./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0455ba49274114922cfe1b7739d9cb0a89e6c868 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:58:11,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:58:11,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:58:11,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:58:11,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:58:11,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:58:11,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:58:11,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:58:11,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:58:11,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:58:11,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:58:11,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:58:11,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:58:11,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:58:11,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:58:11,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:58:11,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:58:11,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:58:11,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:58:11,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:58:11,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:58:11,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:58:11,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:58:11,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:58:11,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:58:11,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:58:11,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:58:11,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:58:11,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:58:11,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:58:11,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:58:11,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:58:11,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:58:11,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:58:11,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:58:11,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:58:11,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:58:11,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:58:11,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:58:11,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:58:11,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:58:11,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 16:58:11,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:58:11,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:58:11,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:58:11,577 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:58:11,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:58:11,577 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:58:11,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:58:11,578 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:58:11,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:58:11,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:58:11,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:58:11,578 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:58:11,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:58:11,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:58:11,579 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:58:11,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:58:11,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 16:58:11,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:58:11,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:58:11,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:58:11,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:58:11,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:58:11,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:58:11,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:58:11,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:58:11,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:58:11,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:58:11,584 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_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2020-12-09 16:58:11,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:58:11,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:58:11,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:58:11,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:58:11,764 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:58:11,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-12-09 16:58:11,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/data/33412e9bb/eac2a15d3d48491786a4e4fcff5f0ae2/FLAG069773cb7 [2020-12-09 16:58:12,171 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:58:12,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-12-09 16:58:12,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/data/33412e9bb/eac2a15d3d48491786a4e4fcff5f0ae2/FLAG069773cb7 [2020-12-09 16:58:12,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/data/33412e9bb/eac2a15d3d48491786a4e4fcff5f0ae2 [2020-12-09 16:58:12,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:58:12,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:58:12,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:58:12,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:58:12,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:58:12,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6479e4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12, skipping insertion in model container [2020-12-09 16:58:12,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:58:12,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:58:12,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:58:12,309 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:58:12,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:58:12,339 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:58:12,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12 WrapperNode [2020-12-09 16:58:12,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:58:12,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:58:12,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:58:12,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:58:12,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:58:12,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:58:12,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:58:12,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:58:12,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... [2020-12-09 16:58:12,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:58:12,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:58:12,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:58:12,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:58:12,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:58:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:58:12,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:58:12,558 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 16:58:12,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:58:12 BoogieIcfgContainer [2020-12-09 16:58:12,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:58:12,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:58:12,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:58:12,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:58:12,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:58:12" (1/3) ... [2020-12-09 16:58:12,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763759bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:58:12, skipping insertion in model container [2020-12-09 16:58:12,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:58:12" (2/3) ... [2020-12-09 16:58:12,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763759bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:58:12, skipping insertion in model container [2020-12-09 16:58:12,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:58:12" (3/3) ... [2020-12-09 16:58:12,566 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2020-12-09 16:58:12,575 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:58:12,577 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 16:58:12,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 16:58:12,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:58:12,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:58:12,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:58:12,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:58:12,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:58:12,602 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:58:12,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:58:12,602 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:58:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 16:58:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 16:58:12,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:12,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 16:58:12,615 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-12-09 16:58:12,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:12,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711935304] [2020-12-09 16:58:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:12,717 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 16:58:12,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711935304] [2020-12-09 16:58:12,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:58:12,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:58:12,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964142520] [2020-12-09 16:58:12,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:58:12,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:58:12,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,733 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-12-09 16:58:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:12,770 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-12-09 16:58:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:58:12,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 16:58:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:12,779 INFO L225 Difference]: With dead ends: 40 [2020-12-09 16:58:12,780 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 16:58:12,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 16:58:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-09 16:58:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 16:58:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-09 16:58:12,820 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2020-12-09 16:58:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:12,820 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-09 16:58:12,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:58:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-09 16:58:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 16:58:12,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:12,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 16:58:12,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:58:12,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-12-09 16:58:12,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:12,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891287384] [2020-12-09 16:58:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:12,840 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 16:58:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891287384] [2020-12-09 16:58:12,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:58:12,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 16:58:12,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316268883] [2020-12-09 16:58:12,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:58:12,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:58:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,844 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-12-09 16:58:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:12,868 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-12-09 16:58:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:58:12,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 16:58:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:12,869 INFO L225 Difference]: With dead ends: 21 [2020-12-09 16:58:12,870 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 16:58:12,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 16:58:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 16:58:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 16:58:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-09 16:58:12,875 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2020-12-09 16:58:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:12,875 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-09 16:58:12,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:58:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-09 16:58:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 16:58:12,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:12,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 16:58:12,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:58:12,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-12-09 16:58:12,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:12,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031551988] [2020-12-09 16:58:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:12,896 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 16:58:12,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031551988] [2020-12-09 16:58:12,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:58:12,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 16:58:12,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407147929] [2020-12-09 16:58:12,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:58:12,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:12,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:58:12,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,899 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2020-12-09 16:58:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:12,918 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-09 16:58:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:58:12,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 16:58:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:12,920 INFO L225 Difference]: With dead ends: 25 [2020-12-09 16:58:12,920 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 16:58:12,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 16:58:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-12-09 16:58:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 16:58:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 16:58:12,925 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2020-12-09 16:58:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:12,925 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 16:58:12,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:58:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 16:58:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 16:58:12,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:12,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:58:12,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:58:12,927 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:12,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2020-12-09 16:58:12,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:12,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700303238] [2020-12-09 16:58:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:12,951 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 16:58:12,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700303238] [2020-12-09 16:58:12,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:58:12,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 16:58:12,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784832327] [2020-12-09 16:58:12,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 16:58:12,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:12,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 16:58:12,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,954 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-12-09 16:58:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:12,965 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-12-09 16:58:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 16:58:12,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 16:58:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:12,966 INFO L225 Difference]: With dead ends: 18 [2020-12-09 16:58:12,966 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 16:58:12,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 16:58:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 16:58:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 16:58:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 16:58:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-09 16:58:12,971 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2020-12-09 16:58:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:12,971 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-09 16:58:12,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 16:58:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-09 16:58:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:58:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:12,972 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:58:12,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:58:12,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2020-12-09 16:58:12,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:12,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365522387] [2020-12-09 16:58:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365522387] [2020-12-09 16:58:13,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904019779] [2020-12-09 16:58:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:13,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:58:13,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:13,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:13,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062208727] [2020-12-09 16:58:13,125 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 16:58:13,125 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:13,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:13,136 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:13,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:13,319 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:13,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:13,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 2, 2] total 13 [2020-12-09 16:58:13,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244642061] [2020-12-09 16:58:13,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:58:13,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:13,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:58:13,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-09 16:58:13,449 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2020-12-09 16:58:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:13,640 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-12-09 16:58:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 16:58:13,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-09 16:58:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:13,641 INFO L225 Difference]: With dead ends: 41 [2020-12-09 16:58:13,641 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 16:58:13,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-12-09 16:58:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 16:58:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-12-09 16:58:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 16:58:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-12-09 16:58:13,646 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 10 [2020-12-09 16:58:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:13,647 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-12-09 16:58:13,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:58:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-12-09 16:58:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:58:13,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:13,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 16:58:13,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:13,849 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash -767237820, now seen corresponding path program 1 times [2020-12-09 16:58:13,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:13,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308546194] [2020-12-09 16:58:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:13,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308546194] [2020-12-09 16:58:13,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771255513] [2020-12-09 16:58:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:13,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:58:13,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:13,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2072360877] [2020-12-09 16:58:14,002 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 16:58:14,003 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:14,003 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:14,003 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:14,003 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:14,068 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:14,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:58:14,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:14,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2020-12-09 16:58:14,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054320960] [2020-12-09 16:58:14,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:58:14,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:14,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:58:14,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:58:14,163 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-12-09 16:58:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:14,204 INFO L93 Difference]: Finished difference Result 108 states and 136 transitions. [2020-12-09 16:58:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:58:14,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 16:58:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:14,205 INFO L225 Difference]: With dead ends: 108 [2020-12-09 16:58:14,205 INFO L226 Difference]: Without dead ends: 106 [2020-12-09 16:58:14,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:58:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-09 16:58:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-12-09 16:58:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-09 16:58:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2020-12-09 16:58:14,213 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 10 [2020-12-09 16:58:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:14,214 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2020-12-09 16:58:14,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:58:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2020-12-09 16:58:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 16:58:14,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:14,214 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:58:14,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-09 16:58:14,415 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1419016103, now seen corresponding path program 1 times [2020-12-09 16:58:14,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:14,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742612618] [2020-12-09 16:58:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742612618] [2020-12-09 16:58:14,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995142841] [2020-12-09 16:58:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:14,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:58:14,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1452842704] [2020-12-09 16:58:14,520 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:14,520 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:14,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:14,520 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:14,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:14,566 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:14,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:14,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2020-12-09 16:58:14,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210511351] [2020-12-09 16:58:14,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:58:14,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:14,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:58:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:58:14,569 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand 6 states. [2020-12-09 16:58:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:14,591 INFO L93 Difference]: Finished difference Result 176 states and 221 transitions. [2020-12-09 16:58:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:58:14,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 16:58:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:14,592 INFO L225 Difference]: With dead ends: 176 [2020-12-09 16:58:14,592 INFO L226 Difference]: Without dead ends: 88 [2020-12-09 16:58:14,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:58:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-09 16:58:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2020-12-09 16:58:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 16:58:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2020-12-09 16:58:14,598 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 12 [2020-12-09 16:58:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:14,598 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2020-12-09 16:58:14,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:58:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2020-12-09 16:58:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 16:58:14,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:14,599 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2020-12-09 16:58:14,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:14,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:14,800 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 2 times [2020-12-09 16:58:14,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:14,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463451099] [2020-12-09 16:58:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463451099] [2020-12-09 16:58:14,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604405003] [2020-12-09 16:58:14,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:14,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-09 16:58:14,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:14,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 16:58:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:14,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [454371182] [2020-12-09 16:58:14,946 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 16:58:14,946 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:14,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:14,946 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:14,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:14,987 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:15,118 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:58:15,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:15,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-12-09 16:58:15,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285941420] [2020-12-09 16:58:15,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 16:58:15,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:15,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 16:58:15,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-12-09 16:58:15,120 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 12 states. [2020-12-09 16:58:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:15,210 INFO L93 Difference]: Finished difference Result 338 states and 418 transitions. [2020-12-09 16:58:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 16:58:15,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-09 16:58:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:15,213 INFO L225 Difference]: With dead ends: 338 [2020-12-09 16:58:15,213 INFO L226 Difference]: Without dead ends: 336 [2020-12-09 16:58:15,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-12-09 16:58:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-12-09 16:58:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 264. [2020-12-09 16:58:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-09 16:58:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 310 transitions. [2020-12-09 16:58:15,237 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 310 transitions. Word has length 28 [2020-12-09 16:58:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:15,238 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 310 transitions. [2020-12-09 16:58:15,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 16:58:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 310 transitions. [2020-12-09 16:58:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 16:58:15,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:15,239 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1] [2020-12-09 16:58:15,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:15,440 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1113604998, now seen corresponding path program 2 times [2020-12-09 16:58:15,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:15,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085787664] [2020-12-09 16:58:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 16:58:15,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085787664] [2020-12-09 16:58:15,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896632471] [2020-12-09 16:58:15,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:15,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 16:58:15,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:15,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 16:58:15,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:15,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:15,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446147618] [2020-12-09 16:58:15,646 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:15,646 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:15,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:15,647 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:15,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:15,691 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:15,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:15,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2020-12-09 16:58:15,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280905813] [2020-12-09 16:58:15,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 16:58:15,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:15,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 16:58:15,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:58:15,693 INFO L87 Difference]: Start difference. First operand 264 states and 310 transitions. Second operand 12 states. [2020-12-09 16:58:15,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:15,751 INFO L93 Difference]: Finished difference Result 481 states and 572 transitions. [2020-12-09 16:58:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 16:58:15,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-09 16:58:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:15,754 INFO L225 Difference]: With dead ends: 481 [2020-12-09 16:58:15,754 INFO L226 Difference]: Without dead ends: 232 [2020-12-09 16:58:15,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:58:15,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-09 16:58:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2020-12-09 16:58:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-09 16:58:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2020-12-09 16:58:15,770 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 30 [2020-12-09 16:58:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:15,770 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2020-12-09 16:58:15,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 16:58:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2020-12-09 16:58:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-09 16:58:15,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:15,773 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2020-12-09 16:58:15,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:15,974 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 3 times [2020-12-09 16:58:15,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:15,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505739333] [2020-12-09 16:58:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:16,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505739333] [2020-12-09 16:58:16,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207407869] [2020-12-09 16:58:16,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:16,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 16:58:16,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:16,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 16:58:16,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:16,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:16,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451116807] [2020-12-09 16:58:16,429 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 16:58:16,429 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:16,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:16,429 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:16,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:16,473 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:16,680 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:58:16,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:16,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2020-12-09 16:58:16,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979433691] [2020-12-09 16:58:16,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 16:58:16,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:16,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 16:58:16,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2020-12-09 16:58:16,682 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand 24 states. [2020-12-09 16:58:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:16,827 INFO L93 Difference]: Finished difference Result 1497 states and 1852 transitions. [2020-12-09 16:58:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-09 16:58:16,827 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-12-09 16:58:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:16,833 INFO L225 Difference]: With dead ends: 1497 [2020-12-09 16:58:16,833 INFO L226 Difference]: Without dead ends: 1495 [2020-12-09 16:58:16,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 162 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2020-12-09 16:58:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-12-09 16:58:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 858. [2020-12-09 16:58:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-12-09 16:58:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1006 transitions. [2020-12-09 16:58:16,871 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1006 transitions. Word has length 64 [2020-12-09 16:58:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:16,871 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1006 transitions. [2020-12-09 16:58:16,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 16:58:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1006 transitions. [2020-12-09 16:58:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-09 16:58:16,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:16,874 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 5, 5, 5, 1, 1] [2020-12-09 16:58:17,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:17,075 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 312776330, now seen corresponding path program 3 times [2020-12-09 16:58:17,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:17,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272695006] [2020-12-09 16:58:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 115 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 16:58:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272695006] [2020-12-09 16:58:17,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905535933] [2020-12-09 16:58:17,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:17,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 16:58:17,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:17,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 16:58:17,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 115 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 16:58:17,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 115 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 16:58:17,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201965579] [2020-12-09 16:58:17,414 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:17,414 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:17,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:17,414 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:17,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:17,449 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:17,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:17,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2020-12-09 16:58:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217264031] [2020-12-09 16:58:17,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 16:58:17,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:17,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 16:58:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-09 16:58:17,450 INFO L87 Difference]: Start difference. First operand 858 states and 1006 transitions. Second operand 14 states. [2020-12-09 16:58:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:17,494 INFO L93 Difference]: Finished difference Result 1347 states and 1583 transitions. [2020-12-09 16:58:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 16:58:17,495 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-12-09 16:58:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:17,497 INFO L225 Difference]: With dead ends: 1347 [2020-12-09 16:58:17,497 INFO L226 Difference]: Without dead ends: 522 [2020-12-09 16:58:17,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-09 16:58:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-12-09 16:58:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2020-12-09 16:58:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-12-09 16:58:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 604 transitions. [2020-12-09 16:58:17,510 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 604 transitions. Word has length 66 [2020-12-09 16:58:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:17,510 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 604 transitions. [2020-12-09 16:58:17,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 16:58:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 604 transitions. [2020-12-09 16:58:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-09 16:58:17,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:17,511 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 12, 12, 12, 5, 5, 5, 1, 1] [2020-12-09 16:58:17,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-12-09 16:58:17,713 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash 856042534, now seen corresponding path program 4 times [2020-12-09 16:58:17,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551812330] [2020-12-09 16:58:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 212 proven. 420 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 16:58:17,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551812330] [2020-12-09 16:58:17,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112915798] [2020-12-09 16:58:17,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/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 16:58:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:17,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 16:58:17,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 212 proven. 420 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 16:58:17,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 212 proven. 420 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 16:58:18,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136975169] [2020-12-09 16:58:18,172 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:18,172 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:18,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:18,172 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:18,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:18,200 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:18,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:18,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2020-12-09 16:58:18,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741663549] [2020-12-09 16:58:18,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-09 16:58:18,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:18,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-09 16:58:18,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-12-09 16:58:18,202 INFO L87 Difference]: Start difference. First operand 522 states and 604 transitions. Second operand 28 states. [2020-12-09 16:58:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:18,289 INFO L93 Difference]: Finished difference Result 659 states and 767 transitions. [2020-12-09 16:58:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-09 16:58:18,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-12-09 16:58:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:18,290 INFO L225 Difference]: With dead ends: 659 [2020-12-09 16:58:18,290 INFO L226 Difference]: Without dead ends: 206 [2020-12-09 16:58:18,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-12-09 16:58:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-09 16:58:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-12-09 16:58:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-09 16:58:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2020-12-09 16:58:18,295 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 102 [2020-12-09 16:58:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:18,295 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2020-12-09 16:58:18,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-09 16:58:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2020-12-09 16:58:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-09 16:58:18,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:18,297 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2020-12-09 16:58:18,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-12-09 16:58:18,497 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 4 times [2020-12-09 16:58:18,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:18,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432855535] [2020-12-09 16:58:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:18,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432855535] [2020-12-09 16:58:18,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999711656] [2020-12-09 16:58:18,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:18,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 16:58:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:18,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:19,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640030510] [2020-12-09 16:58:19,467 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 16:58:19,467 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:19,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:19,467 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:19,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:19,493 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:19,967 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:58:19,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:19,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2020-12-09 16:58:19,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94615471] [2020-12-09 16:58:19,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-12-09 16:58:19,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:19,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-12-09 16:58:19,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2020-12-09 16:58:19,970 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand 48 states. [2020-12-09 16:58:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:20,227 INFO L93 Difference]: Finished difference Result 1191 states and 1496 transitions. [2020-12-09 16:58:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-09 16:58:20,228 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 136 [2020-12-09 16:58:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:20,233 INFO L225 Difference]: With dead ends: 1191 [2020-12-09 16:58:20,234 INFO L226 Difference]: Without dead ends: 1189 [2020-12-09 16:58:20,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 354 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2020-12-09 16:58:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-12-09 16:58:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1122. [2020-12-09 16:58:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-12-09 16:58:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1296 transitions. [2020-12-09 16:58:20,268 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1296 transitions. Word has length 136 [2020-12-09 16:58:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:20,269 INFO L481 AbstractCegarLoop]: Abstraction has 1122 states and 1296 transitions. [2020-12-09 16:58:20,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-12-09 16:58:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1296 transitions. [2020-12-09 16:58:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-09 16:58:20,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:20,271 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 26, 26, 26, 5, 5, 5, 1, 1] [2020-12-09 16:58:20,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-12-09 16:58:20,472 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1582353796, now seen corresponding path program 5 times [2020-12-09 16:58:20,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:20,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824284091] [2020-12-09 16:58:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 450 proven. 2002 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 16:58:20,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824284091] [2020-12-09 16:58:20,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953024222] [2020-12-09 16:58:20,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:20,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 16:58:20,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 16:58:20,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 708 proven. 88 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2020-12-09 16:58:21,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 708 proven. 88 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2020-12-09 16:58:21,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [590289539] [2020-12-09 16:58:21,373 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:21,373 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:21,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:21,373 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:21,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:21,398 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:21,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:21,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8, 8] total 43 [2020-12-09 16:58:21,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250629866] [2020-12-09 16:58:21,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-09 16:58:21,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-09 16:58:21,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-09 16:58:21,401 INFO L87 Difference]: Start difference. First operand 1122 states and 1296 transitions. Second operand 43 states. [2020-12-09 16:58:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:21,583 INFO L93 Difference]: Finished difference Result 2875 states and 3478 transitions. [2020-12-09 16:58:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-09 16:58:21,584 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-12-09 16:58:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:21,590 INFO L225 Difference]: With dead ends: 2875 [2020-12-09 16:58:21,590 INFO L226 Difference]: Without dead ends: 1906 [2020-12-09 16:58:21,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-09 16:58:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-12-09 16:58:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1893. [2020-12-09 16:58:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-09 16:58:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2198 transitions. [2020-12-09 16:58:21,636 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2198 transitions. Word has length 186 [2020-12-09 16:58:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:21,637 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2198 transitions. [2020-12-09 16:58:21,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-09 16:58:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2198 transitions. [2020-12-09 16:58:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-12-09 16:58:21,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:21,640 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 28, 28, 28, 14, 14, 14, 1, 1] [2020-12-09 16:58:21,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:21,841 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1915732927, now seen corresponding path program 6 times [2020-12-09 16:58:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:21,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027109421] [2020-12-09 16:58:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4341 backedges. 1510 proven. 2324 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-12-09 16:58:22,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027109421] [2020-12-09 16:58:22,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217506447] [2020-12-09 16:58:22,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:22,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 16:58:22,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-09 16:58:22,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4341 backedges. 1510 proven. 2324 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-12-09 16:58:22,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4341 backedges. 1510 proven. 2324 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-12-09 16:58:23,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291715160] [2020-12-09 16:58:23,212 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:23,212 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:23,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:23,213 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:23,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:23,241 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:23,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:23,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 52 [2020-12-09 16:58:23,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891351881] [2020-12-09 16:58:23,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-12-09 16:58:23,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-12-09 16:58:23,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-12-09 16:58:23,244 INFO L87 Difference]: Start difference. First operand 1893 states and 2198 transitions. Second operand 53 states. [2020-12-09 16:58:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:23,408 INFO L93 Difference]: Finished difference Result 2139 states and 2497 transitions. [2020-12-09 16:58:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-09 16:58:23,408 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 252 [2020-12-09 16:58:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:23,410 INFO L225 Difference]: With dead ends: 2139 [2020-12-09 16:58:23,410 INFO L226 Difference]: Without dead ends: 411 [2020-12-09 16:58:23,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-12-09 16:58:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-12-09 16:58:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2020-12-09 16:58:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-12-09 16:58:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 441 transitions. [2020-12-09 16:58:23,419 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 441 transitions. Word has length 252 [2020-12-09 16:58:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:23,419 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 441 transitions. [2020-12-09 16:58:23,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-12-09 16:58:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 441 transitions. [2020-12-09 16:58:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-12-09 16:58:23,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:23,422 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2020-12-09 16:58:23,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:23,623 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 5 times [2020-12-09 16:58:23,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:23,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209294567] [2020-12-09 16:58:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:24,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209294567] [2020-12-09 16:58:24,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122359896] [2020-12-09 16:58:24,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:24,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2020-12-09 16:58:24,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-09 16:58:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:24,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:26,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [473474832] [2020-12-09 16:58:26,907 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 16:58:26,907 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:26,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:26,907 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:26,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:26,929 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:58:28,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:58:28,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:28,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2020-12-09 16:58:28,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329120268] [2020-12-09 16:58:28,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-12-09 16:58:28,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-12-09 16:58:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2020-12-09 16:58:28,460 INFO L87 Difference]: Start difference. First operand 407 states and 441 transitions. Second operand 96 states. [2020-12-09 16:58:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:29,138 INFO L93 Difference]: Finished difference Result 4567 states and 5908 transitions. [2020-12-09 16:58:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-12-09 16:58:29,139 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 280 [2020-12-09 16:58:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:29,154 INFO L225 Difference]: With dead ends: 4567 [2020-12-09 16:58:29,154 INFO L226 Difference]: Without dead ends: 4565 [2020-12-09 16:58:29,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 738 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7509 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2020-12-09 16:58:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2020-12-09 16:58:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4419. [2020-12-09 16:58:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4419 states. [2020-12-09 16:58:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 5134 transitions. [2020-12-09 16:58:29,233 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 5134 transitions. Word has length 280 [2020-12-09 16:58:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:29,233 INFO L481 AbstractCegarLoop]: Abstraction has 4419 states and 5134 transitions. [2020-12-09 16:58:29,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-12-09 16:58:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 5134 transitions. [2020-12-09 16:58:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-12-09 16:58:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:29,236 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 64, 51, 51, 51, 14, 14, 14, 1, 1] [2020-12-09 16:58:29,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:29,436 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:29,438 INFO L82 PathProgramCache]: Analyzing trace with hash 88420000, now seen corresponding path program 7 times [2020-12-09 16:58:29,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:29,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606553758] [2020-12-09 16:58:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 0 proven. 10988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606553758] [2020-12-09 16:58:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033131713] [2020-12-09 16:58:30,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:31,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 66 conjunts are in the unsatisfiable core [2020-12-09 16:58:31,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 0 proven. 10988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:31,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 0 proven. 10988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:35,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421786252] [2020-12-09 16:58:35,355 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:58:35,355 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:58:35,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:58:35,356 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:58:35,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:58:35,381 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:58:35,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:58:35,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2020-12-09 16:58:35,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215662121] [2020-12-09 16:58:35,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 132 states [2020-12-09 16:58:35,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:35,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2020-12-09 16:58:35,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2020-12-09 16:58:35,388 INFO L87 Difference]: Start difference. First operand 4419 states and 5134 transitions. Second operand 132 states. [2020-12-09 16:58:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:37,368 INFO L93 Difference]: Finished difference Result 8363 states and 10352 transitions. [2020-12-09 16:58:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-12-09 16:58:37,369 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 390 [2020-12-09 16:58:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:37,395 INFO L225 Difference]: With dead ends: 8363 [2020-12-09 16:58:37,395 INFO L226 Difference]: Without dead ends: 8362 [2020-12-09 16:58:37,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2020-12-09 16:58:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8362 states. [2020-12-09 16:58:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8362 to 8283. [2020-12-09 16:58:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8283 states. [2020-12-09 16:58:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 9692 transitions. [2020-12-09 16:58:37,569 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 9692 transitions. Word has length 390 [2020-12-09 16:58:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:37,570 INFO L481 AbstractCegarLoop]: Abstraction has 8283 states and 9692 transitions. [2020-12-09 16:58:37,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 132 states. [2020-12-09 16:58:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 9692 transitions. [2020-12-09 16:58:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-12-09 16:58:37,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:37,581 INFO L422 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 1, 1] [2020-12-09 16:58:37,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-12-09 16:58:37,782 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash -507259975, now seen corresponding path program 6 times [2020-12-09 16:58:37,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:37,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840071202] [2020-12-09 16:58:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:40,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840071202] [2020-12-09 16:58:40,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123252868] [2020-12-09 16:58:40,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:40,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 16:58:40,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-09 16:58:40,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 21047 proven. 0 refuted. 0 times theorem prover too weak. 5461 trivial. 0 not checked. [2020-12-09 16:58:43,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:58:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 21047 proven. 0 refuted. 0 times theorem prover too weak. 5461 trivial. 0 not checked. [2020-12-09 16:58:44,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 16:58:44,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53, 53] imperfect sequences [95] total 148 [2020-12-09 16:58:44,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975354739] [2020-12-09 16:58:44,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-09 16:58:44,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:58:44,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-09 16:58:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6086, Invalid=15966, Unknown=0, NotChecked=0, Total=22052 [2020-12-09 16:58:44,155 INFO L87 Difference]: Start difference. First operand 8283 states and 9692 transitions. Second operand 54 states. [2020-12-09 16:58:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:58:44,385 INFO L93 Difference]: Finished difference Result 8767 states and 10256 transitions. [2020-12-09 16:58:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-09 16:58:44,386 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 568 [2020-12-09 16:58:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:58:44,389 INFO L225 Difference]: With dead ends: 8767 [2020-12-09 16:58:44,389 INFO L226 Difference]: Without dead ends: 787 [2020-12-09 16:58:44,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1229 GetRequests, 1081 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4982 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6086, Invalid=15966, Unknown=0, NotChecked=0, Total=22052 [2020-12-09 16:58:44,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-12-09 16:58:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2020-12-09 16:58:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-12-09 16:58:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 787 transitions. [2020-12-09 16:58:44,404 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 787 transitions. Word has length 568 [2020-12-09 16:58:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:58:44,404 INFO L481 AbstractCegarLoop]: Abstraction has 787 states and 787 transitions. [2020-12-09 16:58:44,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-12-09 16:58:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 787 transitions. [2020-12-09 16:58:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-12-09 16:58:44,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:58:44,409 INFO L422 BasicCegarLoop]: trace histogram [131, 130, 130, 80, 80, 80, 51, 51, 51, 1, 1] [2020-12-09 16:58:44,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:44,610 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:58:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:58:44,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1266566650, now seen corresponding path program 8 times [2020-12-09 16:58:44,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:58:44,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846960338] [2020-12-09 16:58:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:58:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:58:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 42800 backedges. 0 proven. 42800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:58:50,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846960338] [2020-12-09 16:58:50,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123386742] [2020-12-09 16:58:50,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:58:50,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2020-12-09 16:58:50,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:58:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-09 16:58:50,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:58:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 42800 backedges. 16310 proven. 19040 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2020-12-09 16:58:51,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:59:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 42800 backedges. 16310 proven. 19040 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2020-12-09 16:59:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1195470313] [2020-12-09 16:59:00,261 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:59:00,261 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:59:00,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:59:00,261 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:59:00,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:59:00,285 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:59:00,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:59:00,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 82, 82] total 213 [2020-12-09 16:59:00,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506964941] [2020-12-09 16:59:00,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 214 states [2020-12-09 16:59:00,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:59:00,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2020-12-09 16:59:00,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2020-12-09 16:59:00,291 INFO L87 Difference]: Start difference. First operand 787 states and 787 transitions. Second operand 214 states. [2020-12-09 16:59:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:05,201 INFO L93 Difference]: Finished difference Result 1280 states and 1361 transitions. [2020-12-09 16:59:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2020-12-09 16:59:05,202 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 786 [2020-12-09 16:59:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:05,207 INFO L225 Difference]: With dead ends: 1280 [2020-12-09 16:59:05,207 INFO L226 Difference]: Without dead ends: 1279 [2020-12-09 16:59:05,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1489 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2020-12-09 16:59:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-12-09 16:59:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2020-12-09 16:59:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-12-09 16:59:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1279 transitions. [2020-12-09 16:59:05,222 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1279 transitions. Word has length 786 [2020-12-09 16:59:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:05,223 INFO L481 AbstractCegarLoop]: Abstraction has 1279 states and 1279 transitions. [2020-12-09 16:59:05,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 214 states. [2020-12-09 16:59:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1279 transitions. [2020-12-09 16:59:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2020-12-09 16:59:05,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:05,238 INFO L422 BasicCegarLoop]: trace histogram [213, 212, 212, 162, 162, 162, 51, 51, 51, 1, 1] [2020-12-09 16:59:05,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:59:05,439 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 16:59:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:05,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1596908956, now seen corresponding path program 9 times [2020-12-09 16:59:05,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:59:05,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596464041] [2020-12-09 16:59:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:59:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:59:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 118732 backedges. 0 proven. 118732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:59:20,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596464041] [2020-12-09 16:59:20,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182472527] [2020-12-09 16:59:20,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:59:20,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 16:59:20,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 16:59:20,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 105 conjunts are in the unsatisfiable core [2020-12-09 16:59:20,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:59:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 118732 backedges. 70026 proven. 12752 refuted. 0 times theorem prover too weak. 35954 trivial. 0 not checked. [2020-12-09 16:59:26,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:59:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 118732 backedges. 70026 proven. 12752 refuted. 0 times theorem prover too weak. 35954 trivial. 0 not checked. [2020-12-09 16:59:28,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758170312] [2020-12-09 16:59:28,311 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:59:28,311 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:59:28,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:59:28,311 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:59:28,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:59:28,336 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 16:59:28,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 16:59:28,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 54, 54] total 267 [2020-12-09 16:59:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355212512] [2020-12-09 16:59:28,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 268 states [2020-12-09 16:59:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:59:28,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 268 interpolants. [2020-12-09 16:59:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24489, Invalid=47067, Unknown=0, NotChecked=0, Total=71556 [2020-12-09 16:59:28,344 INFO L87 Difference]: Start difference. First operand 1279 states and 1279 transitions. Second operand 268 states. [2020-12-09 16:59:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:43,647 INFO L93 Difference]: Finished difference Result 1279 states and 1279 transitions. [2020-12-09 16:59:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2020-12-09 16:59:43,648 INFO L78 Accepts]: Start accepts. Automaton has 268 states. Word has length 1278 [2020-12-09 16:59:43,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:43,648 INFO L225 Difference]: With dead ends: 1279 [2020-12-09 16:59:43,648 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:59:43,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2974 GetRequests, 2500 SyntacticMatches, 1 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33123 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=74508, Invalid=150642, Unknown=0, NotChecked=0, Total=225150 [2020-12-09 16:59:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:59:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:59:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:59:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:59:43,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1278 [2020-12-09 16:59:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:43,656 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:59:43,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 268 states. [2020-12-09 16:59:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:59:43,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:59:43,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:59:43,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:59:44,065 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 573 [2020-12-09 16:59:47,356 WARN L197 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 571 DAG size of output: 402 [2020-12-09 16:59:47,359 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 16:59:47,359 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:59:47,359 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 16:59:47,360 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 16:59:47,362 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse11 (<= ULTIMATE.start_main_~y~0 0)) (.cse3 (<= ULTIMATE.start_main_~y~0 26)) (.cse6 (<= ULTIMATE.start_main_~y~0 44)) (.cse20 (<= ULTIMATE.start_main_~y~0 7)) (.cse16 (<= ULTIMATE.start_main_~y~0 34)) (.cse8 (<= ULTIMATE.start_main_~y~0 11)) (.cse21 (<= ULTIMATE.start_main_~y~0 3)) (.cse18 (<= ULTIMATE.start_main_~y~0 45)) (.cse27 (<= ULTIMATE.start_main_~y~0 35)) (.cse22 (<= ULTIMATE.start_main_~y~0 33)) (.cse0 (<= ULTIMATE.start_main_~y~0 49)) (.cse17 (<= ULTIMATE.start_main_~y~0 23)) (.cse12 (<= ULTIMATE.start_main_~y~0 14)) (.cse31 (<= ULTIMATE.start_main_~y~0 17)) (.cse28 (<= ULTIMATE.start_main_~y~0 24)) (.cse14 (<= ULTIMATE.start_main_~y~0 30)) (.cse34 (<= ULTIMATE.start_main_~y~0 29)) (.cse36 (<= ULTIMATE.start_main_~y~0 8)) (.cse29 (<= ULTIMATE.start_main_~y~0 28)) (.cse15 (<= ULTIMATE.start_main_~y~0 32)) (.cse25 (<= ULTIMATE.start_main_~y~0 25)) (.cse38 (<= ULTIMATE.start_main_~y~0 39)) (.cse35 (<= ULTIMATE.start_main_~x~0 39)) (.cse7 (<= ULTIMATE.start_main_~x~0 44)) (.cse33 (<= ULTIMATE.start_main_~y~0 42)) (.cse9 (<= ULTIMATE.start_main_~y~0 18)) (.cse13 (<= ULTIMATE.start_main_~y~0 27)) (.cse4 (<= ULTIMATE.start_main_~y~0 20)) (.cse45 (<= ULTIMATE.start_main_~y~0 48)) (.cse49 (<= ULTIMATE.start_main_~y~0 13)) (.cse51 (<= ULTIMATE.start_main_~y~0 6)) (.cse19 (<= ULTIMATE.start_main_~x~0 45)) (.cse42 (<= ULTIMATE.start_main_~y~0 15)) (.cse48 (<= ULTIMATE.start_main_~y~0 19)) (.cse24 (<= ULTIMATE.start_main_~y~0 5)) (.cse30 (<= ULTIMATE.start_main_~y~0 41)) (.cse53 (<= ULTIMATE.start_main_~y~0 2)) (.cse46 (<= ULTIMATE.start_main_~y~0 46)) (.cse32 (<= ULTIMATE.start_main_~y~0 21)) (.cse44 (<= ULTIMATE.start_main_~y~0 37)) (.cse55 (<= ULTIMATE.start_main_~y~0 9)) (.cse40 (<= ULTIMATE.start_main_~y~0 50)) (.cse50 (<= ULTIMATE.start_main_~y~0 10)) (.cse23 (<= ULTIMATE.start_main_~y~0 40)) (.cse56 (<= ULTIMATE.start_main_~y~0 47)) (.cse26 (<= ULTIMATE.start_main_~y~0 1)) (.cse52 (<= ULTIMATE.start_main_~y~0 38)) (.cse54 (<= ULTIMATE.start_main_~y~0 4)) (.cse37 (<= ULTIMATE.start_main_~y~0 16)) (.cse57 (<= ULTIMATE.start_main_~y~0 36)) (.cse2 (<= ULTIMATE.start_main_~x~0 51)) (.cse58 (<= ULTIMATE.start_main_~y~0 12)) (.cse39 (<= ULTIMATE.start_main_~x~0 47)) (.cse41 (<= ULTIMATE.start_main_~y~0 22)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse10 (<= ULTIMATE.start_main_~x~0 43)) (.cse43 (<= ULTIMATE.start_main_~y~0 43)) (.cse47 (<= ULTIMATE.start_main_~y~0 31)) (.cse1 (<= 51 ULTIMATE.start_main_~x~0))) (or (and .cse0 (<= ULTIMATE.start_main_~x~0 53) .cse1) (and (<= ULTIMATE.start_main_~y~0 51) .cse2 .cse1) (and .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse1) (and .cse4 (<= ULTIMATE.start_main_~x~0 82) .cse1) (and (<= 44 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse7) (and .cse5 .cse8 (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0)) (and .cse5 (<= 18 ULTIMATE.start_main_~x~0) .cse9 .cse10) (and .cse11 (<= ULTIMATE.start_main_~x~0 102) .cse1) (and (<= ULTIMATE.start_main_~x~0 88) .cse12 .cse1) (and .cse13 (<= ULTIMATE.start_main_~x~0 75) .cse1) (and .cse5 .cse14 (<= 30 ULTIMATE.start_main_~x~0) .cse2) (and .cse5 .cse15 (<= 32 ULTIMATE.start_main_~x~0) .cse2) (and .cse5 .cse16 (<= 34 ULTIMATE.start_main_~x~0) .cse2) (and (<= 23 ULTIMATE.start_main_~x~0) .cse5 (<= ULTIMATE.start_main_~x~0 23) .cse17) (and .cse5 .cse18 (<= 45 ULTIMATE.start_main_~x~0) .cse19) (and .cse5 .cse20 (<= ULTIMATE.start_main_~x~0 46) (<= 7 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 99) .cse21 .cse1) (and (<= ULTIMATE.start_main_~x~0 69) .cse22 .cse1) (and (<= ULTIMATE.start_main_~x~0 62) .cse23 .cse1) (and .cse5 (<= 5 ULTIMATE.start_main_~x~0) .cse24 (<= ULTIMATE.start_main_~x~0 5)) (and (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 0) .cse11) (and .cse5 (<= 26 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 26) .cse3) (and (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse1) (and .cse6 (<= ULTIMATE.start_main_~x~0 58) .cse1) (and .cse25 (<= ULTIMATE.start_main_~x~0 77) .cse1) (and .cse20 (<= ULTIMATE.start_main_~x~0 95) .cse1) (and .cse26 (<= ULTIMATE.start_main_~x~0 101) .cse1) (and .cse27 (<= ULTIMATE.start_main_~x~0 67) .cse1) (and .cse16 (<= ULTIMATE.start_main_~x~0 68) .cse1) (and .cse8 (<= ULTIMATE.start_main_~x~0 91) .cse1) (and .cse5 (<= ULTIMATE.start_main_~x~0 24) .cse28 (<= 24 ULTIMATE.start_main_~x~0)) (and .cse5 (<= 3 ULTIMATE.start_main_~x~0) .cse21 (<= ULTIMATE.start_main_~x~0 3)) (and .cse18 (<= ULTIMATE.start_main_~x~0 57) .cse1) (and .cse5 (<= 28 ULTIMATE.start_main_~x~0) .cse2 .cse29) (and .cse5 (<= 41 ULTIMATE.start_main_~x~0) .cse30 .cse2) (and .cse5 (<= 35 ULTIMATE.start_main_~x~0) .cse27 .cse2) (and .cse5 (<= 17 ULTIMATE.start_main_~x~0) .cse31 (<= ULTIMATE.start_main_~x~0 17)) (and (<= 33 ULTIMATE.start_main_~x~0) .cse5 .cse2 .cse22) (and .cse0 .cse5 .cse2 (<= 49 ULTIMATE.start_main_~x~0)) (and (<= 21 ULTIMATE.start_main_~x~0) .cse5 .cse32 (<= ULTIMATE.start_main_~x~0 21)) (and .cse33 (<= ULTIMATE.start_main_~x~0 60) .cse1) (and .cse5 .cse34 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and (<= ULTIMATE.start_main_~x~0 79) .cse17 .cse1) (and .cse5 (<= 14 ULTIMATE.start_main_~x~0) .cse12 .cse35) (and .cse31 (<= ULTIMATE.start_main_~x~0 85) .cse1) (and (<= ULTIMATE.start_main_~x~0 94) .cse36 .cse1) (and (<= ULTIMATE.start_main_~x~0 78) .cse28 .cse1) (and (<= ULTIMATE.start_main_~x~0 86) .cse37 .cse1) (and .cse38 (<= ULTIMATE.start_main_~x~0 63) .cse1) (and .cse14 (<= ULTIMATE.start_main_~x~0 72) .cse1) (and (<= ULTIMATE.start_main_~x~0 73) .cse34 .cse1) (and .cse5 .cse36 .cse39 (<= 8 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 52) .cse40 .cse1) (and (<= ULTIMATE.start_main_~x~0 80) .cse1 .cse41) (and (<= ULTIMATE.start_main_~x~0 87) .cse42 .cse1) (and (<= ULTIMATE.start_main_~x~0 74) .cse29 .cse1) (and (<= ULTIMATE.start_main_~x~0 59) .cse43 .cse1) (and .cse15 (<= ULTIMATE.start_main_~x~0 70) .cse1) (and (<= ULTIMATE.start_main_~x~0 65) .cse44 .cse1) (and .cse5 .cse25 (<= ULTIMATE.start_main_~x~0 25) (<= 25 ULTIMATE.start_main_~x~0)) (and .cse5 (<= 39 ULTIMATE.start_main_~x~0) .cse38 .cse35) (and .cse5 .cse45 .cse2 (<= 48 ULTIMATE.start_main_~x~0)) (and .cse46 (<= 46 ULTIMATE.start_main_~x~0) .cse5 .cse2) (and .cse5 (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 31) .cse47) (and .cse5 (<= 19 ULTIMATE.start_main_~x~0) .cse48 .cse7) (and .cse5 .cse33 (<= 42 ULTIMATE.start_main_~x~0) .cse2) (and .cse5 (<= 13 ULTIMATE.start_main_~x~0) .cse49 (<= ULTIMATE.start_main_~x~0 38)) (and (<= ULTIMATE.start_main_~x~0 92) .cse50 .cse1) (and (<= ULTIMATE.start_main_~x~0 84) .cse9 .cse1) (and .cse5 (<= ULTIMATE.start_main_~x~0 50) (<= 27 ULTIMATE.start_main_~x~0) .cse13) (and .cse5 .cse4 (<= 20 ULTIMATE.start_main_~x~0) .cse19) (and (<= ULTIMATE.start_main_~x~0 96) .cse51 .cse1) (and .cse5 .cse52 (<= 38 ULTIMATE.start_main_~x~0) .cse2) (and (<= ULTIMATE.start_main_~x~0 54) .cse45 .cse1) (and (<= ULTIMATE.start_main_~x~0 89) .cse49 .cse1) (and .cse5 (<= 6 ULTIMATE.start_main_~x~0) .cse51 .cse19) (and .cse5 (<= ULTIMATE.start_main_~x~0 40) (<= 15 ULTIMATE.start_main_~x~0) .cse42) (and .cse5 (<= 2 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2) .cse53) (and (<= ULTIMATE.start_main_~x~0 83) .cse48 .cse1) (and .cse24 (<= ULTIMATE.start_main_~x~0 97) .cse1) (and (<= ULTIMATE.start_main_~x~0 61) .cse30 .cse1) (and (<= ULTIMATE.start_main_~x~0 100) .cse53 .cse1) (and .cse54 (<= ULTIMATE.start_main_~x~0 98) .cse1) (and .cse5 .cse55 (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 56) .cse46 .cse1) (and .cse32 (<= ULTIMATE.start_main_~x~0 81) .cse1) (and .cse56 (<= ULTIMATE.start_main_~x~0 55) .cse1) (and .cse5 .cse2 (<= 37 ULTIMATE.start_main_~x~0) .cse44) (and .cse55 (<= ULTIMATE.start_main_~x~0 93) .cse1) (and .cse5 .cse40 (<= 50 ULTIMATE.start_main_~x~0) .cse2) (and .cse5 .cse50 (<= ULTIMATE.start_main_~x~0 10) (<= 10 ULTIMATE.start_main_~x~0)) (and .cse5 .cse2 (<= 40 ULTIMATE.start_main_~x~0) .cse23) (and (<= 47 ULTIMATE.start_main_~x~0) .cse56 .cse5 .cse39) (and (<= ULTIMATE.start_main_~x~0 66) .cse57 .cse1) (and .cse5 (<= ULTIMATE.start_main_~x~0 12) .cse58 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse5 (<= ULTIMATE.start_main_~x~0 1) .cse26 (<= 1 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 64) .cse52 .cse1) (and (<= 4 ULTIMATE.start_main_~x~0) .cse5 .cse54 (<= ULTIMATE.start_main_~x~0 4)) (and .cse5 (<= 16 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 16) .cse37) (and .cse5 (<= 36 ULTIMATE.start_main_~x~0) .cse57 .cse2) (and (<= ULTIMATE.start_main_~x~0 90) .cse58 .cse1) (and .cse5 (<= 22 ULTIMATE.start_main_~x~0) .cse39 .cse41) (and .cse5 (<= 43 ULTIMATE.start_main_~x~0) .cse10 .cse43) (and (<= ULTIMATE.start_main_~x~0 71) .cse47 .cse1))) [2020-12-09 16:59:47,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:59:47 BoogieIcfgContainer [2020-12-09 16:59:47,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:59:47,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:59:47,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:59:47,398 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:59:47,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:58:12" (3/4) ... [2020-12-09 16:59:47,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:59:47,406 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 16:59:47,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 16:59:47,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:59:47,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55eb80d6-f1a2-41bd-86ac-e27bc8021431/bin/utaipan/witness.graphml [2020-12-09 16:59:47,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:59:47,432 INFO L168 Benchmark]: Toolchain (without parser) took 95240.16 ms. Allocated memory was 96.5 MB in the beginning and 752.9 MB in the end (delta: 656.4 MB). Free memory was 69.5 MB in the beginning and 545.1 MB in the end (delta: -475.7 MB). Peak memory consumption was 181.4 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,432 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:59:47,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.93 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 72.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.49 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:59:47,433 INFO L168 Benchmark]: Boogie Preprocessor took 11.71 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.9 MB in the end (delta: 916.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:59:47,433 INFO L168 Benchmark]: RCFGBuilder took 182.99 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 60.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,433 INFO L168 Benchmark]: TraceAbstraction took 94836.60 ms. Allocated memory was 96.5 MB in the beginning and 752.9 MB in the end (delta: 656.4 MB). Free memory was 59.6 MB in the beginning and 548.3 MB in the end (delta: -488.7 MB). Peak memory consumption was 513.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,434 INFO L168 Benchmark]: Witness Printer took 33.48 ms. Allocated memory is still 752.9 MB. Free memory was 548.3 MB in the beginning and 545.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 146.93 ms. Allocated memory is still 96.5 MB. Free memory was 69.3 MB in the beginning and 72.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.49 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.71 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.9 MB in the end (delta: 916.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 182.99 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 60.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94836.60 ms. Allocated memory was 96.5 MB in the beginning and 752.9 MB in the end (delta: 656.4 MB). Free memory was 59.6 MB in the beginning and 548.3 MB in the end (delta: -488.7 MB). Peak memory consumption was 513.3 MB. Max. memory is 16.1 GB. * Witness Printer took 33.48 ms. Allocated memory is still 752.9 MB. Free memory was 548.3 MB in the beginning and 545.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 49 && x <= 53) && 51 <= x) || ((y <= 51 && x <= 51) && 51 <= x)) || ((y <= 26 && x <= 76) && 51 <= x)) || ((y <= 20 && x <= 82) && 51 <= x)) || (((44 <= x && 1 <= y) && y <= 44) && x <= 44)) || (((1 <= y && y <= 11) && x <= 11) && 11 <= x)) || (((1 <= y && 18 <= x) && y <= 18) && x <= 43)) || ((y <= 0 && x <= 102) && 51 <= x)) || ((x <= 88 && y <= 14) && 51 <= x)) || ((y <= 27 && x <= 75) && 51 <= x)) || (((1 <= y && y <= 30) && 30 <= x) && x <= 51)) || (((1 <= y && y <= 32) && 32 <= x) && x <= 51)) || (((1 <= y && y <= 34) && 34 <= x) && x <= 51)) || (((23 <= x && 1 <= y) && x <= 23) && y <= 23)) || (((1 <= y && y <= 45) && 45 <= x) && x <= 45)) || (((1 <= y && y <= 7) && x <= 46) && 7 <= x)) || ((x <= 99 && y <= 3) && 51 <= x)) || ((x <= 69 && y <= 33) && 51 <= x)) || ((x <= 62 && y <= 40) && 51 <= x)) || (((1 <= y && 5 <= x) && y <= 5) && x <= 5)) || (((0 <= y && 0 <= x) && x <= 0) && y <= 0)) || (((1 <= y && 26 <= x) && x <= 26) && y <= 26)) || ((y + 1 <= 0 && x <= 103) && 51 <= x)) || ((y <= 44 && x <= 58) && 51 <= x)) || ((y <= 25 && x <= 77) && 51 <= x)) || ((y <= 7 && x <= 95) && 51 <= x)) || ((y <= 1 && x <= 101) && 51 <= x)) || ((y <= 35 && x <= 67) && 51 <= x)) || ((y <= 34 && x <= 68) && 51 <= x)) || ((y <= 11 && x <= 91) && 51 <= x)) || (((1 <= y && x <= 24) && y <= 24) && 24 <= x)) || (((1 <= y && 3 <= x) && y <= 3) && x <= 3)) || ((y <= 45 && x <= 57) && 51 <= x)) || (((1 <= y && 28 <= x) && x <= 51) && y <= 28)) || (((1 <= y && 41 <= x) && y <= 41) && x <= 51)) || (((1 <= y && 35 <= x) && y <= 35) && x <= 51)) || (((1 <= y && 17 <= x) && y <= 17) && x <= 17)) || (((33 <= x && 1 <= y) && x <= 51) && y <= 33)) || (((y <= 49 && 1 <= y) && x <= 51) && 49 <= x)) || (((21 <= x && 1 <= y) && y <= 21) && x <= 21)) || ((y <= 42 && x <= 60) && 51 <= x)) || (((1 <= y && y <= 29) && 29 <= x) && x <= 29)) || ((x <= 79 && y <= 23) && 51 <= x)) || (((1 <= y && 14 <= x) && y <= 14) && x <= 39)) || ((y <= 17 && x <= 85) && 51 <= x)) || ((x <= 94 && y <= 8) && 51 <= x)) || ((x <= 78 && y <= 24) && 51 <= x)) || ((x <= 86 && y <= 16) && 51 <= x)) || ((y <= 39 && x <= 63) && 51 <= x)) || ((y <= 30 && x <= 72) && 51 <= x)) || ((x <= 73 && y <= 29) && 51 <= x)) || (((1 <= y && y <= 8) && x <= 47) && 8 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 80 && 51 <= x) && y <= 22)) || ((x <= 87 && y <= 15) && 51 <= x)) || ((x <= 74 && y <= 28) && 51 <= x)) || ((x <= 59 && y <= 43) && 51 <= x)) || ((y <= 32 && x <= 70) && 51 <= x)) || ((x <= 65 && y <= 37) && 51 <= x)) || (((1 <= y && y <= 25) && x <= 25) && 25 <= x)) || (((1 <= y && 39 <= x) && y <= 39) && x <= 39)) || (((1 <= y && y <= 48) && x <= 51) && 48 <= x)) || (((y <= 46 && 46 <= x) && 1 <= y) && x <= 51)) || (((1 <= y && 31 <= x) && x <= 31) && y <= 31)) || (((1 <= y && 19 <= x) && y <= 19) && x <= 44)) || (((1 <= y && y <= 42) && 42 <= x) && x <= 51)) || (((1 <= y && 13 <= x) && y <= 13) && x <= 38)) || ((x <= 92 && y <= 10) && 51 <= x)) || ((x <= 84 && y <= 18) && 51 <= x)) || (((1 <= y && x <= 50) && 27 <= x) && y <= 27)) || (((1 <= y && y <= 20) && 20 <= x) && x <= 45)) || ((x <= 96 && y <= 6) && 51 <= x)) || (((1 <= y && y <= 38) && 38 <= x) && x <= 51)) || ((x <= 54 && y <= 48) && 51 <= x)) || ((x <= 89 && y <= 13) && 51 <= x)) || (((1 <= y && 6 <= x) && y <= 6) && x <= 45)) || (((1 <= y && x <= 40) && 15 <= x) && y <= 15)) || (((1 <= y && 2 <= x) && x <= 2) && y <= 2)) || ((x <= 83 && y <= 19) && 51 <= x)) || ((y <= 5 && x <= 97) && 51 <= x)) || ((x <= 61 && y <= 41) && 51 <= x)) || ((x <= 100 && y <= 2) && 51 <= x)) || ((y <= 4 && x <= 98) && 51 <= x)) || (((1 <= y && y <= 9) && x <= 9) && 9 <= x)) || ((x <= 56 && y <= 46) && 51 <= x)) || ((y <= 21 && x <= 81) && 51 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || (((1 <= y && x <= 51) && 37 <= x) && y <= 37)) || ((y <= 9 && x <= 93) && 51 <= x)) || (((1 <= y && y <= 50) && 50 <= x) && x <= 51)) || (((1 <= y && y <= 10) && x <= 10) && 10 <= x)) || (((1 <= y && x <= 51) && 40 <= x) && y <= 40)) || (((47 <= x && y <= 47) && 1 <= y) && x <= 47)) || ((x <= 66 && y <= 36) && 51 <= x)) || (((1 <= y && x <= 12) && y <= 12) && 12 <= x)) || (((1 <= y && x <= 1) && y <= 1) && 1 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || (((4 <= x && 1 <= y) && y <= 4) && x <= 4)) || (((1 <= y && 16 <= x) && x <= 16) && y <= 16)) || (((1 <= y && 36 <= x) && y <= 36) && x <= 51)) || ((x <= 90 && y <= 12) && 51 <= x)) || (((1 <= y && 22 <= x) && x <= 47) && y <= 22)) || (((1 <= y && 43 <= x) && x <= 43) && y <= 43)) || ((x <= 71 && y <= 31) && 51 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 91.2s, OverallIterations: 20, TraceHistogramMax: 213, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 337 SDtfs, 7112 SDslu, 3457 SDs, 0 SdLazy, 16528 SolverSat, 1584 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9789 GetRequests, 8364 SyntacticMatches, 93 SemanticMatches, 1332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48434 ImplicationChecksByTransitivity, 57.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8283occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 1062 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 1196 HoareAnnotationTreeSize, 1 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 1719 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 55.0s InterpolantComputationTime, 8416 NumberOfCodeBlocks, 8284 NumberOfCodeBlocksAsserted, 179 NumberOfCheckSat, 12562 ConstructedInterpolants, 0 QuantifiedInterpolants, 21248306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6820 ConjunctsInSsa, 470 ConjunctsInUnsatCore, 52 InterpolantComputations, 6 PerfectInterpolantSequences, 325254/645027 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: OVERALL_TIME[ms]: 194, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 28, TOOLS_POST_TIME[ms]: 33, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 28, TOOLS_QUANTIFIERELIM_TIME[ms]: 25, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 5, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 45, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 47, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 57, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 8, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 90, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 90, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 93, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...