Benchmark]: RCFGBuilder took 341.26 ms. Allocated memory is still 65.0 MB. Free memory was 32.4 MB in the beginning and 38.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:22:22,650 INFO L168 Benchmark]: TraceAbstraction took 565.65 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 38.3 MB in the beginning and 53.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:22:22,651 INFO L168 Benchmark]: Witness Printer took 6.19 ms. Allocated memory is still 90.2 MB. Free memory was 53.8 MB in the beginning and 53.4 MB in the end (delta: 394.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:22:22,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 155.84 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 35.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 65.0 MB. Free memory was 35.3 MB in the beginning and 33.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 65.0 MB. Free memory was 33.7 MB in the beginning and 32.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 341.26 ms. Allocated memory is still 65.0 MB. Free memory was 32.4 MB in the beginning and 38.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 565.65 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 38.3 MB in the beginning and 53.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.19 ms. Allocated memory is still 90.2 MB. Free memory was 53.8 MB in the beginning and 53.4 MB in the end (delta: 394.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 516.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 25.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.9ms SsaConstructionTime, 32.8ms SatisfiabilityAnalysisTime, 33.8ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-08-26 06:22:22,686 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-dev-20ed64e [2021-08-26 06:22:24,106 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 06:22:24,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:22:24,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:22:24,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:22:24,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:22:24,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:22:24,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:22:24,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:22:24,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:22:24,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:22:24,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:22:24,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:22:24,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 06:22:24,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:22:24,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:22:24,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:22:24,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:22:24,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:22:24,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:22:24,212 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:22:24,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:22:24,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:22:24,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 06:22:24,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:22:24,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:22:24,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:22:24,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:22:24,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:22:24,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:22:24,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:22:24,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:22:24,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:22:24,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:22:24,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 06:22:24,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a [2021-08-26 06:22:24,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:22:24,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:22:24,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:22:24,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:22:24,457 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:22:24,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-08-26 06:22:24,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb7e3439/db61e512f4074b7caea7582a968b97fe/FLAGbd3504a0e [2021-08-26 06:22:24,846 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:22:24,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-08-26 06:22:24,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb7e3439/db61e512f4074b7caea7582a968b97fe/FLAGbd3504a0e [2021-08-26 06:22:25,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adb7e3439/db61e512f4074b7caea7582a968b97fe [2021-08-26 06:22:25,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:22:25,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:22:25,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:22:25,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:22:25,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:22:25,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c98cbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25, skipping insertion in model container [2021-08-26 06:22:25,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:22:25,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:22:25,388 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_unwindbound20.c[709,722] [2021-08-26 06:22:25,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:22:25,408 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:22:25,415 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_unwindbound20.c[709,722] [2021-08-26 06:22:25,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:22:25,469 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:22:25,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25 WrapperNode [2021-08-26 06:22:25,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:22:25,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:22:25,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:22:25,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:22:25,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:22:25,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:22:25,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:22:25,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:22:25,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:22:25,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:22:25,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:22:25,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:22:25,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (1/1) ... [2021-08-26 06:22:25,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:22:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:22:25,569 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) [2021-08-26 06:22:25,594 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 [2021-08-26 06:22:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 06:22:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:22:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:22:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:22:34,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:22:34,785 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-26 06:22:34,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:34 BoogieIcfgContainer [2021-08-26 06:22:34,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:22:34,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:22:34,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:22:34,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:22:34,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:22:25" (1/3) ... [2021-08-26 06:22:34,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d452c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:22:34, skipping insertion in model container [2021-08-26 06:22:34,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:22:25" (2/3) ... [2021-08-26 06:22:34,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d452c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:22:34, skipping insertion in model container [2021-08-26 06:22:34,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:34" (3/3) ... [2021-08-26 06:22:34,792 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound20.c [2021-08-26 06:22:34,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:22:34,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 06:22:34,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:22:34,827 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 [2021-08-26 06:22:34,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 06:22:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-08-26 06:22:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:22:34,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:22:34,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:22:34,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:22:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:22:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-08-26 06:22:34,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:22:34,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892641180] [2021-08-26 06:22:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:22:34,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:22:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:22:34,859 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) [2021-08-26 06:22:34,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 06:22:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:22:34,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 06:22:34,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:22:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:22:35,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:22:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:22:35,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:22:35,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892641180] [2021-08-26 06:22:35,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892641180] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:22:35,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:22:35,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 06:22:35,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304185463] [2021-08-26 06:22:35,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:22:35,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:22:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:22:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:22:35,080 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 06:22:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:22:35,091 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-08-26 06:22:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:22:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-08-26 06:22:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:22:35,097 INFO L225 Difference]: With dead ends: 62 [2021-08-26 06:22:35,098 INFO L226 Difference]: Without dead ends: 28 [2021-08-26 06:22:35,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:22:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-26 06:22:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-26 06:22:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 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) [2021-08-26 06:22:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-26 06:22:35,121 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-08-26 06:22:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:22:35,121 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-26 06:22:35,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 06:22:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-26 06:22:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:22:35,122 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:22:35,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:22:35,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:22:35,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:22:35,328 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)] === [2021-08-26 06:22:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:22:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-26 06:22:35,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:22:35,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426168259] [2021-08-26 06:22:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:22:35,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:22:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:22:35,330 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) [2021-08-26 06:22:35,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 06:22:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:22:35,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 06:22:35,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:22:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:22:35,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:22:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:22:43,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:22:43,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426168259] [2021-08-26 06:22:43,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426168259] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:22:43,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:22:43,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-26 06:22:43,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232520073] [2021-08-26 06:22:43,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:22:43,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:22:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:22:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:22:43,230 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-26 06:23:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:23:02,735 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-26 06:23:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:23:02,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 6 [2021-08-26 06:23:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:23:02,737 INFO L225 Difference]: With dead ends: 39 [2021-08-26 06:23:02,737 INFO L226 Difference]: Without dead ends: 35 [2021-08-26 06:23:02,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3935.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:23:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-26 06:23:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-08-26 06:23:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-08-26 06:23:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-26 06:23:02,741 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-08-26 06:23:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:23:02,742 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-26 06:23:02,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-26 06:23:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-26 06:23:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 06:23:02,742 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:23:02,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:23:02,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:23:02,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:23:02,944 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)] === [2021-08-26 06:23:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:23:02,945 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-08-26 06:23:02,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:23:02,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025651609] [2021-08-26 06:23:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:23:02,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:23:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:23:02,949 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) [2021-08-26 06:23:02,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 06:23:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:23:03,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 06:23:03,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:23:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:23:05,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:23:11,867 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 [2021-08-26 06:23:13,910 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 [2021-08-26 06:23:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:23:34,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:23:34,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025651609] [2021-08-26 06:23:34,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025651609] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:23:34,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:23:34,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-08-26 06:23:34,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322185527] [2021-08-26 06:23:34,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 06:23:34,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:23:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 06:23:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-08-26 06:23:34,254 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-08-26 06:23:46,764 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ 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) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-08-26 06:23:49,547 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ 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 [2021-08-26 06:24:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:24:43,704 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-08-26 06:24:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:24:43,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 8 [2021-08-26 06:24:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:24:43,705 INFO L225 Difference]: With dead ends: 36 [2021-08-26 06:24:43,705 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 06:24:43,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25710.8ms TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2021-08-26 06:24:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 06:24:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-08-26 06:24:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 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) [2021-08-26 06:24:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-08-26 06:24:43,709 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-08-26 06:24:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:24:43,709 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-08-26 06:24:43,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-08-26 06:24:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-08-26 06:24:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:24:43,710 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:24:43,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:24:43,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 06:24:43,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:24:43,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:24:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:24:43,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-08-26 06:24:43,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:24:43,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105723372] [2021-08-26 06:24:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:24:43,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:24:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:24:43,925 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) [2021-08-26 06:24:43,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 06:24:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:24:44,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 06:24:44,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:24:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:24:44,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 06:24:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:24:44,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 06:24:44,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105723372] [2021-08-26 06:24:44,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105723372] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 06:24:44,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:24:44,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-26 06:24:44,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013925241] [2021-08-26 06:24:44,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 06:24:44,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 06:24:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 06:24:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:24:44,547 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2021-08-26 06:24:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:24:45,630 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-08-26 06:24:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:24:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 9 [2021-08-26 06:24:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:24:45,631 INFO L225 Difference]: With dead ends: 64 [2021-08-26 06:24:45,631 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 06:24:45,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 217.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:24:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 06:24:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-08-26 06:24:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 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) [2021-08-26 06:24:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-08-26 06:24:45,637 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-08-26 06:24:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:24:45,637 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-08-26 06:24:45,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2021-08-26 06:24:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-08-26 06:24:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 06:24:45,637 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:24:45,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:24:45,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 06:24:45,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:24:45,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 06:24:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:24:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-08-26 06:24:45,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 06:24:45,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334773581] [2021-08-26 06:24:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:24:45,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 06:24:45,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 06:24:45,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 06:24:45,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-26 06:24:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:24:47,077 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:24:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:24:48,911 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 06:24:48,912 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:24:48,912 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:24:48,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-26 06:24:49,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 06:24:49,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:24:49,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:24:49 BoogieIcfgContainer [2021-08-26 06:24:49,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:24:49,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:24:49,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:24:49,134 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:24:49,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:22:34" (3/4) ... [2021-08-26 06:24:49,135 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:24:49,162 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:24:49,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:24:49,163 INFO L168 Benchmark]: Toolchain (without parser) took 143873.20 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 33.2 MB in the beginning and 26.3 MB in the end (delta: 6.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,163 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:24:49,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.84 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 33.0 MB in the beginning and 59.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 57.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:24:49,164 INFO L168 Benchmark]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 55.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,165 INFO L168 Benchmark]: RCFGBuilder took 9240.50 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 39.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,165 INFO L168 Benchmark]: TraceAbstraction took 134345.46 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 28.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,165 INFO L168 Benchmark]: Witness Printer took 28.71 ms. Allocated memory is still 75.5 MB. Free memory was 28.4 MB in the beginning and 26.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:24:49,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 180.84 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 33.0 MB in the beginning and 59.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 57.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.71 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 55.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9240.50 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 39.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 134345.46 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 28.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 28.71 ms. Allocated memory is still 75.5 MB. Free memory was 28.4 MB in the beginning and 26.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 134296.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 90076.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 104 SDtfs, 68 SDslu, 171 SDs, 0 SdLazy, 111 SolverSat, 21 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 73996.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 29864.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.2ms SsaConstructionTime, 2500.6ms SatisfiabilityAnalysisTime, 38572.2ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-08-26 06:24:49,384 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-26 06:24:49,414 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 137 Received shutdown request...