./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/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 9aa4eed507109801754e8007929fb4ed79ffe649 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:53:08,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:53:08,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:53:08,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:53:08,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:53:08,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:53:08,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:53:08,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:53:08,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:53:08,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:53:08,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:53:08,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:53:08,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:53:08,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:53:08,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:53:08,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:53:08,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:53:08,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:53:08,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:53:08,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:53:08,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:53:08,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:53:08,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:53:08,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:53:08,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:53:08,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:53:08,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:53:08,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:53:08,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:53:08,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:53:08,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:53:08,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:53:08,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:53:08,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:53:08,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:53:08,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:53:08,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:53:08,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:53:08,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:53:08,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:53:08,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:53:08,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:53:08,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:53:08,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:53:08,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:53:08,794 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:53:08,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:53:08,794 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:53:08,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:53:08,795 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:53:08,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:53:08,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:53:08,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:53:08,795 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:53:08,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:53:08,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:53:08,796 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:53:08,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:53:08,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:53:08,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:53:08,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:53:08,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:53:08,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:53:08,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:53:08,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:53:08,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:53:08,798 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:53:08,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:53:08,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:53:08,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:53:08,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:53:08,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:53:08,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:53:08,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:53:08,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:53:08,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:53:08,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:53:08,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:53:08,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:53:08,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:53:08,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:53:08,801 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_5a031e9b-89df-4bf6-a805-c391f27d9952/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aa4eed507109801754e8007929fb4ed79ffe649 [2020-12-09 04:53:08,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:53:08,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:53:08,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:53:08,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:53:08,987 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:53:08,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2020-12-09 04:53:09,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/data/f7f64a4ea/b068a6f5bedc47ab8b61d8b80824edff/FLAG8b12919e5 [2020-12-09 04:53:09,399 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:53:09,399 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2020-12-09 04:53:09,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/data/f7f64a4ea/b068a6f5bedc47ab8b61d8b80824edff/FLAG8b12919e5 [2020-12-09 04:53:09,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/data/f7f64a4ea/b068a6f5bedc47ab8b61d8b80824edff [2020-12-09 04:53:09,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:53:09,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:53:09,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:53:09,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:53:09,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:53:09,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e0db7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09, skipping insertion in model container [2020-12-09 04:53:09,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:53:09,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:53:09,545 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2020-12-09 04:53:09,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:53:09,565 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:53:09,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2020-12-09 04:53:09,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:53:09,590 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:53:09,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09 WrapperNode [2020-12-09 04:53:09,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:53:09,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:53:09,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:53:09,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:53:09,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:53:09,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:53:09,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:53:09,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:53:09,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... [2020-12-09 04:53:09,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:53:09,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:53:09,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:53:09,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:53:09,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/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 [2020-12-09 04:53:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:53:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:53:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:53:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:53:09,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:53:09,948 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 04:53:09,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:09 BoogieIcfgContainer [2020-12-09 04:53:09,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:53:09,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:53:09,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:53:09,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:53:09,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:53:09" (1/3) ... [2020-12-09 04:53:09,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d514048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:53:09, skipping insertion in model container [2020-12-09 04:53:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:53:09" (2/3) ... [2020-12-09 04:53:09,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d514048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:53:09, skipping insertion in model container [2020-12-09 04:53:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:09" (3/3) ... [2020-12-09 04:53:09,957 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2020-12-09 04:53:09,970 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:53:09,972 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 04:53:09,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 04:53:10,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:53:10,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:53:10,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:53:10,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:53:10,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:53:10,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:53:10,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:53:10,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:53:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 04:53:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:53:10,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:10,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:53:10,019 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:10,023 INFO L82 PathProgramCache]: Analyzing trace with hash 98480205, now seen corresponding path program 1 times [2020-12-09 04:53:10,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:10,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197789018] [2020-12-09 04:53:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:10,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197789018] [2020-12-09 04:53:10,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:53:10,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:53:10,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011393721] [2020-12-09 04:53:10,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:53:10,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:10,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:53:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:53:10,179 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 04:53:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:10,193 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-12-09 04:53:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:53:10,194 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 04:53:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:10,202 INFO L225 Difference]: With dead ends: 25 [2020-12-09 04:53:10,202 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 04:53:10,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:53:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 04:53:10,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 04:53:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 04:53:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 04:53:10,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-12-09 04:53:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:10,233 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 04:53:10,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:53:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 04:53:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:53:10,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:10,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:53:10,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:53:10,234 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash 97621232, now seen corresponding path program 1 times [2020-12-09 04:53:10,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:10,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287537474] [2020-12-09 04:53:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:10,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:10,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94455984] [2020-12-09 04:53:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/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 [2020-12-09 04:53:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:10,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 04:53:10,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:10,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:10,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287537474] [2020-12-09 04:53:10,391 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:10,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94455984] [2020-12-09 04:53:10,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:53:10,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 04:53:10,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106632133] [2020-12-09 04:53:10,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 04:53:10,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:10,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 04:53:10,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:53:10,395 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2020-12-09 04:53:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:10,456 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-09 04:53:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 04:53:10,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 04:53:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:10,457 INFO L225 Difference]: With dead ends: 20 [2020-12-09 04:53:10,458 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 04:53:10,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 04:53:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 04:53:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2020-12-09 04:53:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 04:53:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 04:53:10,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-12-09 04:53:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:10,463 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 04:53:10,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 04:53:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 04:53:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:53:10,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:10,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:53:10,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 04:53:10,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:10,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1268746775, now seen corresponding path program 1 times [2020-12-09 04:53:10,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:10,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75279130] [2020-12-09 04:53:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:10,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547976266] [2020-12-09 04:53:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:10,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:53:10,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:10,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:10,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75279130] [2020-12-09 04:53:10,876 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:10,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547976266] [2020-12-09 04:53:10,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:53:10,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 04:53:10,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872321142] [2020-12-09 04:53:10,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 04:53:10,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:10,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 04:53:10,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:53:10,879 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2020-12-09 04:53:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:10,900 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-09 04:53:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 04:53:10,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 04:53:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:10,902 INFO L225 Difference]: With dead ends: 23 [2020-12-09 04:53:10,902 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 04:53:10,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 04:53:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 04:53:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-12-09 04:53:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 04:53:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 04:53:10,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-09 04:53:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:10,908 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 04:53:10,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 04:53:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 04:53:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:53:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:10,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:53:11,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:11,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash 546169794, now seen corresponding path program 1 times [2020-12-09 04:53:11,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:11,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9495843] [2020-12-09 04:53:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:11,130 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:11,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322966828] [2020-12-09 04:53:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 04:53:11,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:11,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:11,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9495843] [2020-12-09 04:53:11,271 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:11,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322966828] [2020-12-09 04:53:11,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:53:11,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-09 04:53:11,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505866703] [2020-12-09 04:53:11,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 04:53:11,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:11,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 04:53:11,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-09 04:53:11,273 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 11 states. [2020-12-09 04:53:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:11,350 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 04:53:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:53:11,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2020-12-09 04:53:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:11,351 INFO L225 Difference]: With dead ends: 19 [2020-12-09 04:53:11,351 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 04:53:11,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 04:53:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 04:53:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 04:53:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 04:53:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 04:53:11,355 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 04:53:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:11,355 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 04:53:11,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 04:53:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 04:53:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 04:53:11,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:11,356 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 04:53:11,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:11,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:11,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1998402165, now seen corresponding path program 1 times [2020-12-09 04:53:11,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:11,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691699921] [2020-12-09 04:53:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:11,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:11,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696760605] [2020-12-09 04:53:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:11,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 04:53:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:11,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:11,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691699921] [2020-12-09 04:53:11,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:11,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696760605] [2020-12-09 04:53:11,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [62457483] [2020-12-09 04:53:11,881 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 04:53:11,881 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:53:11,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:53:11,888 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:53:11,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:53:11,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:53:12,327 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:53:12,505 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-09 04:53:12,832 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-09 04:53:12,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:12,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 04:53:12,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-09 04:53:12,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451882223] [2020-12-09 04:53:12,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 04:53:12,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:12,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 04:53:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-12-09 04:53:12,936 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2020-12-09 04:53:13,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:13,006 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-09 04:53:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 04:53:13,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 04:53:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:13,007 INFO L225 Difference]: With dead ends: 35 [2020-12-09 04:53:13,007 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 04:53:13,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2020-12-09 04:53:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 04:53:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 04:53:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 04:53:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-12-09 04:53:13,015 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 14 [2020-12-09 04:53:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:13,015 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-12-09 04:53:13,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 04:53:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-12-09 04:53:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 04:53:13,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:13,016 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2020-12-09 04:53:13,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:13,218 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 652162767, now seen corresponding path program 2 times [2020-12-09 04:53:13,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:13,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109336184] [2020-12-09 04:53:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:13,261 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:13,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157788873] [2020-12-09 04:53:13,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:13,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-09 04:53:13,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 04:53:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 04:53:13,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:13,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:13,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109336184] [2020-12-09 04:53:13,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:13,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157788873] [2020-12-09 04:53:13,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604172010] [2020-12-09 04:53:13,558 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 04:53:13,558 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:53:13,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:53:13,559 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:53:13,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:53:13,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:53:13,923 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:53:14,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:14,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 04:53:14,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-09 04:53:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068369514] [2020-12-09 04:53:14,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 04:53:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 04:53:14,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-12-09 04:53:14,411 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 18 states. [2020-12-09 04:53:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:14,558 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-09 04:53:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-09 04:53:14,559 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 30 [2020-12-09 04:53:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:14,559 INFO L225 Difference]: With dead ends: 67 [2020-12-09 04:53:14,560 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 04:53:14,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1040, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 04:53:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 04:53:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-09 04:53:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 04:53:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-12-09 04:53:14,568 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 30 [2020-12-09 04:53:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:14,568 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-12-09 04:53:14,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 04:53:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-12-09 04:53:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-09 04:53:14,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:14,570 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2020-12-09 04:53:14,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-09 04:53:14,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash -43060905, now seen corresponding path program 3 times [2020-12-09 04:53:14,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:14,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093380648] [2020-12-09 04:53:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:14,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:14,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375139818] [2020-12-09 04:53:14,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:14,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 04:53:14,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 04:53:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-09 04:53:14,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:15,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:15,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093380648] [2020-12-09 04:53:15,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:15,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375139818] [2020-12-09 04:53:15,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [588567433] [2020-12-09 04:53:15,307 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 04:53:15,307 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:53:15,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:53:15,307 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:53:15,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:53:15,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:53:15,507 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:53:16,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:16,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 04:53:16,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-12-09 04:53:16,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864163897] [2020-12-09 04:53:16,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-09 04:53:16,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-09 04:53:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=1113, Unknown=0, NotChecked=0, Total=1640 [2020-12-09 04:53:16,020 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 34 states. [2020-12-09 04:53:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:16,483 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2020-12-09 04:53:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-09 04:53:16,484 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 62 [2020-12-09 04:53:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:16,485 INFO L225 Difference]: With dead ends: 131 [2020-12-09 04:53:16,485 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 04:53:16,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1470, Invalid=3360, Unknown=0, NotChecked=0, Total=4830 [2020-12-09 04:53:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 04:53:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-09 04:53:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 04:53:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2020-12-09 04:53:16,502 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 62 [2020-12-09 04:53:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:16,502 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2020-12-09 04:53:16,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-09 04:53:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2020-12-09 04:53:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-09 04:53:16,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:16,505 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2020-12-09 04:53:16,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:16,707 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1163262361, now seen corresponding path program 4 times [2020-12-09 04:53:16,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:16,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281637790] [2020-12-09 04:53:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:16,743 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:16,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539568734] [2020-12-09 04:53:16,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:53:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-09 04:53:16,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:53:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:17,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:53:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:53:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281637790] [2020-12-09 04:53:17,928 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539568734] [2020-12-09 04:53:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1332555964] [2020-12-09 04:53:17,930 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 04:53:17,930 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:53:17,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:53:17,930 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:53:17,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:53:17,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 04:53:18,162 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:53:18,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:53:18,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 04:53:18,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 53 [2020-12-09 04:53:18,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006899061] [2020-12-09 04:53:18,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-09 04:53:18,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:53:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-09 04:53:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=2303, Unknown=0, NotChecked=0, Total=3660 [2020-12-09 04:53:18,730 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 54 states. [2020-12-09 04:53:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:53:19,791 INFO L93 Difference]: Finished difference Result 211 states and 230 transitions. [2020-12-09 04:53:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-12-09 04:53:19,791 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 126 [2020-12-09 04:53:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:53:19,793 INFO L225 Difference]: With dead ends: 211 [2020-12-09 04:53:19,793 INFO L226 Difference]: Without dead ends: 207 [2020-12-09 04:53:19,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3936, Invalid=8054, Unknown=0, NotChecked=0, Total=11990 [2020-12-09 04:53:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-09 04:53:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-12-09 04:53:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-09 04:53:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2020-12-09 04:53:19,812 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 126 [2020-12-09 04:53:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:53:19,813 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2020-12-09 04:53:19,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-09 04:53:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2020-12-09 04:53:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-12-09 04:53:19,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:53:19,815 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 1, 1, 1, 1, 1] [2020-12-09 04:53:20,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:20,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:53:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:53:20,018 INFO L82 PathProgramCache]: Analyzing trace with hash -267408197, now seen corresponding path program 5 times [2020-12-09 04:53:20,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:53:20,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611193778] [2020-12-09 04:53:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:53:20,052 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:53:20,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304320944] [2020-12-09 04:53:20,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:53:20,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2020-12-09 04:53:20,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-09 04:53:20,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:53:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:53:21,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:53:21,703 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 04:53:21,703 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:53:21,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-12-09 04:53:22,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:53:22 BoogieIcfgContainer [2020-12-09 04:53:22,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:53:22,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:53:22,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:53:22,005 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:53:22,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:53:09" (3/4) ... [2020-12-09 04:53:22,007 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 04:53:22,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a031e9b-89df-4bf6-a805-c391f27d9952/bin/utaipan/witness.graphml [2020-12-09 04:53:22,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:53:22,095 INFO L168 Benchmark]: Toolchain (without parser) took 12676.75 ms. Allocated memory was 94.4 MB in the beginning and 195.0 MB in the end (delta: 100.7 MB). Free memory was 64.1 MB in the beginning and 86.0 MB in the end (delta: -21.9 MB). Peak memory consumption was 79.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:53:22,095 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 94.4 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:53:22,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.81 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 72.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:53:22,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.97 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 70.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:53:22,096 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:53:22,096 INFO L168 Benchmark]: RCFGBuilder took 307.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 49.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:53:22,096 INFO L168 Benchmark]: TraceAbstraction took 12053.50 ms. Allocated memory was 94.4 MB in the beginning and 195.0 MB in the end (delta: 100.7 MB). Free memory was 48.9 MB in the beginning and 102.8 MB in the end (delta: -53.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:53:22,097 INFO L168 Benchmark]: Witness Printer took 88.91 ms. Allocated memory is still 195.0 MB. Free memory was 102.8 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 04:53:22,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 94.4 MB. Free memory is still 60.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.81 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 72.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.97 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 70.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 307.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 49.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12053.50 ms. Allocated memory was 94.4 MB in the beginning and 195.0 MB in the end (delta: 100.7 MB). Free memory was 48.9 MB in the beginning and 102.8 MB in the end (delta: -53.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 88.91 ms. Allocated memory is still 195.0 MB. Free memory was 102.8 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=11] [L36] EXPR counter++ VAL [counter=12] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12] [L36] EXPR counter++ VAL [counter=13] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=13] [L36] EXPR counter++ VAL [counter=14] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=14] [L36] EXPR counter++ VAL [counter=15] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=15] [L36] EXPR counter++ VAL [counter=16] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=16] [L36] EXPR counter++ VAL [counter=17] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=17] [L36] EXPR counter++ VAL [counter=18] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18] [L36] EXPR counter++ VAL [counter=19] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=19] [L36] EXPR counter++ VAL [counter=20] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=20] [L36] EXPR counter++ VAL [counter=21] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=21] [L36] EXPR counter++ VAL [counter=22] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=22] [L36] EXPR counter++ VAL [counter=23] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=23] [L36] EXPR counter++ VAL [counter=24] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=24] [L36] EXPR counter++ VAL [counter=25] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=25] [L36] EXPR counter++ VAL [counter=26] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=26] [L36] EXPR counter++ VAL [counter=27] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=27] [L36] EXPR counter++ VAL [counter=28] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=28] [L36] EXPR counter++ VAL [counter=29] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=29] [L36] EXPR counter++ VAL [counter=30] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=30] [L36] EXPR counter++ VAL [counter=31] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=31] [L36] EXPR counter++ VAL [counter=32] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=32] [L36] EXPR counter++ VAL [counter=33] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=33] [L36] EXPR counter++ VAL [counter=34] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=34] [L36] EXPR counter++ VAL [counter=35] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=35] [L36] EXPR counter++ VAL [counter=36] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=36] [L36] EXPR counter++ VAL [counter=37] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=37] [L36] EXPR counter++ VAL [counter=38] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=38] [L36] EXPR counter++ VAL [counter=39] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=39] [L36] EXPR counter++ VAL [counter=40] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=40] [L36] EXPR counter++ VAL [counter=41] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=41] [L36] EXPR counter++ VAL [counter=42] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=42] [L36] EXPR counter++ VAL [counter=43] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=43] [L36] EXPR counter++ VAL [counter=44] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=44] [L36] EXPR counter++ VAL [counter=45] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=45] [L36] EXPR counter++ VAL [counter=46] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=46] [L36] EXPR counter++ VAL [counter=47] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=47] [L36] EXPR counter++ VAL [counter=48] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=48] [L36] EXPR counter++ VAL [counter=49] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=49] [L36] EXPR counter++ VAL [counter=50] [L36] COND TRUE counter++<50 [L16] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=50] [L36] EXPR counter++ VAL [counter=51] [L36] COND FALSE !(counter++<50) [L16] COND TRUE !(cond) VAL [counter=51] [L18] reach_error() VAL [counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.9s, OverallIterations: 9, TraceHistogramMax: 51, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 100 SDslu, 339 SDs, 0 SdLazy, 285 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 824 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3594 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 462 NumberOfCodeBlocks, 462 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 120545 SizeOfPredicates, 74 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 0/4544 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...