./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.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_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:46:52,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:46:52,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:46:52,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:46:52,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:46:52,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:46:52,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:46:52,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:46:52,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:46:52,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:46:52,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:46:52,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:46:52,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:46:52,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:46:52,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:46:52,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:46:52,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:46:52,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:46:52,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:46:52,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:46:52,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:46:52,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:46:52,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:46:52,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:46:52,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:46:52,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:46:52,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:46:52,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:46:52,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:46:52,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:46:52,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:46:52,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:46:52,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:46:52,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:46:52,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:46:52,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:46:52,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:46:52,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:46:52,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:46:52,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:46:52,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:46:52,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 07:46:52,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:46:52,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:46:52,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:46:52,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:46:52,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:46:52,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:46:52,797 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:46:52,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:46:52,797 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:46:52,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:46:52,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:46:52,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:46:52,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:46:52,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:46:52,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:46:52,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:46:52,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:46:52,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:46:52,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:46:52,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:46:52,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:46:52,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:46:52,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:46:52,800 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_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2020-12-09 07:46:52,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:46:52,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:46:52,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:46:52,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:46:52,985 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:46:52,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-12-09 07:46:53,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/data/df3a6682f/1dc174818ba141c9a50e62a3ca7bbae6/FLAG166566a1f [2020-12-09 07:46:53,384 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:46:53,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-12-09 07:46:53,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/data/df3a6682f/1dc174818ba141c9a50e62a3ca7bbae6/FLAG166566a1f [2020-12-09 07:46:53,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/data/df3a6682f/1dc174818ba141c9a50e62a3ca7bbae6 [2020-12-09 07:46:53,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:46:53,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:46:53,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:46:53,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:46:53,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:46:53,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5636b886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53, skipping insertion in model container [2020-12-09 07:46:53,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:46:53,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:46:53,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:46:53,533 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:46:53,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:46:53,556 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:46:53,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53 WrapperNode [2020-12-09 07:46:53,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:46:53,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:46:53,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:46:53,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:46:53,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:46:53,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:46:53,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:46:53,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:46:53,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... [2020-12-09 07:46:53,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:46:53,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:46:53,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:46:53,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:46:53,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:46:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:46:53,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:46:53,804 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:46:53,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:46:53 BoogieIcfgContainer [2020-12-09 07:46:53,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:46:53,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:46:53,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:46:53,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:46:53,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:46:53" (1/3) ... [2020-12-09 07:46:53,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64430b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:46:53, skipping insertion in model container [2020-12-09 07:46:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:46:53" (2/3) ... [2020-12-09 07:46:53,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64430b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:46:53, skipping insertion in model container [2020-12-09 07:46:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:46:53" (3/3) ... [2020-12-09 07:46:53,812 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-12-09 07:46:53,823 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:46:53,825 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 07:46:53,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 07:46:53,852 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:46:53,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:46:53,852 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:46:53,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:46:53,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:46:53,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:46:53,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:46:53,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:46:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-09 07:46:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:46:53,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:53,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:46:53,867 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 29686488, now seen corresponding path program 1 times [2020-12-09 07:46:53,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:53,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727610] [2020-12-09 07:46:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:53,986 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 07:46:53,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727610] [2020-12-09 07:46:53,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:53,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:46:53,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221207270] [2020-12-09 07:46:53,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:53,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,007 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-12-09 07:46:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,053 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-12-09 07:46:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:46:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,060 INFO L225 Difference]: With dead ends: 66 [2020-12-09 07:46:54,060 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 07:46:54,062 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 07:46:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 07:46:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2020-12-09 07:46:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 07:46:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-12-09 07:46:54,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2020-12-09 07:46:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,087 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-12-09 07:46:54,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-09 07:46:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:46:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:46:54,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:46:54,088 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-12-09 07:46:54,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490923356] [2020-12-09 07:46:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,110 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 07:46:54,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490923356] [2020-12-09 07:46:54,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:54,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:46:54,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514630912] [2020-12-09 07:46:54,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:54,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,113 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2020-12-09 07:46:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,132 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-12-09 07:46:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:46:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,133 INFO L225 Difference]: With dead ends: 34 [2020-12-09 07:46:54,134 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 07:46:54,134 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 07:46:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 07:46:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-12-09 07:46:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 07:46:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-12-09 07:46:54,140 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2020-12-09 07:46:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-12-09 07:46:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-12-09 07:46:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:46:54,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:46:54,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:46:54,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash 920281212, now seen corresponding path program 1 times [2020-12-09 07:46:54,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276074769] [2020-12-09 07:46:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,169 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 07:46:54,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276074769] [2020-12-09 07:46:54,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:54,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:46:54,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147952363] [2020-12-09 07:46:54,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:54,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,172 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2020-12-09 07:46:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,197 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-12-09 07:46:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 07:46:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,198 INFO L225 Difference]: With dead ends: 45 [2020-12-09 07:46:54,199 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 07:46:54,199 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 07:46:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 07:46:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-09 07:46:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 07:46:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-12-09 07:46:54,206 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2020-12-09 07:46:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,206 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-12-09 07:46:54,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-12-09 07:46:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:46:54,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:46:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:46:54,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-12-09 07:46:54,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576885060] [2020-12-09 07:46:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,232 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 07:46:54,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576885060] [2020-12-09 07:46:54,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:54,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:46:54,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558533140] [2020-12-09 07:46:54,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:54,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,234 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 3 states. [2020-12-09 07:46:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,246 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-12-09 07:46:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 07:46:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,247 INFO L225 Difference]: With dead ends: 31 [2020-12-09 07:46:54,247 INFO L226 Difference]: Without dead ends: 30 [2020-12-09 07:46:54,248 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 07:46:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-09 07:46:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-09 07:46:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 07:46:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-12-09 07:46:54,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2020-12-09 07:46:54,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,253 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-12-09 07:46:54,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-12-09 07:46:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:46:54,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:54,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:46:54,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2020-12-09 07:46:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515819204] [2020-12-09 07:46:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,280 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 07:46:54,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515819204] [2020-12-09 07:46:54,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:54,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:46:54,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108584592] [2020-12-09 07:46:54,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:54,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,283 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-12-09 07:46:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,295 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-12-09 07:46:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 07:46:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,297 INFO L225 Difference]: With dead ends: 30 [2020-12-09 07:46:54,297 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 07:46:54,297 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 07:46:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 07:46:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 07:46:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 07:46:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-12-09 07:46:54,303 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2020-12-09 07:46:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,303 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-12-09 07:46:54,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-12-09 07:46:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:46:54,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:54,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:46:54,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,305 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2020-12-09 07:46:54,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431763325] [2020-12-09 07:46:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,328 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 07:46:54,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431763325] [2020-12-09 07:46:54,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:54,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:46:54,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835693551] [2020-12-09 07:46:54,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:46:54,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:46:54,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:46:54,331 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2020-12-09 07:46:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,341 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-12-09 07:46:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:46:54,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 07:46:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,343 INFO L225 Difference]: With dead ends: 29 [2020-12-09 07:46:54,343 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 07:46:54,343 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 07:46:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 07:46:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 07:46:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 07:46:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-09 07:46:54,349 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2020-12-09 07:46:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,349 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-09 07:46:54,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:46:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-09 07:46:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:46:54,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-12-09 07:46:54,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:46:54,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1321380767, now seen corresponding path program 1 times [2020-12-09 07:46:54,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:54,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671901055] [2020-12-09 07:46:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,383 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 07:46:54,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671901055] [2020-12-09 07:46:54,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269072001] [2020-12-09 07:46:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:46:54,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:54,447 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 07:46:54,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:54,467 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 07:46:54,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441474244] [2020-12-09 07:46:54,481 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 07:46:54,481 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:54,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:54,488 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:54,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:54,653 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:46:54,909 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:46:54,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:54,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-12-09 07:46:54,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188525083] [2020-12-09 07:46:54,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:46:54,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:46:54,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:46:54,911 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2020-12-09 07:46:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:54,955 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-12-09 07:46:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:46:54,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 07:46:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:54,957 INFO L225 Difference]: With dead ends: 81 [2020-12-09 07:46:54,957 INFO L226 Difference]: Without dead ends: 80 [2020-12-09 07:46:54,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:46:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-09 07:46:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 40. [2020-12-09 07:46:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 07:46:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-12-09 07:46:54,965 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 9 [2020-12-09 07:46:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:54,965 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-12-09 07:46:54,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:46:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-12-09 07:46:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:46:54,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:54,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:55,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 07:46:55,168 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2020-12-09 07:46:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:55,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385443737] [2020-12-09 07:46:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:55,240 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 07:46:55,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385443737] [2020-12-09 07:46:55,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:55,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:46:55,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588959724] [2020-12-09 07:46:55,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:46:55,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:55,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:46:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:46:55,245 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 4 states. [2020-12-09 07:46:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:55,338 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-12-09 07:46:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:46:55,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 07:46:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:55,339 INFO L225 Difference]: With dead ends: 72 [2020-12-09 07:46:55,339 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 07:46:55,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:46:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 07:46:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2020-12-09 07:46:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 07:46:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-12-09 07:46:55,344 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 10 [2020-12-09 07:46:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:55,344 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-12-09 07:46:55,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:46:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-12-09 07:46:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 07:46:55,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:55,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:55,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 07:46:55,345 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:55,345 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2020-12-09 07:46:55,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:55,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047751778] [2020-12-09 07:46:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:55,360 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 07:46:55,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047751778] [2020-12-09 07:46:55,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:55,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:46:55,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326163586] [2020-12-09 07:46:55,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:46:55,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:55,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:46:55,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:46:55,362 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 4 states. [2020-12-09 07:46:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:55,390 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-12-09 07:46:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:46:55,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 07:46:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:55,391 INFO L225 Difference]: With dead ends: 54 [2020-12-09 07:46:55,391 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 07:46:55,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:46:55,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 07:46:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-12-09 07:46:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 07:46:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-12-09 07:46:55,395 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 11 [2020-12-09 07:46:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:55,396 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-12-09 07:46:55,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:46:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-12-09 07:46:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:46:55,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:55,396 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:55,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 07:46:55,397 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2020-12-09 07:46:55,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:55,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780002031] [2020-12-09 07:46:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:55,413 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 07:46:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780002031] [2020-12-09 07:46:55,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244648260] [2020-12-09 07:46:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:55,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:46:55,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:55,448 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 07:46:55,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:55,464 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 07:46:55,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26112421] [2020-12-09 07:46:55,466 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 07:46:55,466 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:55,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:55,467 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:55,467 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:55,605 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:46:56,019 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:46:56,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:56,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-12-09 07:46:56,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955264719] [2020-12-09 07:46:56,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:46:56,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:46:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:46:56,020 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 6 states. [2020-12-09 07:46:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:56,050 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2020-12-09 07:46:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:46:56,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 07:46:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:56,051 INFO L225 Difference]: With dead ends: 118 [2020-12-09 07:46:56,051 INFO L226 Difference]: Without dead ends: 117 [2020-12-09 07:46:56,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:46:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-09 07:46:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2020-12-09 07:46:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-09 07:46:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-12-09 07:46:56,061 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 12 [2020-12-09 07:46:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:56,061 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-12-09 07:46:56,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:46:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-12-09 07:46:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:46:56,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:56,062 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:56,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-09 07:46:56,264 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash -930171701, now seen corresponding path program 1 times [2020-12-09 07:46:56,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:56,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906083981] [2020-12-09 07:46:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:46:56,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906083981] [2020-12-09 07:46:56,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:46:56,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:46:56,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619923459] [2020-12-09 07:46:56,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:46:56,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:46:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:46:56,349 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 4 states. [2020-12-09 07:46:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:56,428 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2020-12-09 07:46:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:46:56,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 07:46:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:56,431 INFO L225 Difference]: With dead ends: 94 [2020-12-09 07:46:56,431 INFO L226 Difference]: Without dead ends: 93 [2020-12-09 07:46:56,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:46:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-09 07:46:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-12-09 07:46:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 07:46:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2020-12-09 07:46:56,442 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 14 [2020-12-09 07:46:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:56,442 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2020-12-09 07:46:56,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:46:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2020-12-09 07:46:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:46:56,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:56,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:56,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-09 07:46:56,443 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash -541857789, now seen corresponding path program 1 times [2020-12-09 07:46:56,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:56,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180414837] [2020-12-09 07:46:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:56,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180414837] [2020-12-09 07:46:56,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116462198] [2020-12-09 07:46:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:56,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:46:56,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:56,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:56,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [139157172] [2020-12-09 07:46:56,537 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-12-09 07:46:56,537 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:56,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:56,538 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:56,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:56,694 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 07:46:56,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:56,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-12-09 07:46:56,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709969845] [2020-12-09 07:46:56,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:46:56,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:56,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:46:56,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:46:56,697 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand 6 states. [2020-12-09 07:46:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:56,747 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2020-12-09 07:46:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:46:56,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 07:46:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:56,749 INFO L225 Difference]: With dead ends: 142 [2020-12-09 07:46:56,749 INFO L226 Difference]: Without dead ends: 99 [2020-12-09 07:46:56,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:46:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-09 07:46:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-12-09 07:46:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-09 07:46:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2020-12-09 07:46:56,758 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 16 [2020-12-09 07:46:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:56,758 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2020-12-09 07:46:56,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:46:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2020-12-09 07:46:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:46:56,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:56,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:56,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-09 07:46:56,960 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash -735760783, now seen corresponding path program 2 times [2020-12-09 07:46:56,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:56,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620918638] [2020-12-09 07:46:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:46:57,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620918638] [2020-12-09 07:46:57,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996179067] [2020-12-09 07:46:57,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:57,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 07:46:57,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:46:57,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:46:57,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:46:57,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:46:57,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767855403] [2020-12-09 07:46:57,116 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-12-09 07:46:57,116 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:57,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:57,117 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:57,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:57,226 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 07:46:57,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:57,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2020-12-09 07:46:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467277841] [2020-12-09 07:46:57,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:46:57,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:46:57,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:46:57,228 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand 4 states. [2020-12-09 07:46:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:57,250 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2020-12-09 07:46:57,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:46:57,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 07:46:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:57,251 INFO L225 Difference]: With dead ends: 95 [2020-12-09 07:46:57,251 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 07:46:57,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:46:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 07:46:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-09 07:46:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 07:46:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2020-12-09 07:46:57,256 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 16 [2020-12-09 07:46:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:57,256 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2020-12-09 07:46:57,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:46:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2020-12-09 07:46:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:46:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:57,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:57,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:46:57,458 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:57,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 471236851, now seen corresponding path program 1 times [2020-12-09 07:46:57,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:57,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825645315] [2020-12-09 07:46:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:57,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825645315] [2020-12-09 07:46:57,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636413456] [2020-12-09 07:46:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:46:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:57,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:57,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163399538] [2020-12-09 07:46:57,703 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-12-09 07:46:57,703 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:57,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:57,703 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:57,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:57,808 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 07:46:57,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:57,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 07:46:57,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55070189] [2020-12-09 07:46:57,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 07:46:57,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 07:46:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:46:57,809 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand 10 states. [2020-12-09 07:46:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:58,008 INFO L93 Difference]: Finished difference Result 442 states and 524 transitions. [2020-12-09 07:46:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 07:46:58,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-09 07:46:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:58,010 INFO L225 Difference]: With dead ends: 442 [2020-12-09 07:46:58,011 INFO L226 Difference]: Without dead ends: 441 [2020-12-09 07:46:58,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2020-12-09 07:46:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-12-09 07:46:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 200. [2020-12-09 07:46:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-09 07:46:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 244 transitions. [2020-12-09 07:46:58,021 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 244 transitions. Word has length 17 [2020-12-09 07:46:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:58,021 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 244 transitions. [2020-12-09 07:46:58,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 07:46:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 244 transitions. [2020-12-09 07:46:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 07:46:58,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:58,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:46:58,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-12-09 07:46:58,224 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash 467352042, now seen corresponding path program 2 times [2020-12-09 07:46:58,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:58,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100331113] [2020-12-09 07:46:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:46:58,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100331113] [2020-12-09 07:46:58,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497129441] [2020-12-09 07:46:58,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:58,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 07:46:58,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:46:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 07:46:58,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-09 07:46:58,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-09 07:46:58,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127325819] [2020-12-09 07:46:58,434 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-12-09 07:46:58,434 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:58,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:58,434 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:58,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:58,526 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 07:46:58,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:58,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2020-12-09 07:46:58,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696802435] [2020-12-09 07:46:58,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 07:46:58,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 07:46:58,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:46:58,528 INFO L87 Difference]: Start difference. First operand 200 states and 244 transitions. Second operand 13 states. [2020-12-09 07:46:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:58,888 INFO L93 Difference]: Finished difference Result 699 states and 853 transitions. [2020-12-09 07:46:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-09 07:46:58,888 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-12-09 07:46:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:58,891 INFO L225 Difference]: With dead ends: 699 [2020-12-09 07:46:58,891 INFO L226 Difference]: Without dead ends: 698 [2020-12-09 07:46:58,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=449, Invalid=883, Unknown=0, NotChecked=0, Total=1332 [2020-12-09 07:46:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-12-09 07:46:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 244. [2020-12-09 07:46:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-09 07:46:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 300 transitions. [2020-12-09 07:46:58,906 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 300 transitions. Word has length 32 [2020-12-09 07:46:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:58,907 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 300 transitions. [2020-12-09 07:46:58,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 07:46:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 300 transitions. [2020-12-09 07:46:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 07:46:58,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:58,908 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2020-12-09 07:46:59,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:46:59,110 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:59,111 INFO L82 PathProgramCache]: Analyzing trace with hash -538753878, now seen corresponding path program 2 times [2020-12-09 07:46:59,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:59,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972338479] [2020-12-09 07:46:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 07:46:59,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972338479] [2020-12-09 07:46:59,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507874810] [2020-12-09 07:46:59,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:59,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 07:46:59,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:46:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:46:59,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:46:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 07:46:59,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:46:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 07:46:59,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168576905] [2020-12-09 07:46:59,218 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 07:46:59,218 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:46:59,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:46:59,218 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:46:59,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:46:59,288 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:46:59,659 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:46:59,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:46:59,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2020-12-09 07:46:59,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215307248] [2020-12-09 07:46:59,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:46:59,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:46:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:46:59,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:46:59,660 INFO L87 Difference]: Start difference. First operand 244 states and 300 transitions. Second operand 4 states. [2020-12-09 07:46:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:46:59,680 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-12-09 07:46:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:46:59,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-09 07:46:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:46:59,682 INFO L225 Difference]: With dead ends: 244 [2020-12-09 07:46:59,682 INFO L226 Difference]: Without dead ends: 243 [2020-12-09 07:46:59,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:46:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-09 07:46:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 76. [2020-12-09 07:46:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 07:46:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2020-12-09 07:46:59,688 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 33 [2020-12-09 07:46:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:46:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2020-12-09 07:46:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:46:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2020-12-09 07:46:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 07:46:59,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:46:59,689 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 07:46:59,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:46:59,891 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:46:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:46:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash -738627734, now seen corresponding path program 1 times [2020-12-09 07:46:59,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:46:59,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047182391] [2020-12-09 07:46:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:46:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 07:46:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047182391] [2020-12-09 07:46:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011946146] [2020-12-09 07:46:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:46:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:46:59,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:46:59,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:47:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 07:47:00,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:47:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 07:47:00,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:47:00,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 14 [2020-12-09 07:47:00,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523496222] [2020-12-09 07:47:00,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:47:00,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:47:00,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:47:00,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:47:00,045 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand 8 states. [2020-12-09 07:47:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:47:00,111 INFO L93 Difference]: Finished difference Result 193 states and 226 transitions. [2020-12-09 07:47:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:47:00,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-09 07:47:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:47:00,112 INFO L225 Difference]: With dead ends: 193 [2020-12-09 07:47:00,112 INFO L226 Difference]: Without dead ends: 132 [2020-12-09 07:47:00,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-12-09 07:47:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-09 07:47:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-12-09 07:47:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 07:47:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2020-12-09 07:47:00,120 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 44 [2020-12-09 07:47:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:47:00,120 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2020-12-09 07:47:00,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:47:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2020-12-09 07:47:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 07:47:00,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:47:00,121 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 07:47:00,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:47:00,322 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 07:47:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:47:00,324 INFO L82 PathProgramCache]: Analyzing trace with hash -37887510, now seen corresponding path program 2 times [2020-12-09 07:47:00,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:47:00,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682294403] [2020-12-09 07:47:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:47:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:47:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:47:00,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682294403] [2020-12-09 07:47:00,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721538146] [2020-12-09 07:47:00,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/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 07:47:00,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 07:47:00,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:47:00,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 07:47:00,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:47:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 07:47:00,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:47:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 07:47:00,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1382264003] [2020-12-09 07:47:00,575 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 07:47:00,575 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:47:00,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:47:00,575 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:47:00,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:47:00,738 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 07:47:00,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:47:00,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2020-12-09 07:47:00,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28848489] [2020-12-09 07:47:00,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 07:47:00,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:47:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 07:47:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:47:00,739 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand 14 states. [2020-12-09 07:47:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:47:00,995 INFO L93 Difference]: Finished difference Result 187 states and 207 transitions. [2020-12-09 07:47:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 07:47:00,996 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-12-09 07:47:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:47:00,996 INFO L225 Difference]: With dead ends: 187 [2020-12-09 07:47:00,996 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:47:00,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=696, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 07:47:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:47:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:47:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:47:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:47:00,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-12-09 07:47:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:47:00,997 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:47:00,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 07:47:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:47:00,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:47:01,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:47:01,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:47:01,336 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2020-12-09 07:47:01,444 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 120 [2020-12-09 07:47:01,704 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 235 [2020-12-09 07:47:01,919 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 27 [2020-12-09 07:47:02,287 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2020-12-09 07:47:02,873 WARN L197 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 35 [2020-12-09 07:47:02,875 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-12-09 07:47:02,875 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse5 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0)) (.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse6 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= 0 ULTIMATE.start_main_~N~0)) (.cse3 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse5 (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse6 .cse1 .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 0) .cse4))) [2020-12-09 07:47:02,875 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-12-09 07:47:02,875 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-12-09 07:47:02,875 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:47:02,875 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L258 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~n~0 2147483647))) (let ((.cse0 (let ((.cse3 (<= 0 ULTIMATE.start_main_~i~0)) (.cse4 (<= 0 ULTIMATE.start_main_~j~0)) (.cse5 (<= 0 ULTIMATE.start_main_~N~0)) (.cse6 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse7 (<= 0 ULTIMATE.start_main_~k~0))) (or (and .cse3 .cse4 .cse5 (< ULTIMATE.start_main_~k~0 2147483647) .cse6 .cse2 .cse7) (and .cse3 .cse4 (<= ULTIMATE.start_main_~i~0 2147483646) (<= ULTIMATE.start_main_~k~0 2147483646) .cse5 .cse6 .cse7)))) (.cse1 (<= ULTIMATE.start_main_~m~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2) (and .cse0 .cse1 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)))))) [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-12-09 07:47:02,876 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L258 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse7 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~i~0 2147483646)) (.cse3 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1))) (.cse5 (<= 0 ULTIMATE.start_main_~N~0)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse8 (<= ULTIMATE.start_main_~j~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 (<= ULTIMATE.start_main_~k~0 2147483646) .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 0 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse3 .cse5 .cse7 .cse8 .cse6) (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~m~0 0) .cse5 .cse7 .cse6 .cse8) (and (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8))) [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point L21(lines 21 35) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L265 CegarLoopResult]: At program point L21-1(lines 21 35) the Hoare annotation is: true [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-12-09 07:47:02,877 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-12-09 07:47:02,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:47:02 BoogieIcfgContainer [2020-12-09 07:47:02,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:47:02,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:47:02,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:47:02,897 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:47:02,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:46:53" (3/4) ... [2020-12-09 07:47:02,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:47:02,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 07:47:02,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 07:47:02,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:47:02,931 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c35a467-d0c1-406a-9a0b-640a4d52aaa8/bin/utaipan/witness.graphml [2020-12-09 07:47:02,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:47:02,931 INFO L168 Benchmark]: Toolchain (without parser) took 9527.39 ms. Allocated memory was 86.0 MB in the beginning and 142.6 MB in the end (delta: 56.6 MB). Free memory was 56.6 MB in the beginning and 116.5 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:47:02,932 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 45.4 MB in the beginning and 45.4 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:47:02,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.13 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 56.4 MB in the beginning and 95.9 MB in the end (delta: -39.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:47:02,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.99 ms. Allocated memory is still 117.4 MB. Free memory was 95.9 MB in the beginning and 94.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:47:02,932 INFO L168 Benchmark]: Boogie Preprocessor took 13.39 ms. Allocated memory is still 117.4 MB. Free memory was 94.6 MB in the beginning and 93.9 MB in the end (delta: 729.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:47:02,933 INFO L168 Benchmark]: RCFGBuilder took 212.59 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 80.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:47:02,933 INFO L168 Benchmark]: TraceAbstraction took 9088.45 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 79.9 MB in the beginning and 119.6 MB in the end (delta: -39.7 MB). Peak memory consumption was 72.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:47:02,933 INFO L168 Benchmark]: Witness Printer took 34.56 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 116.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:47:02,935 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 86.0 MB. Free memory was 45.4 MB in the beginning and 45.4 MB in the end (delta: 54.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 151.13 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 56.4 MB in the beginning and 95.9 MB in the end (delta: -39.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.99 ms. Allocated memory is still 117.4 MB. Free memory was 95.9 MB in the beginning and 94.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.39 ms. Allocated memory is still 117.4 MB. Free memory was 94.6 MB in the beginning and 93.9 MB in the end (delta: 729.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 212.59 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 80.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9088.45 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 79.9 MB in the beginning and 119.6 MB in the end (delta: -39.7 MB). Peak memory consumption was 72.9 MB. Max. memory is 16.1 GB. * Witness Printer took 34.56 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 116.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((0 <= i && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && n <= 2147483647) || (((((((m <= j && N <= i) && 0 <= j) && m <= 2147483647) && 0 <= N) && N <= k + 1) && N <= 2147483647) && n <= 2147483647)) || ((((((m <= j && 0 <= i) && 0 <= j) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && k <= 2147483646) && N <= k + 1) && 0 <= N) && n <= 2147483647) && N <= i + 1) && 0 <= k) || (((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647)) || (((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 0) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && j <= 0)) || (((((((N <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && N <= k + 1) && 0 <= N) && n <= 2147483647) && j <= 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((0 <= i && 0 <= j) && 0 <= N) && k < 2147483647) && N <= 2147483647) && n <= 2147483647) && 0 <= k) || ((((((0 <= i && 0 <= j) && i <= 2147483646) && k <= 2147483646) && 0 <= N) && N <= 2147483647) && 0 <= k)) && i <= 0) && m <= 2147483647) && n <= 2147483647) || (((((((((((0 <= i && 0 <= j) && 0 <= N) && k < 2147483647) && N <= 2147483647) && n <= 2147483647) && 0 <= k) || ((((((0 <= i && 0 <= j) && i <= 2147483646) && k <= 2147483646) && 0 <= N) && N <= 2147483647) && 0 <= k)) && m <= 2147483647) && N <= k + 1) && n <= 2147483647) && N <= i + 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 18, TraceHistogramMax: 5, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 275 SDtfs, 1114 SDslu, 434 SDs, 0 SdLazy, 649 SolverSat, 300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 621 GetRequests, 448 SyntacticMatches, 14 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 1042 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 66 NumberOfFragments, 301 HoareAnnotationTreeSize, 4 FomulaSimplifications, 329874 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 4 FomulaSimplificationsInter, 76526 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 518 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 705 ConstructedInterpolants, 0 QuantifiedInterpolants, 54959 SizeOfPredicates, 19 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 413/716 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...