./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.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_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/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 b174e1814bd9b57d51be1f924645d02065497326 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:35,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:35,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:35,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:35,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:35,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:35,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:35,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:35,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:35,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:35,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:35,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:35,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:35,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:35,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:35,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:35,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:35,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:35,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:35,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:35,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:35,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:35,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:35,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:35,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:35,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:35,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:35,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:35,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:35,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:35,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:35,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:35,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:35,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:35,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:35,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:35,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:35,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:35,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:35,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:35,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:35,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:35,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:35,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:35,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:35,618 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:35,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:35,618 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:35,618 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:35,619 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:35,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:35,619 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:35,619 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:35,619 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:35,620 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:35,620 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:35,620 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:35,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:35,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:35,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:35,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:35,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:35,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:35,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:35,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:35,623 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:35,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:35,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:35,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:35,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:35,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:35,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:35,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:35,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:35,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:35,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:35,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:35,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:35,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:35,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:35,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:35,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:35,626 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_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b174e1814bd9b57d51be1f924645d02065497326 [2020-11-28 07:38:35,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:35,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:35,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:35,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:35,911 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:35,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2020-11-28 07:38:35,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/data/f165e8dd2/4dd3f77dfa49451092983a425ca65197/FLAGbc574b713 [2020-11-28 07:38:36,602 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:36,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2020-11-28 07:38:36,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/data/f165e8dd2/4dd3f77dfa49451092983a425ca65197/FLAGbc574b713 [2020-11-28 07:38:36,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/data/f165e8dd2/4dd3f77dfa49451092983a425ca65197 [2020-11-28 07:38:36,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:36,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:36,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:36,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:36,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:36,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd5b4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36, skipping insertion in model container [2020-11-28 07:38:36,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:36,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:37,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:37,430 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:37,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:37,592 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:37,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37 WrapperNode [2020-11-28 07:38:37,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:37,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:37,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:37,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:37,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:37,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:37,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:37,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:37,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:37,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:37,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:37,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:37,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/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 [2020-11-28 07:38:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:37,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:40,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:40,129 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:38:40,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:40 BoogieIcfgContainer [2020-11-28 07:38:40,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:40,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:40,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:40,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:40,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:36" (1/3) ... [2020-11-28 07:38:40,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb4b91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:40, skipping insertion in model container [2020-11-28 07:38:40,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (2/3) ... [2020-11-28 07:38:40,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb4b91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:40, skipping insertion in model container [2020-11-28 07:38:40,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:40" (3/3) ... [2020-11-28 07:38:40,143 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-11-28 07:38:40,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:40,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:40,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:40,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:40,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:40,212 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:40,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:40,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:40,213 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:40,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:40,213 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:38:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:38:40,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:40,246 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:40,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1520703597, now seen corresponding path program 1 times [2020-11-28 07:38:40,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:40,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039437995] [2020-11-28 07:38:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:40,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039437995] [2020-11-28 07:38:40,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:40,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:40,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869920296] [2020-11-28 07:38:40,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:40,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:40,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:40,644 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:38:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:41,248 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:38:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:41,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:38:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:41,263 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:38:41,263 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:38:41,266 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 [2020-11-28 07:38:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:38:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:38:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:38:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-28 07:38:41,347 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-28 07:38:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:41,349 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-28 07:38:41,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-28 07:38:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:38:41,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:41,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:41,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:41,356 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:41,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1975142590, now seen corresponding path program 1 times [2020-11-28 07:38:41,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:41,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505859604] [2020-11-28 07:38:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:41,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505859604] [2020-11-28 07:38:41,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:41,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:41,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070876199] [2020-11-28 07:38:41,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:41,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:41,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:41,493 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-28 07:38:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:41,971 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-28 07:38:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:41,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:38:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:41,974 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:38:41,974 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:38:41,976 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 [2020-11-28 07:38:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:38:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:38:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:38:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2020-11-28 07:38:41,998 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 77 [2020-11-28 07:38:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:41,999 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2020-11-28 07:38:41,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:41,999 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2020-11-28 07:38:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:38:42,002 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:42,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:42,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:42,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:42,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:42,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1832095172, now seen corresponding path program 1 times [2020-11-28 07:38:42,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:42,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714676969] [2020-11-28 07:38:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:42,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714676969] [2020-11-28 07:38:42,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:42,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:42,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31182643] [2020-11-28 07:38:42,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:42,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:42,120 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 3 states. [2020-11-28 07:38:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:42,640 INFO L93 Difference]: Finished difference Result 786 states and 1390 transitions. [2020-11-28 07:38:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:42,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-28 07:38:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:42,644 INFO L225 Difference]: With dead ends: 786 [2020-11-28 07:38:42,644 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 07:38:42,646 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 [2020-11-28 07:38:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 07:38:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-11-28 07:38:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:38:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 676 transitions. [2020-11-28 07:38:42,670 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 676 transitions. Word has length 78 [2020-11-28 07:38:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:42,671 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 676 transitions. [2020-11-28 07:38:42,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 676 transitions. [2020-11-28 07:38:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-28 07:38:42,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:42,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:42,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:38:42,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash 647143133, now seen corresponding path program 1 times [2020-11-28 07:38:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:42,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135701651] [2020-11-28 07:38:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:42,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135701651] [2020-11-28 07:38:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:42,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:42,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634752503] [2020-11-28 07:38:42,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:42,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:42,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:42,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:42,748 INFO L87 Difference]: Start difference. First operand 429 states and 676 transitions. Second operand 3 states. [2020-11-28 07:38:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:43,256 INFO L93 Difference]: Finished difference Result 1141 states and 1810 transitions. [2020-11-28 07:38:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:43,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-11-28 07:38:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:43,260 INFO L225 Difference]: With dead ends: 1141 [2020-11-28 07:38:43,260 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:38:43,262 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 [2020-11-28 07:38:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:38:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 429. [2020-11-28 07:38:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:38:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 562 transitions. [2020-11-28 07:38:43,300 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 562 transitions. Word has length 79 [2020-11-28 07:38:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:43,300 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 562 transitions. [2020-11-28 07:38:43,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 562 transitions. [2020-11-28 07:38:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-28 07:38:43,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:43,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:43,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:38:43,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1553698881, now seen corresponding path program 1 times [2020-11-28 07:38:43,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:43,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646548432] [2020-11-28 07:38:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-28 07:38:43,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646548432] [2020-11-28 07:38:43,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:43,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:43,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902443281] [2020-11-28 07:38:43,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:43,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:43,481 INFO L87 Difference]: Start difference. First operand 429 states and 562 transitions. Second operand 4 states. [2020-11-28 07:38:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:43,959 INFO L93 Difference]: Finished difference Result 1141 states and 1491 transitions. [2020-11-28 07:38:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:43,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-11-28 07:38:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:43,977 INFO L225 Difference]: With dead ends: 1141 [2020-11-28 07:38:43,977 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:38:43,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:38:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2020-11-28 07:38:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 07:38:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 805 transitions. [2020-11-28 07:38:44,005 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 805 transitions. Word has length 125 [2020-11-28 07:38:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:44,005 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 805 transitions. [2020-11-28 07:38:44,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 805 transitions. [2020-11-28 07:38:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-28 07:38:44,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:44,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:44,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:38:44,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:44,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1273833313, now seen corresponding path program 1 times [2020-11-28 07:38:44,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:44,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019027993] [2020-11-28 07:38:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:38:44,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019027993] [2020-11-28 07:38:44,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:44,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:44,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135732790] [2020-11-28 07:38:44,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:44,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:44,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:44,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:44,174 INFO L87 Difference]: Start difference. First operand 642 states and 805 transitions. Second operand 3 states. [2020-11-28 07:38:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:44,624 INFO L93 Difference]: Finished difference Result 1354 states and 1703 transitions. [2020-11-28 07:38:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:44,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-11-28 07:38:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:44,629 INFO L225 Difference]: With dead ends: 1354 [2020-11-28 07:38:44,629 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:38:44,633 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 [2020-11-28 07:38:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:38:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-11-28 07:38:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-28 07:38:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 889 transitions. [2020-11-28 07:38:44,663 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 889 transitions. Word has length 150 [2020-11-28 07:38:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:44,664 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 889 transitions. [2020-11-28 07:38:44,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 889 transitions. [2020-11-28 07:38:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:38:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:44,674 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:44,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:38:44,674 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:44,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2031273435, now seen corresponding path program 1 times [2020-11-28 07:38:44,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:44,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304555420] [2020-11-28 07:38:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:38:44,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304555420] [2020-11-28 07:38:44,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:44,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:44,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598189449] [2020-11-28 07:38:44,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:44,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:44,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:44,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:44,854 INFO L87 Difference]: Start difference. First operand 713 states and 889 transitions. Second operand 4 states. [2020-11-28 07:38:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:45,486 INFO L93 Difference]: Finished difference Result 1709 states and 2115 transitions. [2020-11-28 07:38:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:45,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:38:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:45,492 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:38:45,492 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:38:45,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:38:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2020-11-28 07:38:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:38:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1046 transitions. [2020-11-28 07:38:45,518 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1046 transitions. Word has length 154 [2020-11-28 07:38:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:45,518 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1046 transitions. [2020-11-28 07:38:45,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1046 transitions. [2020-11-28 07:38:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:38:45,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:45,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:45,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:38:45,522 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash -536192142, now seen corresponding path program 1 times [2020-11-28 07:38:45,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:45,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435501884] [2020-11-28 07:38:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 07:38:45,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435501884] [2020-11-28 07:38:45,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:45,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:45,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209116215] [2020-11-28 07:38:45,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:45,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:45,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:45,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:45,699 INFO L87 Difference]: Start difference. First operand 855 states and 1046 transitions. Second operand 3 states. [2020-11-28 07:38:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:46,113 INFO L93 Difference]: Finished difference Result 1851 states and 2244 transitions. [2020-11-28 07:38:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:46,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:38:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:46,120 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:38:46,121 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:38:46,122 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 [2020-11-28 07:38:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:38:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2020-11-28 07:38:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-28 07:38:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1018 transitions. [2020-11-28 07:38:46,146 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1018 transitions. Word has length 171 [2020-11-28 07:38:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:46,147 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1018 transitions. [2020-11-28 07:38:46,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1018 transitions. [2020-11-28 07:38:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-28 07:38:46,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:46,150 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:46,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:38:46,152 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash 223923253, now seen corresponding path program 1 times [2020-11-28 07:38:46,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:46,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826008284] [2020-11-28 07:38:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:46,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826008284] [2020-11-28 07:38:46,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305763952] [2020-11-28 07:38:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/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 [2020-11-28 07:38:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:46,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:46,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 07:38:46,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 07:38:47,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:38:47,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:38:47,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562644284] [2020-11-28 07:38:47,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:47,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:47,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:38:47,086 INFO L87 Difference]: Start difference. First operand 855 states and 1018 transitions. Second operand 3 states. [2020-11-28 07:38:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:47,605 INFO L93 Difference]: Finished difference Result 1778 states and 2128 transitions. [2020-11-28 07:38:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:47,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-11-28 07:38:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:47,606 INFO L225 Difference]: With dead ends: 1778 [2020-11-28 07:38:47,606 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:38:47,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:38:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:38:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:38:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:38:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:38:47,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-11-28 07:38:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:47,609 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:38:47,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:38:47,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:38:47,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 07:38:47,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:38:47,988 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:38:48,082 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:38:48,083 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:38:48,084 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 0)) (.cse3 (<= 15 ~a8~0)) (.cse0 (= ~a21~0 1)) (.cse2 (= ~a20~0 1)) (.cse4 (= ~a17~0 1))) (or (= ~a7~0 1) (and .cse0 .cse1 .cse2) (and (<= ~a16~0 5) .cse1) (and .cse1 .cse3) (and .cse3 .cse4) (and .cse0 .cse2 .cse4))) [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:38:48,085 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:38:48,086 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 0)) (.cse3 (<= 15 ~a8~0)) (.cse0 (= ~a21~0 1)) (.cse2 (= ~a20~0 1)) (.cse4 (= ~a17~0 1))) (or (= ~a7~0 1) (and .cse0 .cse1 .cse2) (and (<= ~a16~0 5) .cse1) (and .cse1 .cse3) (and .cse3 .cse4) (and .cse0 .cse2 .cse4))) [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:38:48,087 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:38:48,088 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:38:48,088 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:38:48,088 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:38:48,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:48 BoogieIcfgContainer [2020-11-28 07:38:48,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:48,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:48,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:48,113 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:48,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:40" (3/4) ... [2020-11-28 07:38:48,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:38:48,145 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-28 07:38:48,147 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:38:48,148 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:38:48,150 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:38:48,284 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a0a4c3bb-04a2-48a6-8ca5-e8913b5234ef/bin/utaipan/witness.graphml [2020-11-28 07:38:48,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:48,286 INFO L168 Benchmark]: Toolchain (without parser) took 11434.62 ms. Allocated memory was 96.5 MB in the beginning and 323.0 MB in the end (delta: 226.5 MB). Free memory was 65.6 MB in the beginning and 148.8 MB in the end (delta: -83.1 MB). Peak memory consumption was 143.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,286 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 55.2 MB in the beginning and 55.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:48,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.21 ms. Allocated memory is still 96.5 MB. Free memory was 65.4 MB in the beginning and 56.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.92 ms. Allocated memory is still 96.5 MB. Free memory was 56.6 MB in the beginning and 50.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,287 INFO L168 Benchmark]: Boogie Preprocessor took 56.94 ms. Allocated memory is still 96.5 MB. Free memory was 50.9 MB in the beginning and 46.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,288 INFO L168 Benchmark]: RCFGBuilder took 2396.27 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 46.1 MB in the beginning and 80.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,288 INFO L168 Benchmark]: TraceAbstraction took 7978.78 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 80.0 MB in the beginning and 164.5 MB in the end (delta: -84.5 MB). Peak memory consumption was 112.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,289 INFO L168 Benchmark]: Witness Printer took 172.42 ms. Allocated memory is still 323.0 MB. Free memory was 164.5 MB in the beginning and 148.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:48,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 55.2 MB in the beginning and 55.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.21 ms. Allocated memory is still 96.5 MB. Free memory was 65.4 MB in the beginning and 56.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.92 ms. Allocated memory is still 96.5 MB. Free memory was 56.6 MB in the beginning and 50.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.94 ms. Allocated memory is still 96.5 MB. Free memory was 50.9 MB in the beginning and 46.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2396.27 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 46.1 MB in the beginning and 80.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7978.78 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 80.0 MB in the beginning and 164.5 MB in the end (delta: -84.5 MB). Peak memory consumption was 112.7 MB. Max. memory is 16.1 GB. * Witness Printer took 172.42 ms. Allocated memory is still 323.0 MB. Free memory was 164.5 MB in the beginning and 148.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: ((((a7 == 1 || ((a21 == 1 && a17 <= 0) && a20 == 1)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || (15 <= a8 && a17 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a7 == 1 || ((a21 == 1 && a17 <= 0) && a20 == 1)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || (15 <= a8 && a17 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 679 SDslu, 40 SDs, 0 SdLazy, 1956 SolverSat, 519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=855occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 91 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1255 NumberOfCodeBlocks, 1255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1419 ConstructedInterpolants, 0 QuantifiedInterpolants, 987931 SizeOfPredicates, 1 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 899/991 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...