./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/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 418aff548e88686eba696c93dbdd36b46dcf2c98 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-a4ecdab [2020-11-28 07:38:34,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:34,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:34,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:34,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:34,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:34,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:34,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:34,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:34,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:34,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:34,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:34,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:34,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:34,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:34,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:34,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:34,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:34,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:34,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:34,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:34,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:34,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:34,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:34,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:34,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:34,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:34,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:34,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:34,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:34,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:34,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:34,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:34,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:34,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:34,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:34,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:34,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:34,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:34,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:34,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:34,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:34,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:34,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:34,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:34,753 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:34,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:34,754 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:34,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:34,755 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:34,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:34,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:34,756 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:34,757 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:34,757 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:34,757 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:34,758 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:34,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:34,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:34,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:34,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:34,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:34,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:34,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:34,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:34,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:34,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:34,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:34,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:34,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:34,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:34,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:34,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:34,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:34,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:34,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:34,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:34,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:34,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:34,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:34,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:34,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:34,767 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_5f178675-b154-4212-a129-0b1bfb663f42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418aff548e88686eba696c93dbdd36b46dcf2c98 [2020-11-28 07:38:35,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:35,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:35,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:35,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:35,121 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:35,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2020-11-28 07:38:35,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/data/0d9cb336e/4c915fca92354e6abd52cfe20e901192/FLAG4e5e48186 [2020-11-28 07:38:35,797 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:35,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2020-11-28 07:38:35,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/data/0d9cb336e/4c915fca92354e6abd52cfe20e901192/FLAG4e5e48186 [2020-11-28 07:38:36,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/data/0d9cb336e/4c915fca92354e6abd52cfe20e901192 [2020-11-28 07:38:36,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:36,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:36,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:36,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:36,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:36,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307a3428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36, skipping insertion in model container [2020-11-28 07:38:36,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:36,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:36,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:36,466 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:36,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:36,507 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:36,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36 WrapperNode [2020-11-28 07:38:36,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:36,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:36,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:36,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:36,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:36,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:36,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:36,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:36,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... [2020-11-28 07:38:36,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:36,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:36,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:36,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:36,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:37,366 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:37,367 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 07:38:37,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37 BoogieIcfgContainer [2020-11-28 07:38:37,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:37,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:37,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:37,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:37,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:36" (1/3) ... [2020-11-28 07:38:37,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1064ebc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:37, skipping insertion in model container [2020-11-28 07:38:37,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:36" (2/3) ... [2020-11-28 07:38:37,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1064ebc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:37, skipping insertion in model container [2020-11-28 07:38:37,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37" (3/3) ... [2020-11-28 07:38:37,381 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound1.c [2020-11-28 07:38:37,394 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:37,399 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:38:37,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:38:37,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:37,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:37,441 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:37,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:37,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:37,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:37,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:37,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:38:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:38:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:37,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:38:37,466 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash 100358031, now seen corresponding path program 1 times [2020-11-28 07:38:37,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:37,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663185423] [2020-11-28 07:38:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:37,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663185423] [2020-11-28 07:38:37,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:37,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:37,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792628416] [2020-11-28 07:38:37,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:38:37,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:38:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:38:37,705 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 07:38:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:37,721 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-28 07:38:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:38:37,723 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:38:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:37,736 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:38:37,736 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:38:37,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:38:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:38:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:38:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:38:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 07:38:37,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-28 07:38:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:37,790 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 07:38:37,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:38:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 07:38:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:38:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:37,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:38:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:37,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2020-11-28 07:38:37,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:37,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065522949] [2020-11-28 07:38:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:37,850 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:37,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170056931] [2020-11-28 07:38:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:37,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:38:37,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:38,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:38,070 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065522949] [2020-11-28 07:38:38,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170056931] [2020-11-28 07:38:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:38:38,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823881320] [2020-11-28 07:38:38,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:38:38,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:38:38,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:38,111 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-28 07:38:38,256 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-28 07:38:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:38,439 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-28 07:38:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:38:38,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 07:38:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:38,441 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:38:38,441 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:38:38,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:38:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:38:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2020-11-28 07:38:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:38:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 07:38:38,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-11-28 07:38:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:38,448 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 07:38:38,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:38:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 07:38:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:38,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:38,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:38,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:38:38,660 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:38,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1211487480, now seen corresponding path program 1 times [2020-11-28 07:38:38,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:38,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628551081] [2020-11-28 07:38:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:38,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:38,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250847282] [2020-11-28 07:38:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/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 [2020-11-28 07:38:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:38,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:38:38,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:38,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:38,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628551081] [2020-11-28 07:38:38,809 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:38,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250847282] [2020-11-28 07:38:38,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:38,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:38,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696957866] [2020-11-28 07:38:38,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:38,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:38,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:38,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:38,812 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-11-28 07:38:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:38,866 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 07:38:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:38,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:38:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:38,867 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:38:38,868 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:38:38,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:38:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:38:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:38:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 07:38:38,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2020-11-28 07:38:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:38,873 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 07:38:38,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 07:38:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:38:38,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:38,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:39,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:39,096 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:39,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:39,097 INFO L82 PathProgramCache]: Analyzing trace with hash -262222527, now seen corresponding path program 1 times [2020-11-28 07:38:39,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:39,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035849402] [2020-11-28 07:38:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:39,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:39,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162233228] [2020-11-28 07:38:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/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 [2020-11-28 07:38:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:39,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:38:39,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:39,247 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 07:38:39,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:38:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:39,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:39,415 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035849402] [2020-11-28 07:38:39,523 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162233228] [2020-11-28 07:38:39,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:39,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-11-28 07:38:39,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984891451] [2020-11-28 07:38:39,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:38:39,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:39,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:38:39,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:38:39,525 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 8 states. [2020-11-28 07:38:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:45,859 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-28 07:38:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:38:45,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-28 07:38:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:45,862 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:38:45,862 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:38:45,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:38:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:38:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-28 07:38:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:38:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 07:38:45,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-28 07:38:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:45,867 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 07:38:45,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:38:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 07:38:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:38:45,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:45,871 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:46,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:46,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1829393256, now seen corresponding path program 1 times [2020-11-28 07:38:46,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:46,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554464487] [2020-11-28 07:38:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:46,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:46,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392218540] [2020-11-28 07:38:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/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 [2020-11-28 07:38:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:46,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:46,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:46,220 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:38:46,221 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:46,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:46,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:46 BoogieIcfgContainer [2020-11-28 07:38:46,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:46,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:46,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:46,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:46,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:37" (3/4) ... [2020-11-28 07:38:46,463 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:46,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f178675-b154-4212-a129-0b1bfb663f42/bin/utaipan/witness.graphml [2020-11-28 07:38:46,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:46,533 INFO L168 Benchmark]: Toolchain (without parser) took 10374.98 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 54.1 MB in the beginning and 109.5 MB in the end (delta: -55.4 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,534 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 44.1 MB in the beginning and 44.0 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:46,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.04 ms. Allocated memory is still 86.0 MB. Free memory was 53.7 MB in the beginning and 63.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.42 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,536 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:46,548 INFO L168 Benchmark]: RCFGBuilder took 793.57 ms. Allocated memory is still 86.0 MB. Free memory was 60.9 MB in the beginning and 40.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,549 INFO L168 Benchmark]: TraceAbstraction took 9086.85 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 40.4 MB in the beginning and 61.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,550 INFO L168 Benchmark]: Witness Printer took 72.01 ms. Allocated memory is still 132.1 MB. Free memory was 61.0 MB in the beginning and 109.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:46,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 44.1 MB in the beginning and 44.0 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.04 ms. Allocated memory is still 86.0 MB. Free memory was 53.7 MB in the beginning and 63.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.42 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.05 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 60.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 793.57 ms. Allocated memory is still 86.0 MB. Free memory was 60.9 MB in the beginning and 40.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9086.85 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 40.4 MB in the beginning and 61.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Witness Printer took 72.01 ms. Allocated memory is still 132.1 MB. Free memory was 61.0 MB in the beginning and 109.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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++<1 [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 FALSE !(counter++<1) [L16] COND TRUE !(cond) VAL [counter=2] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 40 SDs, 0 SdLazy, 48 SolverSat, 14 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 923 SizeOfPredicates, 23 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...