./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.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_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e42a14d02446d341c51d21bb42c9bd175f1ebef ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:22,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:22,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:22,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:22,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:22,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:22,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:22,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:22,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:22,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:22,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:22,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:22,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:22,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:22,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:22,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:22,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:22,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:22,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:22,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:22,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:22,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:22,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:22,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:22,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:22,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:22,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:22,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:22,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:22,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:22,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:22,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:22,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:22,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:22,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:22,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:22,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:22,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:22,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:22,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:22,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:22,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:22,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:22,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:22,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:22,632 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:22,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:22,632 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:22,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:22,634 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:22,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:22,634 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:22,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:22,635 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:22,636 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:22,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:22,636 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:22,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:22,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:22,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:22,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:22,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:22,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:22,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:22,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:22,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:22,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:22,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:22,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:22,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:22,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:22,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:22,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:22,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:22,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:22,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:22,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:22,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:22,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:22,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:22,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:22,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:22,645 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2020-11-22 12:57:22,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:22,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:22,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:22,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:22,915 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:22,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/../../sv-benchmarks/c/psyco/psyco_io_1.c [2020-11-22 12:57:23,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/data/9a32e0d0e/8eaaa30e668c4031826483705798340e/FLAG23e44e85b [2020-11-22 12:57:23,499 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:23,500 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/sv-benchmarks/c/psyco/psyco_io_1.c [2020-11-22 12:57:23,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/data/9a32e0d0e/8eaaa30e668c4031826483705798340e/FLAG23e44e85b [2020-11-22 12:57:23,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/data/9a32e0d0e/8eaaa30e668c4031826483705798340e [2020-11-22 12:57:23,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:23,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:23,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:23,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:23,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:23,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:23" (1/1) ... [2020-11-22 12:57:23,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e1464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:23, skipping insertion in model container [2020-11-22 12:57:23,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:23" (1/1) ... [2020-11-22 12:57:23,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:23,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:24,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:24,124 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:24,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:24,176 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:24,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24 WrapperNode [2020-11-22 12:57:24,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:24,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:24,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:24,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:24,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:24,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:24,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:24,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:24,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... [2020-11-22 12:57:24,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:24,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:24,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:24,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:24,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/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 [2020-11-22 12:57:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:24,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:24,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:24,907 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-22 12:57:24,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:24 BoogieIcfgContainer [2020-11-22 12:57:24,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:24,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:24,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:24,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:24,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:23" (1/3) ... [2020-11-22 12:57:24,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7174af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:24, skipping insertion in model container [2020-11-22 12:57:24,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:24" (2/3) ... [2020-11-22 12:57:24,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7174af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:24, skipping insertion in model container [2020-11-22 12:57:24,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:24" (3/3) ... [2020-11-22 12:57:24,923 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-11-22 12:57:24,941 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:24,946 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:24,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:24,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:24,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:24,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:24,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:24,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:24,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:24,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:24,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-22 12:57:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:57:25,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:25,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash -971347217, now seen corresponding path program 1 times [2020-11-22 12:57:25,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224823815] [2020-11-22 12:57:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224823815] [2020-11-22 12:57:25,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:25,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107183726] [2020-11-22 12:57:25,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:25,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:25,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:25,212 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-11-22 12:57:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,236 INFO L93 Difference]: Finished difference Result 127 states and 241 transitions. [2020-11-22 12:57:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:25,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 12:57:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,249 INFO L225 Difference]: With dead ends: 127 [2020-11-22 12:57:25,249 INFO L226 Difference]: Without dead ends: 56 [2020-11-22 12:57:25,252 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 [2020-11-22 12:57:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-22 12:57:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-22 12:57:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-22 12:57:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2020-11-22 12:57:25,291 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 8 [2020-11-22 12:57:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,291 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2020-11-22 12:57:25,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2020-11-22 12:57:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:57:25,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:25,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:25,294 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash 485500801, now seen corresponding path program 1 times [2020-11-22 12:57:25,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208875459] [2020-11-22 12:57:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208875459] [2020-11-22 12:57:25,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:25,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689281102] [2020-11-22 12:57:25,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:25,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,411 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand 3 states. [2020-11-22 12:57:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,486 INFO L93 Difference]: Finished difference Result 114 states and 175 transitions. [2020-11-22 12:57:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:25,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 12:57:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,487 INFO L225 Difference]: With dead ends: 114 [2020-11-22 12:57:25,487 INFO L226 Difference]: Without dead ends: 59 [2020-11-22 12:57:25,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-22 12:57:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-22 12:57:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-22 12:57:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2020-11-22 12:57:25,496 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 9 [2020-11-22 12:57:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,496 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2020-11-22 12:57:25,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2020-11-22 12:57:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:57:25,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,498 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:25,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:25,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1705527406, now seen corresponding path program 1 times [2020-11-22 12:57:25,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885262368] [2020-11-22 12:57:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885262368] [2020-11-22 12:57:25,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:25,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272644005] [2020-11-22 12:57:25,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:25,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,564 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand 3 states. [2020-11-22 12:57:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,644 INFO L93 Difference]: Finished difference Result 122 states and 184 transitions. [2020-11-22 12:57:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:25,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-22 12:57:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,646 INFO L225 Difference]: With dead ends: 122 [2020-11-22 12:57:25,646 INFO L226 Difference]: Without dead ends: 65 [2020-11-22 12:57:25,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-22 12:57:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-11-22 12:57:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-22 12:57:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2020-11-22 12:57:25,656 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 14 [2020-11-22 12:57:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,656 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2020-11-22 12:57:25,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2020-11-22 12:57:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 12:57:25,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,658 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:25,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:25,658 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash -783656660, now seen corresponding path program 1 times [2020-11-22 12:57:25,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143108600] [2020-11-22 12:57:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:25,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143108600] [2020-11-22 12:57:25,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:25,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199952711] [2020-11-22 12:57:25,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:25,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:25,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,727 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand 3 states. [2020-11-22 12:57:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:25,813 INFO L93 Difference]: Finished difference Result 181 states and 271 transitions. [2020-11-22 12:57:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:25,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-22 12:57:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:25,815 INFO L225 Difference]: With dead ends: 181 [2020-11-22 12:57:25,816 INFO L226 Difference]: Without dead ends: 116 [2020-11-22 12:57:25,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-22 12:57:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2020-11-22 12:57:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-22 12:57:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2020-11-22 12:57:25,840 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 19 [2020-11-22 12:57:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:25,841 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2020-11-22 12:57:25,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2020-11-22 12:57:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 12:57:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:25,843 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:25,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:25,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:25,846 INFO L82 PathProgramCache]: Analyzing trace with hash 64539698, now seen corresponding path program 1 times [2020-11-22 12:57:25,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:25,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589597885] [2020-11-22 12:57:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:57:25,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589597885] [2020-11-22 12:57:25,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:25,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:25,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197760059] [2020-11-22 12:57:25,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:25,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:25,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:25,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:25,986 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand 3 states. [2020-11-22 12:57:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:26,036 INFO L93 Difference]: Finished difference Result 177 states and 263 transitions. [2020-11-22 12:57:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:26,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-22 12:57:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:26,039 INFO L225 Difference]: With dead ends: 177 [2020-11-22 12:57:26,039 INFO L226 Difference]: Without dead ends: 72 [2020-11-22 12:57:26,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-22 12:57:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-22 12:57:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-22 12:57:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2020-11-22 12:57:26,063 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 26 [2020-11-22 12:57:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:26,064 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2020-11-22 12:57:26,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2020-11-22 12:57:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-22 12:57:26,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:26,065 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:26,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:57:26,066 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:26,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1884041215, now seen corresponding path program 1 times [2020-11-22 12:57:26,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:26,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342813276] [2020-11-22 12:57:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:57:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342813276] [2020-11-22 12:57:26,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:26,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:57:26,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962428574] [2020-11-22 12:57:26,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:26,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:26,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:26,158 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand 4 states. [2020-11-22 12:57:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:26,231 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2020-11-22 12:57:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:26,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-22 12:57:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:26,233 INFO L225 Difference]: With dead ends: 75 [2020-11-22 12:57:26,233 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:26,234 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 [2020-11-22 12:57:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:26,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-22 12:57:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:26,259 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:26,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:26,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:26,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:26,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:26,341 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-11-22 12:57:26,342 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-11-22 12:57:26,343 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)) (and (= ULTIMATE.start_main_~q~0 2) .cse0))) [2020-11-22 12:57:26,343 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-11-22 12:57:26,343 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-11-22 12:57:26,343 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-11-22 12:57:26,343 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-11-22 12:57:26,343 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-11-22 12:57:26,344 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-11-22 12:57:26,345 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-11-22 12:57:26,345 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-11-22 12:57:26,345 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-11-22 12:57:26,345 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and (= ULTIMATE.start_main_~q~0 0) .cse0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)))) [2020-11-22 12:57:26,348 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-11-22 12:57:26,349 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-11-22 12:57:26,349 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-11-22 12:57:26,349 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-11-22 12:57:26,349 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-11-22 12:57:26,349 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-11-22 12:57:26,350 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-11-22 12:57:26,350 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-11-22 12:57:26,350 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-11-22 12:57:26,350 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-11-22 12:57:26,350 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-11-22 12:57:26,351 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-11-22 12:57:26,352 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-11-22 12:57:26,353 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-22 12:57:26,353 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-11-22 12:57:26,353 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-11-22 12:57:26,353 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-11-22 12:57:26,354 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-11-22 12:57:26,355 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-11-22 12:57:26,355 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-11-22 12:57:26,355 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-11-22 12:57:26,355 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-11-22 12:57:26,355 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-11-22 12:57:26,356 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-11-22 12:57:26,356 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-11-22 12:57:26,356 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-11-22 12:57:26,356 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-11-22 12:57:26,357 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-11-22 12:57:26,357 INFO L277 CegarLoopResult]: At program point L15(lines 15 346) the Hoare annotation is: true [2020-11-22 12:57:26,357 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-11-22 12:57:26,357 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:26,357 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-11-22 12:57:26,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:26 BoogieIcfgContainer [2020-11-22 12:57:26,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:26,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:26,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:26,389 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:26,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:24" (3/4) ... [2020-11-22 12:57:26,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:26,421 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 12:57:26,421 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:57:26,421 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:26,422 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:26,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_10edd087-2a6d-4313-8bae-898d08c882f5/bin/utaipan/witness.graphml [2020-11-22 12:57:26,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:26,483 INFO L168 Benchmark]: Toolchain (without parser) took 2626.39 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 80.2 MB in the beginning and 104.5 MB in the end (delta: -24.3 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:26,484 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:26,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.43 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 87.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:26,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.02 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:26,488 INFO L168 Benchmark]: Boogie Preprocessor took 28.97 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:26,489 INFO L168 Benchmark]: RCFGBuilder took 646.98 ms. Allocated memory is still 113.2 MB. Free memory was 83.7 MB in the beginning and 54.7 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:26,494 INFO L168 Benchmark]: TraceAbstraction took 1467.34 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 54.7 MB in the beginning and 107.7 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:26,495 INFO L168 Benchmark]: Witness Printer took 91.17 ms. Allocated memory is still 140.5 MB. Free memory was 107.7 MB in the beginning and 104.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:26,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.43 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 87.3 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.02 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.97 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 646.98 ms. Allocated memory is still 113.2 MB. Free memory was 83.7 MB in the beginning and 54.7 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1467.34 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 54.7 MB in the beginning and 107.7 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 91.17 ms. Allocated memory is still 140.5 MB. Free memory was 107.7 MB in the beginning and 104.5 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (3 <= q && !(this_sink == 0))) || (q == 2 && this_sink == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 140 SDslu, 277 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=4, 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, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 4 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 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...