./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer --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 3d2afa409951165ba4b0317a5ac755d680981dee ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:35:37,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:37,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:37,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:37,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:37,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:37,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:37,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:37,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:37,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:37,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:37,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:37,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:37,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:37,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:37,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:37,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:37,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:37,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:37,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:37,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:37,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:37,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:37,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:37,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:37,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:37,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:37,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:37,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:37,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:37,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:37,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:37,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:37,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:37,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:37,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:37,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:37,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:37,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:37,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:37,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:37,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:35:37,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:37,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:37,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:37,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:37,408 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:35:37,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:37,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:35:37,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:37,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:35:37,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:37,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:35:37,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:35:37,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:35:37,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:35:37,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:37,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:37,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:35:37,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:37,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:35:37,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:35:37,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:35:37,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:35:37,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:37,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:35:37,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:35:37,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:35:37,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:35:37,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:35:37,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:35:37,413 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:/tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2afa409951165ba4b0317a5ac755d680981dee [2020-11-30 00:35:37,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:37,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:37,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:37,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:37,728 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:37,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2020-11-30 00:35:37,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/data/b763881f4/2e69e75b42f845438bf0d246ab621914/FLAG1a0695ca1 [2020-11-30 00:35:38,399 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:38,400 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2020-11-30 00:35:38,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/data/b763881f4/2e69e75b42f845438bf0d246ab621914/FLAG1a0695ca1 [2020-11-30 00:35:38,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/data/b763881f4/2e69e75b42f845438bf0d246ab621914 [2020-11-30 00:35:38,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:38,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:38,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:38,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:38,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:38,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:38" (1/1) ... [2020-11-30 00:35:38,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cedb3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:38, skipping insertion in model container [2020-11-30 00:35:38,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:38" (1/1) ... [2020-11-30 00:35:38,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:38,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:39,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:39,037 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:39,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:39,101 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:39,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39 WrapperNode [2020-11-30 00:35:39,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:39,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:39,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:39,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:39,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:39,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:39,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:39,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:39,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... [2020-11-30 00:35:39,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:39,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:39,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:39,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:39,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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 [2020-11-30 00:35:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:35:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:35:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:39,963 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:39,963 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-30 00:35:39,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:39 BoogieIcfgContainer [2020-11-30 00:35:39,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:39,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:35:39,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:35:39,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:35:39,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:35:38" (1/3) ... [2020-11-30 00:35:39,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3f25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:39, skipping insertion in model container [2020-11-30 00:35:39,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:39" (2/3) ... [2020-11-30 00:35:39,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3f25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:39, skipping insertion in model container [2020-11-30 00:35:39,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:39" (3/3) ... [2020-11-30 00:35:39,979 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2020-11-30 00:35:39,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:35:39,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:35:40,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:35:40,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:35:40,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:35:40,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:35:40,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:35:40,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:35:40,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:35:40,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:35:40,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:35:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-30 00:35:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:35:40,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:40,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:40,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:40,065 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-11-30 00:35:40,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:40,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927831505] [2020-11-30 00:35:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:40,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927831505] [2020-11-30 00:35:40,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:40,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:35:40,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364057782] [2020-11-30 00:35:40,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:35:40,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:40,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:35:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:35:40,283 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-30 00:35:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:40,303 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2020-11-30 00:35:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:35:40,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:35:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:40,313 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:35:40,313 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:35:40,316 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 [2020-11-30 00:35:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:35:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:35:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:35:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 00:35:40,352 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2020-11-30 00:35:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:40,353 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 00:35:40,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:35:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 00:35:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:35:40,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:40,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:40,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:35:40,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-11-30 00:35:40,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:40,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27121568] [2020-11-30 00:35:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:40,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:40,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698383649] [2020-11-30 00:35:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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 [2020-11-30 00:35:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:35:40,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:40,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27121568] [2020-11-30 00:35:40,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:40,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698383649] [2020-11-30 00:35:40,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:40,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:35:40,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136214451] [2020-11-30 00:35:40,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:35:40,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:40,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:35:40,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:35:40,554 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-30 00:35:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:40,690 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-11-30 00:35:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:35:40,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:35:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:40,692 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:35:40,692 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:35:40,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:35:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-30 00:35:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 00:35:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-30 00:35:40,698 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2020-11-30 00:35:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:40,699 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-30 00:35:40,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:35:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-30 00:35:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:35:40,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:40,701 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:40,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:35:40,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:40,921 INFO L82 PathProgramCache]: Analyzing trace with hash 637918818, now seen corresponding path program 1 times [2020-11-30 00:35:40,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:40,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175369880] [2020-11-30 00:35:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:40,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:40,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444580408] [2020-11-30 00:35:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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 [2020-11-30 00:35:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:41,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:35:41,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:41,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175369880] [2020-11-30 00:35:41,145 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:41,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444580408] [2020-11-30 00:35:41,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:35:41,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:35:41,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973266142] [2020-11-30 00:35:41,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:35:41,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:35:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:41,149 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-11-30 00:35:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:41,457 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-30 00:35:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:35:41,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:35:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:41,460 INFO L225 Difference]: With dead ends: 36 [2020-11-30 00:35:41,461 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:35:41,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:35:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:35:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-30 00:35:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:35:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 00:35:41,475 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2020-11-30 00:35:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:41,476 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 00:35:41,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:35:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 00:35:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:35:41,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:41,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:41,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:41,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash -984884012, now seen corresponding path program 2 times [2020-11-30 00:35:41,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:41,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505360050] [2020-11-30 00:35:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:41,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:41,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268843670] [2020-11-30 00:35:41,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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 [2020-11-30 00:35:41,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:35:41,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:35:41,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:35:41,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:41,936 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:41,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:42,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505360050] [2020-11-30 00:35:42,022 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:42,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268843670] [2020-11-30 00:35:42,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:42,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:35:42,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810381796] [2020-11-30 00:35:42,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:35:42,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:35:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:35:42,026 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-11-30 00:35:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:42,164 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-30 00:35:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:35:42,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:35:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:42,166 INFO L225 Difference]: With dead ends: 31 [2020-11-30 00:35:42,166 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:35:42,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:35:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:35:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:35:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:35:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-30 00:35:42,172 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 15 [2020-11-30 00:35:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:42,172 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-30 00:35:42,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:35:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-30 00:35:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:35:42,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:42,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:42,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:42,374 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1618715859, now seen corresponding path program 1 times [2020-11-30 00:35:42,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:42,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326959506] [2020-11-30 00:35:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:42,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:42,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224866193] [2020-11-30 00:35:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/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 [2020-11-30 00:35:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:42,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:35:42,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:42,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:42,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:35:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:42,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326959506] [2020-11-30 00:35:42,524 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:42,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224866193] [2020-11-30 00:35:42,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:35:42,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:35:42,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816329338] [2020-11-30 00:35:42,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:35:42,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:42,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:35:42,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:35:42,527 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 6 states. [2020-11-30 00:35:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:42,621 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-30 00:35:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:35:42,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 00:35:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:42,621 INFO L225 Difference]: With dead ends: 18 [2020-11-30 00:35:42,622 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:35:42,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:35:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:35:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:35:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:35:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:35:42,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-30 00:35:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:42,624 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:42,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:35:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:35:42,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:35:42,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:42,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:35:43,021 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-30 00:35:43,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-30 00:35:43,200 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:35:43,200 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-30 00:35:43,200 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-30 00:35:43,201 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2020-11-30 00:35:43,201 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-30 00:35:43,201 INFO L274 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed. [2020-11-30 00:35:43,201 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:35:43,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:35:43,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:35:43,202 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~c~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1) (and (= ULTIMATE.start_main_~c~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1))) [2020-11-30 00:35:43,203 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2020-11-30 00:35:43,203 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:35:43,203 INFO L277 CegarLoopResult]: At program point L41(lines 17 42) the Hoare annotation is: true [2020-11-30 00:35:43,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:35:43,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:35:43,204 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-30 00:35:43,205 INFO L270 CegarLoopResult]: At program point L10-1(lines 31 32) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~c~0 1) .cse0 (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse1 (< 0 ULTIMATE.start_main_~k~0) .cse2) (and (= ULTIMATE.start_main_~c~0 0) (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 0) .cse1 (<= 0 ULTIMATE.start_main_~k~0) .cse2))) [2020-11-30 00:35:43,205 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-30 00:35:43,205 INFO L270 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~c~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 0))) [2020-11-30 00:35:43,205 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-30 00:35:43,206 INFO L274 CegarLoopResult]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2020-11-30 00:35:43,206 INFO L274 CegarLoopResult]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2020-11-30 00:35:43,206 INFO L277 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-11-30 00:35:43,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:35:43 BoogieIcfgContainer [2020-11-30 00:35:43,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:35:43,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:35:43,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:35:43,230 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:35:43,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:39" (3/4) ... [2020-11-30 00:35:43,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:35:43,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 00:35:43,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:35:43,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:35:43,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:35:43,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70c7cf50-9ab7-4fb9-88ca-288f90cb38b3/bin/uautomizer/witness.graphml [2020-11-30 00:35:43,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:35:43,300 INFO L168 Benchmark]: Toolchain (without parser) took 4583.22 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 67.2 MB in the beginning and 62.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,301 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:43,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.68 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 72.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.97 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,303 INFO L168 Benchmark]: Boogie Preprocessor took 28.19 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.6 MB in the end (delta: 996.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:43,304 INFO L168 Benchmark]: RCFGBuilder took 787.14 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 56.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,304 INFO L168 Benchmark]: TraceAbstraction took 3262.17 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 56.2 MB in the beginning and 65.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,305 INFO L168 Benchmark]: Witness Printer took 69.64 ms. Allocated memory is still 125.8 MB. Free memory was 65.9 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:43,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 96.5 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.68 ms. Allocated memory is still 96.5 MB. Free memory was 67.2 MB in the beginning and 72.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.97 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.19 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.6 MB in the end (delta: 996.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 787.14 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 56.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3262.17 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 56.2 MB in the beginning and 65.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.64 ms. Allocated memory is still 125.8 MB. Free memory was 65.9 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((y * y * y * y * y == x && c <= 1) && 1 <= cond) && 1 <= c) && y == 1) && cond == 1) && 0 < k) && k <= 1) || (((((c == 0 && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((((c <= 1 && 1 <= c) && y == 1) && cond == 1) && 0 < k) && k <= 1) || ((x == 0 && 1 <= cond) && y == 0) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((y * y * y * y * y == x && c <= 1) && 1 <= cond) && 1 <= c) && y == 1) && cond == 1) && 0 < k) && k <= 1) || ((((((c == 0 && x == 0) && 1 <= cond) && y == 0) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 41 SDslu, 85 SDs, 0 SdLazy, 98 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 135 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 3592 SizeOfPredicates, 16 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 7/12 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...