./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.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 514e626768732b278bbbbc5302dd7dcabf3292bc ........................................................................................................................................................................................................................................................................................................................ 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_unwindbound10.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 514e626768732b278bbbbc5302dd7dcabf3292bc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:06:55,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:06:55,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:06:55,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:06:55,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:06:55,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:06:55,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:06:55,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:06:55,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:06:55,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:06:55,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:06:55,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:06:55,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:06:55,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:06:55,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:06:55,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:06:55,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:06:55,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:06:55,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:06:55,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:06:55,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:06:55,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:06:55,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:06:55,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:06:55,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:06:55,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:06:55,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:06:55,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:06:55,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:06:55,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:06:55,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:06:55,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:06:55,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:06:55,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:06:55,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:06:55,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:06:55,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:06:55,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:06:55,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:06:55,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:06:55,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:06:55,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:06:55,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:06:55,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:06:55,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:06:55,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:06:55,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:06:55,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:06:55,620 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:06:55,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:06:55,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:06:55,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:06:55,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:06:55,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:06:55,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:06:55,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:06:55,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:06:55,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:06:55,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:06:55,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:06:55,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:06:55,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:06:55,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:06:55,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:06:55,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:06:55,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:06:55,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2021-08-29 13:06:55,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:06:55,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:06:55,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:06:55,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:06:55,849 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:06:55,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-08-29 13:06:55,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d876fbc3/38c0b8a7e39d4e56998cc3e6c9555a29/FLAG7b9cda67e [2021-08-29 13:06:56,266 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:06:56,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-08-29 13:06:56,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d876fbc3/38c0b8a7e39d4e56998cc3e6c9555a29/FLAG7b9cda67e [2021-08-29 13:06:56,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d876fbc3/38c0b8a7e39d4e56998cc3e6c9555a29 [2021-08-29 13:06:56,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:06:56,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:06:56,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:06:56,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:06:56,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:06:56,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f4a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56, skipping insertion in model container [2021-08-29 13:06:56,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:06:56,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:06:56,422 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_unwindbound10.c[709,722] [2021-08-29 13:06:56,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:06:56,459 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:06:56,469 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_unwindbound10.c[709,722] [2021-08-29 13:06:56,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:06:56,536 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:06:56,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56 WrapperNode [2021-08-29 13:06:56,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:06:56,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:06:56,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:06:56,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:06:56,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:06:56,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:06:56,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:06:56,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:06:56,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:06:56,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:06:56,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:06:56,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:06:56,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (1/1) ... [2021-08-29 13:06:56,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:06:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:06:56,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:06:56,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:06:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:06:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:06:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:06:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:06:56,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:06:56,837 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-29 13:06:56,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:06:56 BoogieIcfgContainer [2021-08-29 13:06:56,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:06:56,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:06:56,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:06:56,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:06:56,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:06:56" (1/3) ... [2021-08-29 13:06:56,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69709efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:06:56, skipping insertion in model container [2021-08-29 13:06:56,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:06:56" (2/3) ... [2021-08-29 13:06:56,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69709efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:06:56, skipping insertion in model container [2021-08-29 13:06:56,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:06:56" (3/3) ... [2021-08-29 13:06:56,845 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-08-29 13:06:56,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:06:56,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 13:06:56,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:06:56,896 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:06:56,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 13:06:56,907 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) [2021-08-29 13:06:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 13:06:56,911 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:06:56,912 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 13:06:56,915 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)] === [2021-08-29 13:06:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:06:56,918 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-08-29 13:06:56,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:06:56,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905455794] [2021-08-29 13:06:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:06:56,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:06:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:06:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:06:57,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:06:57,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905455794] [2021-08-29 13:06:57,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905455794] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:06:57,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:06:57,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:06:57,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570788967] [2021-08-29 13:06:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:06:57,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:06:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:06:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:06:57,095 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) [2021-08-29 13:06:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:06:57,163 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-08-29 13:06:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:06:57,165 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 [2021-08-29 13:06:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:06:57,169 INFO L225 Difference]: With dead ends: 62 [2021-08-29 13:06:57,169 INFO L226 Difference]: Without dead ends: 28 [2021-08-29 13:06:57,171 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:06:57,173 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.86ms IncrementalHoareTripleChecker+Time [2021-08-29 13:06:57,174 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.27ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 56.86ms Time] [2021-08-29 13:06:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-29 13:06:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-29 13:06:57,203 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) [2021-08-29 13:06:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-29 13:06:57,206 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-08-29 13:06:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:06:57,206 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-29 13:06:57,207 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) [2021-08-29 13:06:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-29 13:06:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 13:06:57,207 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:06:57,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 13:06:57,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:06:57,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:06:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:06:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-29 13:06:57,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:06:57,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328023920] [2021-08-29 13:06:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:06:57,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:06:57,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:06:57,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212414545] [2021-08-29 13:06:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:06:57,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:06:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:06:57,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:06:57,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:06:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:06:57,284 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:06:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:06:57,310 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 13:06:57,311 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:06:57,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 13:06:57,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 13:06:57,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 13:06:57,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 13:06:57,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 13:06:57,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 13:06:57,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:06:57,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:06:57,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:06:57,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:06:57 BoogieIcfgContainer [2021-08-29 13:06:57,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:06:57,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:06:57,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:06:57,544 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:06:57,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:06:56" (3/4) ... [2021-08-29 13:06:57,546 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 13:06:57,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:06:57,549 INFO L158 Benchmark]: Toolchain (without parser) took 1258.61ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 44.9MB in the beginning and 61.9MB in the end (delta: -17.0MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-08-29 13:06:57,550 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:06:57,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.23ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 47.5MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 13:06:57,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.19ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 45.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:06:57,552 INFO L158 Benchmark]: Boogie Preprocessor took 30.50ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 44.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:06:57,553 INFO L158 Benchmark]: RCFGBuilder took 230.78ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 35.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 13:06:57,553 INFO L158 Benchmark]: TraceAbstraction took 702.34ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.2MB in the beginning and 62.4MB in the end (delta: -27.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-08-29 13:06:57,553 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:06:57,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.9MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.23ms. Allocated memory is still 65.0MB. Free memory was 44.6MB in the beginning and 47.5MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.19ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 45.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.50ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 44.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.78ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 35.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 702.34ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.2MB in the beginning and 62.4MB in the end (delta: -27.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. 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++<10 [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: 635.28ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.74ms, AutomataDifference: 101.03ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.86ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 56.86ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 48.90ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 33 mSolverCounterSat, 0.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.73ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.86ms SsaConstructionTime, 36.34ms SatisfiabilityAnalysisTime, 66.20ms 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 [2021-08-29 13:06:57,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:06:59,053 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 13:06:59,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:06:59,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:06:59,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:06:59,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:06:59,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:06:59,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:06:59,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:06:59,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:06:59,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:06:59,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:06:59,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:06:59,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:06:59,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:06:59,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:06:59,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:06:59,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:06:59,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:06:59,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:06:59,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:06:59,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:06:59,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:06:59,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:06:59,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:06:59,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:06:59,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:06:59,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:06:59,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:06:59,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:06:59,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:06:59,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 13:06:59,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:06:59,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:06:59,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:06:59,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:06:59,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:06:59,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:06:59,164 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:06:59,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:06:59,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:06:59,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:06:59,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:06:59,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 13:06:59,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:06:59,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:06:59,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 13:06:59,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2021-08-29 13:06:59,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:06:59,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:06:59,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:06:59,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:06:59,400 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:06:59,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-08-29 13:06:59,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f42f67d/289be39dcf28498c9cdafa10612c73a5/FLAG59db17341 [2021-08-29 13:06:59,811 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:06:59,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-08-29 13:06:59,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f42f67d/289be39dcf28498c9cdafa10612c73a5/FLAG59db17341 [2021-08-29 13:07:00,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5f42f67d/289be39dcf28498c9cdafa10612c73a5 [2021-08-29 13:07:00,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:07:00,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:07:00,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:07:00,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:07:00,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:07:00,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee03d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00, skipping insertion in model container [2021-08-29 13:07:00,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:07:00,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:07:00,337 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_unwindbound10.c[709,722] [2021-08-29 13:07:00,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:07:00,382 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:07:00,420 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_unwindbound10.c[709,722] [2021-08-29 13:07:00,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:07:00,456 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:07:00,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00 WrapperNode [2021-08-29 13:07:00,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:07:00,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:07:00,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:07:00,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:07:00,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:07:00,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:07:00,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:07:00,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:07:00,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:07:00,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:07:00,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:07:00,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:07:00,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (1/1) ... [2021-08-29 13:07:00,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:07:00,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:07:00,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:07:00,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:07:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 13:07:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:07:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:07:00,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:07:00,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:07:00,826 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-29 13:07:00,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:07:00 BoogieIcfgContainer [2021-08-29 13:07:00,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:07:00,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:07:00,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:07:00,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:07:00,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:07:00" (1/3) ... [2021-08-29 13:07:00,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3576a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:07:00, skipping insertion in model container [2021-08-29 13:07:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:07:00" (2/3) ... [2021-08-29 13:07:00,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a3576a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:07:00, skipping insertion in model container [2021-08-29 13:07:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:07:00" (3/3) ... [2021-08-29 13:07:00,834 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-08-29 13:07:00,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:07:00,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 13:07:00,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:07:00,885 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:07:00,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 13:07:00,895 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) [2021-08-29 13:07:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 13:07:00,906 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:07:00,906 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 13:07:00,907 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)] === [2021-08-29 13:07:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:07:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-08-29 13:07:00,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:07:00,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394067566] [2021-08-29 13:07:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:07:00,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:07:00,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:07:00,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:07:00,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 13:07:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:07:01,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 13:07:01,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:07:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:07:01,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:07:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:07:01,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:07:01,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394067566] [2021-08-29 13:07:01,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394067566] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:07:01,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:07:01,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 13:07:01,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850887042] [2021-08-29 13:07:01,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:07:01,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:07:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:07:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:07:01,145 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) [2021-08-29 13:07:03,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:05,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:08,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:10,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:11,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:07:11,825 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-08-29 13:07:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:07:11,835 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 [2021-08-29 13:07:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:07:11,839 INFO L225 Difference]: With dead ends: 62 [2021-08-29 13:07:11,839 INFO L226 Difference]: Without dead ends: 28 [2021-08-29 13:07:11,841 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:07:11,845 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10302.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10661.38ms IncrementalHoareTripleChecker+Time [2021-08-29 13:07:11,848 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 10661.38ms Time] [2021-08-29 13:07:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-29 13:07:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-29 13:07:11,866 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) [2021-08-29 13:07:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-29 13:07:11,867 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-08-29 13:07:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:07:11,868 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-29 13:07:11,868 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) [2021-08-29 13:07:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-29 13:07:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 13:07:11,868 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:07:11,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 13:07:11,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:07:12,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:07:12,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:07:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:07:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-29 13:07:12,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:07:12,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164106515] [2021-08-29 13:07:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:07:12,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:07:12,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:07:12,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:07:12,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 13:07:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:07:12,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 13:07:12,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:07:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:07:12,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:07:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:07:19,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:07:19,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164106515] [2021-08-29 13:07:19,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164106515] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:07:19,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:07:19,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-29 13:07:19,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567192717] [2021-08-29 13:07:19,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 13:07:19,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:07:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 13:07:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:07:19,107 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) [2021-08-29 13:07:22,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:24,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:29,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:31,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:36,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:07:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:07:45,328 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-08-29 13:07:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:07:45,347 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 [2021-08-29 13:07:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:07:45,347 INFO L225 Difference]: With dead ends: 39 [2021-08-29 13:07:45,348 INFO L226 Difference]: Without dead ends: 35 [2021-08-29 13:07:45,348 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5210.12ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 13:07:45,349 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25213.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26105.48ms IncrementalHoareTripleChecker+Time [2021-08-29 13:07:45,349 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 4 Unknown, 0 Unchecked, 26105.48ms Time] [2021-08-29 13:07:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-29 13:07:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-08-29 13:07:45,353 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) [2021-08-29 13:07:45,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-29 13:07:45,354 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-08-29 13:07:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:07:45,354 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-29 13:07:45,354 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) [2021-08-29 13:07:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-29 13:07:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 13:07:45,354 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:07:45,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:07:45,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:07:45,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:07:45,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 13:07:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:07:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-08-29 13:07:45,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:07:45,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337899264] [2021-08-29 13:07:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:07:45,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:07:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:07:45,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:07:45,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 13:07:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:07:46,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 13:07:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:07:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:07:48,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:07:53,454 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-08-29 13:07:55,494 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-08-29 13:08:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:08:15,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:08:15,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337899264] [2021-08-29 13:08:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337899264] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:08:15,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:08:15,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-08-29 13:08:15,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494718841] [2021-08-29 13:08:15,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 13:08:15,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:08:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 13:08:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-08-29 13:08:15,518 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) [2021-08-29 13:08:25,992 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-08-29 13:08:27,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:30,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:32,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:35,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:37,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:08:38,782 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-08-29 13:08:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 13:08:38,783 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 [2021-08-29 13:08:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:08:38,783 INFO L225 Difference]: With dead ends: 38 [2021-08-29 13:08:38,783 INFO L226 Difference]: Without dead ends: 35 [2021-08-29 13:08:38,784 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 23219.23ms TimeCoverageRelationStatistics Valid=24, Invalid=53, Unknown=3, NotChecked=30, Total=110 [2021-08-29 13:08:38,784 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11432.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 11863.23ms IncrementalHoareTripleChecker+Time [2021-08-29 13:08:38,785 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 4 Unknown, 43 Unchecked, 11863.23ms Time] [2021-08-29 13:08:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-29 13:08:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-08-29 13:08:38,788 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) [2021-08-29 13:08:38,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-08-29 13:08:38,789 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-08-29 13:08:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:08:38,789 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-08-29 13:08:38,789 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) [2021-08-29 13:08:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-08-29 13:08:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:08:38,790 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:08:38,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:08:38,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-29 13:08:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:08:38,998 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)] === [2021-08-29 13:08:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:08:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-08-29 13:08:38,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:08:38,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448819257] [2021-08-29 13:08:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:08:38,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:08:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:08:39,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 13:08:39,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 13:08:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:08:39,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 13:08:39,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:08:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:08:39,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:08:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:08:39,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 13:08:39,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448819257] [2021-08-29 13:08:39,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448819257] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 13:08:39,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:08:39,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-29 13:08:39,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245419998] [2021-08-29 13:08:39,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 13:08:39,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 13:08:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 13:08:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:08:39,584 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) [2021-08-29 13:08:42,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:44,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:47,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:50,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:53,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:08:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:08:53,246 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-29 13:08:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:08:53,246 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 [2021-08-29 13:08:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:08:53,247 INFO L225 Difference]: With dead ends: 40 [2021-08-29 13:08:53,247 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 13:08:53,247 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 210.20ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:08:53,248 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13111.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13593.14ms IncrementalHoareTripleChecker+Time [2021-08-29 13:08:53,248 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 13593.14ms Time] [2021-08-29 13:08:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 13:08:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-08-29 13:08:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:08:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-29 13:08:53,251 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2021-08-29 13:08:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:08:53,251 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-29 13:08:53,251 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) [2021-08-29 13:08:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-29 13:08:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:08:53,252 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:08:53,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:08:53,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 13:08:53,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:08:53,457 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)] === [2021-08-29 13:08:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:08:53,458 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-08-29 13:08:53,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 13:08:53,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961625484] [2021-08-29 13:08:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:08:53,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 13:08:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 13:08:53,459 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) [2021-08-29 13:08:53,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-29 13:08:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:08:54,641 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:08:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:08:55,926 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 13:08:55,926 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:08:55,926 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 13:08:55,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 13:08:55,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 13:08:55,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 13:08:55,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 13:08:55,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 13:08:55,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-29 13:08:56,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 13:08:56,133 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:08:56,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:08:56 BoogieIcfgContainer [2021-08-29 13:08:56,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:08:56,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:08:56,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:08:56,154 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:08:56,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:07:00" (3/4) ... [2021-08-29 13:08:56,156 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 13:08:56,191 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:08:56,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:08:56,192 INFO L158 Benchmark]: Toolchain (without parser) took 115948.83ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 53.9MB in the beginning and 51.2MB in the end (delta: 2.7MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,192 INFO L158 Benchmark]: CDTParser took 1.25ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:08:56,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.80ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 108.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.09ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 51.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:08:56,192 INFO L158 Benchmark]: Boogie Preprocessor took 49.44ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 50.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,193 INFO L158 Benchmark]: RCFGBuilder took 276.09ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 40.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,193 INFO L158 Benchmark]: TraceAbstraction took 115323.70ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 40.3MB in the beginning and 53.3MB in the end (delta: -13.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,193 INFO L158 Benchmark]: Witness Printer took 37.44ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 51.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:08:56,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.80ms. Allocated memory is still 71.3MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 108.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.09ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 51.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.44ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 50.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.09ms. Allocated memory is still 71.3MB. Free memory was 50.5MB in the beginning and 40.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 115323.70ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 40.3MB in the beginning and 53.3MB in the end (delta: -13.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 37.44ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 51.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [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++<10 [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: 115255.47ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.13ms, AutomataDifference: 73901.45ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.29ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 62223.22ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 60059.92ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276 IncrementalHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 276 mSolverCounterSat, 7.70ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 28639.60ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 20.68ms AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.74ms SsaConstructionTime, 2482.92ms SatisfiabilityAnalysisTime, 36346.90ms 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! [2021-08-29 13:08:56,396 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...