./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 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/hard-u_unwindbound100.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 eb4bb282415ebfcdf641882420f9b5b96567c902 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/hard-u_unwindbound100.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 eb4bb282415ebfcdf641882420f9b5b96567c902 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:22:02,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:22:02,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:22:02,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:22:02,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:22:02,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:22:02,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:22:02,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:22:02,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:22:02,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:22:02,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:22:02,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:22:02,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:22:02,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:22:02,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:22:02,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:22:02,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:22:02,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:22:02,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:22:02,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:22:02,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:22:02,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:22:02,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:22:02,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:22:02,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:22:02,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:22:02,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:22:02,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:22:02,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:22:02,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:22:02,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:22:02,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:22:02,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:22:02,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:22:02,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:22:02,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:22:02,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:22:02,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:22:02,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:22:02,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:22:02,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:22:02,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:22:02,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:22:02,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:22:02,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:22:02,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:22:02,393 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:22:02,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:22:02,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:22:02,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:22:02,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:22:02,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:22:02,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:22:02,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:22:02,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:22:02,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:22:02,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:22:02,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:22:02,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:22:02,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:22:02,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:22:02,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:22:02,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:22:02,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:22:02,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:22:02,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:22:02,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:22:02,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:22:02,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:22:02,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:22:02,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:22:02,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb4bb282415ebfcdf641882420f9b5b96567c902 [2020-12-01 23:22:02,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:22:02,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:22:02,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:22:02,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:22:02,833 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:22:02,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-01 23:22:02,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc66bf741/3e21af139a254629a6fd7edb60561634/FLAG0fb55bf68 [2020-12-01 23:22:03,562 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:22:03,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-01 23:22:03,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc66bf741/3e21af139a254629a6fd7edb60561634/FLAG0fb55bf68 [2020-12-01 23:22:03,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc66bf741/3e21af139a254629a6fd7edb60561634 [2020-12-01 23:22:03,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:22:03,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:22:03,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:22:03,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:22:04,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:22:04,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:22:03" (1/1) ... [2020-12-01 23:22:04,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc31002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04, skipping insertion in model container [2020-12-01 23:22:04,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:22:03" (1/1) ... [2020-12-01 23:22:04,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:22:04,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:22:04,211 WARN L226 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/hard-u_unwindbound100.c[537,550] [2020-12-01 23:22:04,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:22:04,243 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:22:04,258 WARN L226 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/hard-u_unwindbound100.c[537,550] [2020-12-01 23:22:04,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:22:04,283 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:22:04,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04 WrapperNode [2020-12-01 23:22:04,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:22:04,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:22:04,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:22:04,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:22:04,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:22:04,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:22:04,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:22:04,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:22:04,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... [2020-12-01 23:22:04,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:22:04,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:22:04,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:22:04,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:22:04,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:22:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:22:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:22:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:22:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:22:04,836 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:22:04,837 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 23:22:04,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:22:04 BoogieIcfgContainer [2020-12-01 23:22:04,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:22:04,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:22:04,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:22:04,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:22:04,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:22:03" (1/3) ... [2020-12-01 23:22:04,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1ec680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:22:04, skipping insertion in model container [2020-12-01 23:22:04,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:22:04" (2/3) ... [2020-12-01 23:22:04,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1ec680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:22:04, skipping insertion in model container [2020-12-01 23:22:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:22:04" (3/3) ... [2020-12-01 23:22:04,858 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-01 23:22:04,900 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:22:04,909 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 23:22:04,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 23:22:04,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:22:04,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:22:04,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:22:04,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:22:04,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:22:04,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:22:04,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:22:04,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:22:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-01 23:22:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:22:05,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:05,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:05,028 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:05,037 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-01 23:22:05,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:05,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556388198] [2020-12-01 23:22:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:05,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556388198] [2020-12-01 23:22:05,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:05,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:22:05,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861321864] [2020-12-01 23:22:05,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:22:05,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:05,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:22:05,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:22:05,311 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-01 23:22:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:05,357 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-01 23:22:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:22:05,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 23:22:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:05,388 INFO L225 Difference]: With dead ends: 79 [2020-12-01 23:22:05,388 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 23:22:05,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:22:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 23:22:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 23:22:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 23:22:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-01 23:22:05,442 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-01 23:22:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:05,443 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-01 23:22:05,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:22:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-01 23:22:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:22:05,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:05,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:05,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:22:05,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:05,451 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-01 23:22:05,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:05,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235781662] [2020-12-01 23:22:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:05,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235781662] [2020-12-01 23:22:05,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:05,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 23:22:05,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629910511] [2020-12-01 23:22:05,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:22:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:22:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:22:05,614 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-01 23:22:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:05,711 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-01 23:22:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:22:05,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 23:22:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:05,713 INFO L225 Difference]: With dead ends: 61 [2020-12-01 23:22:05,714 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 23:22:05,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:22:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 23:22:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-01 23:22:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:22:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-01 23:22:05,723 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-01 23:22:05,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:05,724 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-01 23:22:05,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:22:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-01 23:22:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:22:05,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:05,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:05,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:22:05,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:05,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-01 23:22:05,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:05,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634469351] [2020-12-01 23:22:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:05,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634469351] [2020-12-01 23:22:05,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:05,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 23:22:05,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687864613] [2020-12-01 23:22:05,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:22:05,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:05,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:22:05,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:22:05,765 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-01 23:22:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:05,785 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-01 23:22:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:22:05,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 23:22:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:05,787 INFO L225 Difference]: With dead ends: 56 [2020-12-01 23:22:05,787 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 23:22:05,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:22:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 23:22:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 23:22:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 23:22:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-01 23:22:05,796 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-01 23:22:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:05,796 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-01 23:22:05,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:22:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-01 23:22:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:22:05,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:05,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:05,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 23:22:05,798 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-01 23:22:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528208353] [2020-12-01 23:22:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:05,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528208353] [2020-12-01 23:22:05,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:05,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 23:22:05,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407615302] [2020-12-01 23:22:05,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:22:05,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:05,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:22:05,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:22:05,878 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-01 23:22:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:06,003 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-01 23:22:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:22:06,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 23:22:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:06,005 INFO L225 Difference]: With dead ends: 56 [2020-12-01 23:22:06,005 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 23:22:06,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:22:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 23:22:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-01 23:22:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:22:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-01 23:22:06,015 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-01 23:22:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-01 23:22:06,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:22:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-01 23:22:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:22:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:06,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:06,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 23:22:06,018 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-01 23:22:06,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:06,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090843260] [2020-12-01 23:22:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:06,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:06,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296630744] [2020-12-01 23:22:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:06,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 23:22:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:06,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090843260] [2020-12-01 23:22:06,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:06,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296630744] [2020-12-01 23:22:06,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:06,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 23:22:06,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839932845] [2020-12-01 23:22:06,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:22:06,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:06,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:22:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:22:06,343 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-01 23:22:06,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:06,561 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-01 23:22:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:22:06,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-01 23:22:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:06,567 INFO L225 Difference]: With dead ends: 81 [2020-12-01 23:22:06,567 INFO L226 Difference]: Without dead ends: 58 [2020-12-01 23:22:06,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:22:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-01 23:22:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-01 23:22:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-01 23:22:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-01 23:22:06,595 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-01 23:22:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:06,597 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-01 23:22:06,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:22:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-01 23:22:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:22:06,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:06,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:06,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:06,802 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-01 23:22:06,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:06,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813100360] [2020-12-01 23:22:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:06,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:06,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827818500] [2020-12-01 23:22:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:06,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 23:22:06,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:07,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813100360] [2020-12-01 23:22:07,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:07,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827818500] [2020-12-01 23:22:07,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:22:07,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 23:22:07,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090091502] [2020-12-01 23:22:07,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:22:07,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:22:07,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:22:07,026 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-01 23:22:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:07,325 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-01 23:22:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:22:07,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-01 23:22:07,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:07,326 INFO L225 Difference]: With dead ends: 53 [2020-12-01 23:22:07,327 INFO L226 Difference]: Without dead ends: 41 [2020-12-01 23:22:07,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:22:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-01 23:22:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-01 23:22:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-01 23:22:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-01 23:22:07,339 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-01 23:22:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:07,340 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-01 23:22:07,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:22:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-01 23:22:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 23:22:07,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:07,341 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:07,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:07,561 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-01 23:22:07,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:07,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212110655] [2020-12-01 23:22:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:07,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:07,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341307694] [2020-12-01 23:22:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:07,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 23:22:07,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:07,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212110655] [2020-12-01 23:22:07,709 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:07,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341307694] [2020-12-01 23:22:07,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:07,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 23:22:07,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737473952] [2020-12-01 23:22:07,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:22:07,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:07,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:22:07,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:22:07,719 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-01 23:22:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:07,770 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-01 23:22:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:22:07,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 23:22:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:07,771 INFO L225 Difference]: With dead ends: 62 [2020-12-01 23:22:07,771 INFO L226 Difference]: Without dead ends: 43 [2020-12-01 23:22:07,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:22:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-01 23:22:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-01 23:22:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 23:22:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-01 23:22:07,778 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-01 23:22:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:07,778 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-01 23:22:07,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:22:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-01 23:22:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 23:22:07,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:07,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:07,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:07,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:07,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-01 23:22:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071990873] [2020-12-01 23:22:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:08,011 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:08,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009209792] [2020-12-01 23:22:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:08,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-01 23:22:08,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:08,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071990873] [2020-12-01 23:22:08,344 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:08,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009209792] [2020-12-01 23:22:08,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:08,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:22:08,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102650033] [2020-12-01 23:22:08,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:22:08,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:08,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:22:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:22:08,346 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-01 23:22:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:08,866 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-01 23:22:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 23:22:08,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-01 23:22:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:08,868 INFO L225 Difference]: With dead ends: 83 [2020-12-01 23:22:08,868 INFO L226 Difference]: Without dead ends: 71 [2020-12-01 23:22:08,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-01 23:22:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-01 23:22:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-01 23:22:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-01 23:22:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-01 23:22:08,877 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-01 23:22:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:08,877 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-01 23:22:08,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:22:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-01 23:22:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 23:22:08,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:08,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:09,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:09,089 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:09,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-01 23:22:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:09,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412957220] [2020-12-01 23:22:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:09,107 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:09,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297524339] [2020-12-01 23:22:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:09,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 23:22:09,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:09,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412957220] [2020-12-01 23:22:09,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:09,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297524339] [2020-12-01 23:22:09,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:09,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:22:09,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630155662] [2020-12-01 23:22:09,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:22:09,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:09,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:22:09,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:22:09,357 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-01 23:22:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:11,730 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-01 23:22:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:22:11,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-01 23:22:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:11,732 INFO L225 Difference]: With dead ends: 74 [2020-12-01 23:22:11,732 INFO L226 Difference]: Without dead ends: 70 [2020-12-01 23:22:11,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:22:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-01 23:22:11,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-01 23:22:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-01 23:22:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-01 23:22:11,741 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-01 23:22:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:11,742 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-01 23:22:11,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:22:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-01 23:22:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 23:22:11,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:11,743 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:11,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:11,957 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-01 23:22:11,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:11,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846833338] [2020-12-01 23:22:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:11,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:11,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346800100] [2020-12-01 23:22:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:22:12,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:12,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846833338] [2020-12-01 23:22:12,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:12,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346800100] [2020-12-01 23:22:12,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:12,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 23:22:12,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579041734] [2020-12-01 23:22:12,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:22:12,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:22:12,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:22:12,110 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-01 23:22:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:12,136 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-01 23:22:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:22:12,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-01 23:22:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:12,138 INFO L225 Difference]: With dead ends: 71 [2020-12-01 23:22:12,138 INFO L226 Difference]: Without dead ends: 65 [2020-12-01 23:22:12,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:22:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-01 23:22:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-01 23:22:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-01 23:22:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-01 23:22:12,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-01 23:22:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:12,146 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-01 23:22:12,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:22:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-01 23:22:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 23:22:12,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:12,148 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:12,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:12,363 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:12,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-01 23:22:12,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:12,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138353940] [2020-12-01 23:22:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:12,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:12,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904030569] [2020-12-01 23:22:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:12,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:22:12,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:12,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138353940] [2020-12-01 23:22:12,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:12,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904030569] [2020-12-01 23:22:12,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:12,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 23:22:12,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334696888] [2020-12-01 23:22:12,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:22:12,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:22:12,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:22:12,530 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-01 23:22:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:12,575 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-01 23:22:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:22:12,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-01 23:22:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:12,578 INFO L225 Difference]: With dead ends: 94 [2020-12-01 23:22:12,578 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 23:22:12,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:22:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 23:22:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-01 23:22:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 23:22:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-01 23:22:12,587 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-01 23:22:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:12,587 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-01 23:22:12,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:22:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-01 23:22:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 23:22:12,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:12,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:12,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:12,798 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:12,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-01 23:22:12,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:12,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233242549] [2020-12-01 23:22:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:12,810 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:12,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888556123] [2020-12-01 23:22:12,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:13,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:22:13,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:22:13,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-01 23:22:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:22:13,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233242549] [2020-12-01 23:22:13,496 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:22:13,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888556123] [2020-12-01 23:22:13,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:22:13,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 23:22:13,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722174724] [2020-12-01 23:22:13,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 23:22:13,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:22:13,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 23:22:13,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:22:13,498 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-01 23:22:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:22:14,500 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-01 23:22:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 23:22:14,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-01 23:22:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:22:14,503 INFO L225 Difference]: With dead ends: 103 [2020-12-01 23:22:14,503 INFO L226 Difference]: Without dead ends: 93 [2020-12-01 23:22:14,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-01 23:22:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-01 23:22:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-01 23:22:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 23:22:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-01 23:22:14,511 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-01 23:22:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:22:14,512 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-01 23:22:14,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 23:22:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-01 23:22:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 23:22:14,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:22:14,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:22:14,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-01 23:22:14,720 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:22:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:22:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-01 23:22:14,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:22:14,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744760105] [2020-12-01 23:22:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:22:14,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:22:14,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185600175] [2020-12-01 23:22:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:22:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:22:19,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 23:22:19,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:22:19,594 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:19,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 23:22:19,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:22:19,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 23:22:20,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 23:22:20,732 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:22,483 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:24,361 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:26,243 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:28,289 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:29,596 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:30,779 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:32,010 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:33,380 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:34,598 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:35,566 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:36,655 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:37,483 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:41,557 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:45,933 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:50,638 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:22:57,293 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:23:08,684 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:23:26,838 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-01 23:23:29,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744760105] [2020-12-01 23:23:29,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:23:29,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185600175] [2020-12-01 23:23:29,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-01 23:23:29,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:29,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 23:23:29,653 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 23:23:29,653 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:23:29,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:23:29,878 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 23:23:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:23:29 BoogieIcfgContainer [2020-12-01 23:23:29,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:23:29,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:23:29,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:23:29,879 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:23:29,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:22:04" (3/4) ... [2020-12-01 23:23:29,883 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:23:29,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:23:29,886 INFO L168 Benchmark]: Toolchain (without parser) took 85909.98 ms. Allocated memory was 46.1 MB in the beginning and 211.8 MB in the end (delta: 165.7 MB). Free memory was 23.6 MB in the beginning and 161.4 MB in the end (delta: -137.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:29,887 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 29.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:23:29,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.68 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 22.6 MB in the end (delta: 741.0 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:29,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:29,889 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 46.1 MB. Free memory was 21.0 MB in the beginning and 19.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:23:29,889 INFO L168 Benchmark]: RCFGBuilder took 473.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:29,890 INFO L168 Benchmark]: TraceAbstraction took 85037.45 ms. Allocated memory was 56.6 MB in the beginning and 211.8 MB in the end (delta: 155.2 MB). Free memory was 38.4 MB in the beginning and 161.4 MB in the end (delta: -123.0 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:29,890 INFO L168 Benchmark]: Witness Printer took 4.00 ms. Allocated memory is still 211.8 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:23:29,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 29.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.68 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 22.6 MB in the end (delta: 741.0 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 46.1 MB. Free memory was 21.0 MB in the beginning and 19.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 473.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 85037.45 ms. Allocated memory was 56.6 MB in the beginning and 211.8 MB in the end (delta: 155.2 MB). Free memory was 38.4 MB in the beginning and 161.4 MB in the end (delta: -123.0 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.00 ms. Allocated memory is still 211.8 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 84.8s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 632 SolverSat, 126 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:23:32,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:23:32,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:23:32,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:23:32,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:23:32,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:23:32,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:23:32,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:23:32,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:23:32,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:23:32,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:23:32,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:23:32,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:23:32,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:23:32,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:23:32,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:23:32,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:23:32,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:23:32,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:23:32,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:23:32,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:23:32,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:23:32,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:23:32,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:23:32,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:23:32,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:23:32,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:23:32,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:23:32,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:23:32,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:23:32,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:23:32,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:23:32,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:23:32,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:23:32,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:23:32,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:23:32,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:23:32,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:23:32,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:23:32,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:23:32,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:23:32,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:23:32,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:23:32,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:23:32,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:23:32,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:23:32,754 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:23:32,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:23:32,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:23:32,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:23:32,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:23:32,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:23:32,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:23:32,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:23:32,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:23:32,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:23:32,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:23:32,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:23:32,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:23:32,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:23:32,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:23:32,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:23:32,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:23:32,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:23:32,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:23:32,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:23:32,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:23:32,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:23:32,761 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:23:32,761 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:23:32,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:23:32,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:23:32,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:23:32,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb4bb282415ebfcdf641882420f9b5b96567c902 [2020-12-01 23:23:33,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:23:33,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:23:33,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:23:33,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:23:33,270 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:23:33,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-01 23:23:33,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5126bc0ad/2ace58d8a28c4f7bbdfd97cd0f7885b2/FLAG835842aa6 [2020-12-01 23:23:34,142 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:23:34,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-01 23:23:34,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5126bc0ad/2ace58d8a28c4f7bbdfd97cd0f7885b2/FLAG835842aa6 [2020-12-01 23:23:34,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5126bc0ad/2ace58d8a28c4f7bbdfd97cd0f7885b2 [2020-12-01 23:23:34,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:23:34,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:23:34,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:23:34,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:23:34,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:23:34,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3b364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34, skipping insertion in model container [2020-12-01 23:23:34,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:23:34,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:23:34,655 WARN L226 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/hard-u_unwindbound100.c[537,550] [2020-12-01 23:23:34,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:23:34,691 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:23:34,707 WARN L226 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/hard-u_unwindbound100.c[537,550] [2020-12-01 23:23:34,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:23:34,734 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:23:34,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34 WrapperNode [2020-12-01 23:23:34,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:23:34,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:23:34,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:23:34,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:23:34,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:23:34,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:23:34,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:23:34,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:23:34,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... [2020-12-01 23:23:34,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:23:34,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:23:34,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:23:34,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:23:34,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:23:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:23:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:23:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:23:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:23:35,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:23:35,450 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 23:23:35,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:23:35 BoogieIcfgContainer [2020-12-01 23:23:35,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:23:35,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:23:35,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:23:35,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:23:35,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:23:34" (1/3) ... [2020-12-01 23:23:35,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20521559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:23:35, skipping insertion in model container [2020-12-01 23:23:35,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:23:34" (2/3) ... [2020-12-01 23:23:35,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20521559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:23:35, skipping insertion in model container [2020-12-01 23:23:35,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:23:35" (3/3) ... [2020-12-01 23:23:35,462 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-01 23:23:35,479 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:23:35,483 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 23:23:35,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 23:23:35,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:23:35,526 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:23:35,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:23:35,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:23:35,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:23:35,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:23:35,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:23:35,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:23:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-01 23:23:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:23:35,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:35,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:35,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:35,560 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-01 23:23:35,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:35,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543092679] [2020-12-01 23:23:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:35,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:23:35,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:35,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:35,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543092679] [2020-12-01 23:23:35,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:35,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:23:35,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364120001] [2020-12-01 23:23:35,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:23:35,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:35,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:23:35,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:23:35,782 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-01 23:23:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:35,805 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-01 23:23:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:23:35,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 23:23:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:35,816 INFO L225 Difference]: With dead ends: 79 [2020-12-01 23:23:35,817 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 23:23:35,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:23:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 23:23:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 23:23:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 23:23:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-01 23:23:35,864 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-01 23:23:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:35,865 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-01 23:23:35,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:23:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-01 23:23:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:23:35,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:35,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:36,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:23:36,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-01 23:23:36,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:36,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288947736] [2020-12-01 23:23:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:36,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 23:23:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:36,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:36,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288947736] [2020-12-01 23:23:36,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:36,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 23:23:36,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683867498] [2020-12-01 23:23:36,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:23:36,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:23:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:23:36,248 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-01 23:23:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:36,493 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-01 23:23:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:23:36,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-01 23:23:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:36,494 INFO L225 Difference]: With dead ends: 61 [2020-12-01 23:23:36,495 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 23:23:36,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:23:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 23:23:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-01 23:23:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:23:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-01 23:23:36,513 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-01 23:23:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:36,514 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-01 23:23:36,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:23:36,514 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-01 23:23:36,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:23:36,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:36,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:36,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:23:36,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-01 23:23:36,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:36,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521415220] [2020-12-01 23:23:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:36,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 23:23:36,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:36,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:36,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521415220] [2020-12-01 23:23:36,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:36,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-01 23:23:36,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668902141] [2020-12-01 23:23:36,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:23:36,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:36,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:23:36,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:23:36,846 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-01 23:23:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:36,906 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-12-01 23:23:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:23:36,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 23:23:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:36,908 INFO L225 Difference]: With dead ends: 69 [2020-12-01 23:23:36,909 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 23:23:36,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:23:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 23:23:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-01 23:23:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 23:23:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-01 23:23:36,921 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 10 [2020-12-01 23:23:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:36,922 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-01 23:23:36,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:23:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-01 23:23:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:23:36,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:36,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:37,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:23:37,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-01 23:23:37,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:37,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106991588] [2020-12-01 23:23:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:37,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 23:23:37,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:37,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:37,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106991588] [2020-12-01 23:23:37,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:37,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 23:23:37,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632903100] [2020-12-01 23:23:37,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:23:37,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:37,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:23:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:23:37,242 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-12-01 23:23:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:37,494 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-12-01 23:23:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:23:37,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-01 23:23:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:37,497 INFO L225 Difference]: With dead ends: 64 [2020-12-01 23:23:37,497 INFO L226 Difference]: Without dead ends: 62 [2020-12-01 23:23:37,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:23:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-01 23:23:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-12-01 23:23:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 23:23:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-01 23:23:37,521 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2020-12-01 23:23:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:37,524 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-01 23:23:37,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:23:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-01 23:23:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:23:37,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:37,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:37,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 23:23:37,727 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-01 23:23:37,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:37,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896950710] [2020-12-01 23:23:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:37,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 23:23:37,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:37,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:37,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896950710] [2020-12-01 23:23:37,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:37,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 23:23:37,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770012393] [2020-12-01 23:23:37,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:23:37,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:37,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:23:37,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:23:37,949 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-01 23:23:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:40,692 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2020-12-01 23:23:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 23:23:40,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-01 23:23:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:40,698 INFO L225 Difference]: With dead ends: 106 [2020-12-01 23:23:40,699 INFO L226 Difference]: Without dead ends: 83 [2020-12-01 23:23:40,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:23:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-01 23:23:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2020-12-01 23:23:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 23:23:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-12-01 23:23:40,721 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 12 [2020-12-01 23:23:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:40,722 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-12-01 23:23:40,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:23:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-12-01 23:23:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:23:40,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:23:40,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:23:40,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 23:23:40,936 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:23:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:23:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-01 23:23:40,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:23:40,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129413096] [2020-12-01 23:23:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 23:23:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:23:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 23:23:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:23:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:41,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:23:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:23:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129413096] [2020-12-01 23:23:41,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:23:41,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-12-01 23:23:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911534607] [2020-12-01 23:23:41,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:23:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:23:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:23:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:23:41,115 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 5 states. [2020-12-01 23:23:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:23:41,118 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-01 23:23:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:23:41,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-01 23:23:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:23:41,118 INFO L225 Difference]: With dead ends: 63 [2020-12-01 23:23:41,118 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 23:23:41,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:23:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 23:23:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 23:23:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 23:23:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 23:23:41,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-01 23:23:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:23:41,120 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 23:23:41,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:23:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 23:23:41,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 23:23:41,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 23:23:41,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 23:23:41,408 INFO L258 CegarLoopResult]: At program point L35-3(lines 35 43) the Hoare annotation is: false [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 23:23:41,409 INFO L265 CegarLoopResult]: At program point L61(lines 23 62) the Hoare annotation is: true [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 23:23:41,409 INFO L262 CegarLoopResult]: For program point L53(lines 53 56) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point L53-2(lines 23 62) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,410 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,411 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: false [2020-12-01 23:23:41,411 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,411 INFO L258 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: false [2020-12-01 23:23:41,411 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,411 INFO L258 CegarLoopResult]: At program point L15-8(line 39) the Hoare annotation is: false [2020-12-01 23:23:41,411 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,411 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2020-12-01 23:23:41,411 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,412 INFO L258 CegarLoopResult]: At program point L15-14(line 49) the Hoare annotation is: false [2020-12-01 23:23:41,412 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,412 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 23:23:41,412 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0)) [2020-12-01 23:23:41,412 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-01 23:23:41,412 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-01 23:23:41,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,412 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 23:23:41,413 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-01 23:23:41,414 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-01 23:23:41,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:23:41 BoogieIcfgContainer [2020-12-01 23:23:41,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:23:41,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:23:41,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:23:41,431 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:23:41,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:23:35" (3/4) ... [2020-12-01 23:23:41,435 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 23:23:41,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-01 23:23:41,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 23:23:41,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 23:23:41,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 23:23:41,511 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:23:41,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:23:41,514 INFO L168 Benchmark]: Toolchain (without parser) took 7061.04 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 32.5 MB in the beginning and 17.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,514 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 37.7 MB. Free memory was 17.4 MB in the beginning and 17.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:23:41,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.72 ms. Allocated memory is still 48.2 MB. Free memory was 32.2 MB in the beginning and 21.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.10 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 31.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,516 INFO L168 Benchmark]: Boogie Preprocessor took 35.47 ms. Allocated memory is still 48.2 MB. Free memory was 31.9 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,516 INFO L168 Benchmark]: RCFGBuilder took 625.05 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 25.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,517 INFO L168 Benchmark]: TraceAbstraction took 5976.03 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 21.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,517 INFO L168 Benchmark]: Witness Printer took 80.98 ms. Allocated memory is still 58.7 MB. Free memory was 21.0 MB in the beginning and 17.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:23:41,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 37.7 MB. Free memory was 17.4 MB in the beginning and 17.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.72 ms. Allocated memory is still 48.2 MB. Free memory was 32.2 MB in the beginning and 21.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.10 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 31.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.47 ms. Allocated memory is still 48.2 MB. Free memory was 31.9 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 625.05 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 25.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5976.03 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 21.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 80.98 ms. Allocated memory is still 58.7 MB. Free memory was 21.0 MB in the beginning and 17.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (!(cond == 0bv32) && d == B) && 1bv32 == p - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 176 SDslu, 231 SDs, 0 SdLazy, 147 SolverSat, 66 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3446 SizeOfPredicates, 17 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...