./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:19,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:19,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:19,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:19,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:19,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:19,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:19,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:19,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:19,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:19,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:19,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:19,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:19,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:19,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:19,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:19,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:19,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:19,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:19,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:19,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:19,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:19,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:19,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:19,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:19,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:19,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:19,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:19,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:19,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:19,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:19,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:19,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:19,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:19,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:19,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:19,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:19,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:19,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:19,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:19,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:19,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-13 02:39:19,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:19,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:19,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:19,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:19,836 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:19,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:19,836 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:19,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:39:19,842 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:19,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:19,843 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:39:19,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:39:19,844 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:19,844 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:39:19,844 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:39:19,844 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:39:19,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:19,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:39:19,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 02:39:19,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:39:19,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:39:19,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:19,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:19,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:19,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:19,847 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 02:39:19,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:39:19,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:19,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:19,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:19,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:19,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:19,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:19,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:19,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:19,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:19,851 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:39:19,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:39:19,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:19,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:19,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:19,852 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_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 [2021-11-13 02:39:20,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:20,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:20,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:20,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:20,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:20,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/recursive/Addition02.c [2021-11-13 02:39:20,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/data/af27a1415/c23a5dd28e51411c87bef93a2e3673ff/FLAG373bcb97d [2021-11-13 02:39:20,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:39:20,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/sv-benchmarks/c/recursive/Addition02.c [2021-11-13 02:39:20,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/data/af27a1415/c23a5dd28e51411c87bef93a2e3673ff/FLAG373bcb97d [2021-11-13 02:39:21,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/data/af27a1415/c23a5dd28e51411c87bef93a2e3673ff [2021-11-13 02:39:21,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:39:21,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:39:21,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:21,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:39:21,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:39:21,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7f1a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21, skipping insertion in model container [2021-11-13 02:39:21,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:39:21,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:39:21,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-11-13 02:39:21,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:21,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:39:21,332 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-11-13 02:39:21,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:21,347 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:39:21,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21 WrapperNode [2021-11-13 02:39:21,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:21,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:39:21,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:39:21,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:39:21,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:39:21,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:39:21,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:39:21,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:39:21,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:39:21,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:39:21,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:39:21,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:39:21,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (1/1) ... [2021-11-13 02:39:21,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:21,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:21,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:39:21,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:39:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:39:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:39:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:39:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:39:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-11-13 02:39:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-11-13 02:39:21,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:39:21,711 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:39:21,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:21 BoogieIcfgContainer [2021-11-13 02:39:21,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:39:21,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:39:21,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:39:21,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:39:21,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:39:21" (1/3) ... [2021-11-13 02:39:21,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7be50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:21, skipping insertion in model container [2021-11-13 02:39:21,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:21" (2/3) ... [2021-11-13 02:39:21,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7be50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:21, skipping insertion in model container [2021-11-13 02:39:21,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:21" (3/3) ... [2021-11-13 02:39:21,735 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2021-11-13 02:39:21,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:39:21,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-13 02:39:21,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:39:21,846 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:39:21,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-13 02:39:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 02:39:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 02:39:21,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:21,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:21,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:21,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2044595686, now seen corresponding path program 1 times [2021-11-13 02:39:21,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:21,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210990589] [2021-11-13 02:39:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:21,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210990589] [2021-11-13 02:39:22,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210990589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:39:22,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365773768] [2021-11-13 02:39:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:22,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:22,214 INFO L87 Difference]: Start difference. First operand has 37 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,319 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-11-13 02:39:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-13 02:39:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,331 INFO L225 Difference]: With dead ends: 65 [2021-11-13 02:39:22,332 INFO L226 Difference]: Without dead ends: 59 [2021-11-13 02:39:22,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:22,339 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 52 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 107 Invalid, 68 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 63.42ms Time] [2021-11-13 02:39:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-13 02:39:22,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2021-11-13 02:39:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 45 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 02:39:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2021-11-13 02:39:22,388 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 8 [2021-11-13 02:39:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,389 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2021-11-13 02:39:22,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2021-11-13 02:39:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 02:39:22,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:39:22,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1042043244, now seen corresponding path program 1 times [2021-11-13 02:39:22,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:22,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174049012] [2021-11-13 02:39:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174049012] [2021-11-13 02:39:22,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174049012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:39:22,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029421060] [2021-11-13 02:39:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:22,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:22,447 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,538 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2021-11-13 02:39:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 02:39:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,541 INFO L225 Difference]: With dead ends: 97 [2021-11-13 02:39:22,541 INFO L226 Difference]: Without dead ends: 95 [2021-11-13 02:39:22,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:22,544 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 101 Invalid, 57 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 67.36ms Time] [2021-11-13 02:39:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-13 02:39:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2021-11-13 02:39:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 75 states have internal predecessors, (103), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 02:39:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-11-13 02:39:22,580 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 9 [2021-11-13 02:39:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,581 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-11-13 02:39:22,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-11-13 02:39:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:39:22,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:39:22,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2056522533, now seen corresponding path program 1 times [2021-11-13 02:39:22,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:22,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156007139] [2021-11-13 02:39:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156007139] [2021-11-13 02:39:22,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156007139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:39:22,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644922696] [2021-11-13 02:39:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:39:22,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:39:22,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:39:22,668 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,706 INFO L93 Difference]: Finished difference Result 89 states and 121 transitions. [2021-11-13 02:39:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-13 02:39:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,709 INFO L225 Difference]: With dead ends: 89 [2021-11-13 02:39:22,709 INFO L226 Difference]: Without dead ends: 88 [2021-11-13 02:39:22,710 INFO L932 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 [2021-11-13 02:39:22,712 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.84ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 7 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 18.84ms Time] [2021-11-13 02:39:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-13 02:39:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-13 02:39:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 74 states have internal predecessors, (102), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 02:39:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 120 transitions. [2021-11-13 02:39:22,728 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 120 transitions. Word has length 10 [2021-11-13 02:39:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,728 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 120 transitions. [2021-11-13 02:39:22,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 120 transitions. [2021-11-13 02:39:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:39:22,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:39:22,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2056397732, now seen corresponding path program 1 times [2021-11-13 02:39:22,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:22,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887727493] [2021-11-13 02:39:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887727493] [2021-11-13 02:39:22,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887727493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:39:22,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408049785] [2021-11-13 02:39:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:22,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:22,785 INFO L87 Difference]: Start difference. First operand 88 states and 120 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,902 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-11-13 02:39:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:39:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,905 INFO L225 Difference]: With dead ends: 97 [2021-11-13 02:39:22,912 INFO L226 Difference]: Without dead ends: 95 [2021-11-13 02:39:22,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:22,914 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 72 Invalid, 72 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 96.79ms Time] [2021-11-13 02:39:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-13 02:39:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2021-11-13 02:39:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 73 states have internal predecessors, (96), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 02:39:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-11-13 02:39:22,948 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 10 [2021-11-13 02:39:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,948 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-11-13 02:39:22,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2021-11-13 02:39:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:39:22,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:39:22,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash 672310965, now seen corresponding path program 1 times [2021-11-13 02:39:22,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:22,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942532486] [2021-11-13 02:39:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:22,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:22,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942532486] [2021-11-13 02:39:22,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942532486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:39:22,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460709638] [2021-11-13 02:39:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:39:22,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:39:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:39:22,995 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,016 INFO L93 Difference]: Finished difference Result 87 states and 114 transitions. [2021-11-13 02:39:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-13 02:39:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,018 INFO L225 Difference]: With dead ends: 87 [2021-11-13 02:39:23,018 INFO L226 Difference]: Without dead ends: 67 [2021-11-13 02:39:23,018 INFO L932 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 [2021-11-13 02:39:23,020 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.33ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 94 Invalid, 6 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 7.33ms Time] [2021-11-13 02:39:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-13 02:39:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2021-11-13 02:39:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 48 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-11-13 02:39:23,029 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 11 [2021-11-13 02:39:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,029 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-11-13 02:39:23,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:39:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-11-13 02:39:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:39:23,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:39:23,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash 676179822, now seen corresponding path program 1 times [2021-11-13 02:39:23,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:23,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134826444] [2021-11-13 02:39:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:23,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134826444] [2021-11-13 02:39:23,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134826444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:23,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:23,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:39:23,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137954479] [2021-11-13 02:39:23,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:23,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:23,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:23,065 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,081 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-11-13 02:39:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:39:23,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,083 INFO L225 Difference]: With dead ends: 53 [2021-11-13 02:39:23,083 INFO L226 Difference]: Without dead ends: 52 [2021-11-13 02:39:23,084 INFO L932 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 [2021-11-13 02:39:23,085 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 12 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 12.20ms Time] [2021-11-13 02:39:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-13 02:39:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-13 02:39:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 47 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-11-13 02:39:23,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 11 [2021-11-13 02:39:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,093 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-11-13 02:39:23,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-11-13 02:39:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:39:23,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:39:23,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -186889601, now seen corresponding path program 1 times [2021-11-13 02:39:23,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:23,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051081952] [2021-11-13 02:39:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:23,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051081952] [2021-11-13 02:39:23,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051081952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:23,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:23,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:39:23,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692546129] [2021-11-13 02:39:23,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:23,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:23,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:23,139 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,178 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2021-11-13 02:39:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:23,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:39:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,180 INFO L225 Difference]: With dead ends: 76 [2021-11-13 02:39:23,180 INFO L226 Difference]: Without dead ends: 43 [2021-11-13 02:39:23,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:23,182 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 26.83ms Time] [2021-11-13 02:39:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-13 02:39:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-11-13 02:39:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 35 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-11-13 02:39:23,188 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2021-11-13 02:39:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,188 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-11-13 02:39:23,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-11-13 02:39:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 02:39:23,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:39:23,190 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1626555607, now seen corresponding path program 1 times [2021-11-13 02:39:23,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:23,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344703421] [2021-11-13 02:39:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:23,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344703421] [2021-11-13 02:39:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344703421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:23,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328091658] [2021-11-13 02:39:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:23,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:23,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:23,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:23,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:39:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:39:23,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328091658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:23,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1647025545] [2021-11-13 02:39:23,616 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:39:23,616 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:39:23,622 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:39:23,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:39:23,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-13 02:39:23,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375600466] [2021-11-13 02:39:23,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:23,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:39:23,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:39:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:39:23,629 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,820 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2021-11-13 02:39:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:39:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-13 02:39:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,824 INFO L225 Difference]: With dead ends: 150 [2021-11-13 02:39:23,824 INFO L226 Difference]: Without dead ends: 148 [2021-11-13 02:39:23,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:39:23,832 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 166 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.85ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 154 Invalid, 132 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [26 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 92.85ms Time] [2021-11-13 02:39:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-13 02:39:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 109. [2021-11-13 02:39:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 98 states have internal predecessors, (118), 12 states have call successors, (12), 10 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2021-11-13 02:39:23,864 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 16 [2021-11-13 02:39:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,864 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2021-11-13 02:39:23,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2021-11-13 02:39:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:39:23,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:24,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:24,081 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1927547204, now seen corresponding path program 1 times [2021-11-13 02:39:24,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:24,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655622162] [2021-11-13 02:39:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:24,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:24,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:24,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655622162] [2021-11-13 02:39:24,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655622162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:24,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:24,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:39:24,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064353290] [2021-11-13 02:39:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:24,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:24,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:24,127 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:24,157 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2021-11-13 02:39:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:24,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 02:39:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:24,158 INFO L225 Difference]: With dead ends: 110 [2021-11-13 02:39:24,158 INFO L226 Difference]: Without dead ends: 41 [2021-11-13 02:39:24,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:24,160 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:24,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 15.79ms Time] [2021-11-13 02:39:24,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-13 02:39:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-13 02:39:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-11-13 02:39:24,166 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 20 [2021-11-13 02:39:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:24,166 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-11-13 02:39:24,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-11-13 02:39:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 02:39:24,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:24,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-13 02:39:24,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 02:39:24,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash 340979470, now seen corresponding path program 2 times [2021-11-13 02:39:24,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:24,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139467904] [2021-11-13 02:39:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:24,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:24,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139467904] [2021-11-13 02:39:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139467904] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288060498] [2021-11-13 02:39:24,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:39:24,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:24,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:24,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 02:39:24,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-13 02:39:24,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:39:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:39:24,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:24,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:24,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288060498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:24,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [33420298] [2021-11-13 02:39:24,743 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:39:24,743 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:39:24,744 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:39:24,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:39:24,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-13 02:39:24,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655766696] [2021-11-13 02:39:24,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:24,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 02:39:24,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 02:39:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:39:24,746 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 24 states, 23 states have (on average 3.0) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:24,944 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-11-13 02:39:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 02:39:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-13 02:39:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:24,946 INFO L225 Difference]: With dead ends: 94 [2021-11-13 02:39:24,946 INFO L226 Difference]: Without dead ends: 93 [2021-11-13 02:39:24,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 02:39:24,948 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 204 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.26ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:24,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 121 Invalid, 104 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 74.26ms Time] [2021-11-13 02:39:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-13 02:39:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-11-13 02:39:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-13 02:39:24,957 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 40 [2021-11-13 02:39:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:24,958 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-13 02:39:24,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-13 02:39:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 02:39:24,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:24,962 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-11-13 02:39:24,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:25,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:25,185 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash -194452356, now seen corresponding path program 3 times [2021-11-13 02:39:25,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:25,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426145270] [2021-11-13 02:39:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:25,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:25,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:25,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426145270] [2021-11-13 02:39:25,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426145270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:25,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354172073] [2021-11-13 02:39:25,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:39:25,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:25,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:25,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:25,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 02:39:25,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:39:25,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:39:25,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 02:39:25,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:25,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:26,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354172073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:26,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1585226240] [2021-11-13 02:39:26,571 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:39:26,571 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:39:26,572 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:39:26,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:39:26,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-13 02:39:26,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501276760] [2021-11-13 02:39:26,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:26,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-13 02:39:26,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-13 02:39:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 02:39:26,578 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 48 states, 47 states have (on average 3.25531914893617) internal successors, (153), 26 states have internal predecessors, (153), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:27,174 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2021-11-13 02:39:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-13 02:39:27,177 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.25531914893617) internal successors, (153), 26 states have internal predecessors, (153), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-13 02:39:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:27,180 INFO L225 Difference]: With dead ends: 190 [2021-11-13 02:39:27,180 INFO L226 Difference]: Without dead ends: 189 [2021-11-13 02:39:27,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2021-11-13 02:39:27,184 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 513 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:27,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 211 Invalid, 189 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [16 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 129.79ms Time] [2021-11-13 02:39:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-13 02:39:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2021-11-13 02:39:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2021-11-13 02:39:27,199 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 88 [2021-11-13 02:39:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:27,200 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2021-11-13 02:39:27,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.25531914893617) internal successors, (153), 26 states have internal predecessors, (153), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2021-11-13 02:39:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 02:39:27,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:27,203 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2021-11-13 02:39:27,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:27,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 02:39:27,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash -309111976, now seen corresponding path program 4 times [2021-11-13 02:39:27,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:27,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231521090] [2021-11-13 02:39:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:27,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:28,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:28,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231521090] [2021-11-13 02:39:28,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231521090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:28,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344102721] [2021-11-13 02:39:28,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:39:28,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:28,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:28,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:28,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 02:39:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:28,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-13 02:39:28,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:28,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344102721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:31,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711935530] [2021-11-13 02:39:31,179 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:39:31,180 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:39:31,180 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:39:31,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:39:31,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-13 02:39:31,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387422252] [2021-11-13 02:39:31,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:31,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-13 02:39:31,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-13 02:39:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2021-11-13 02:39:31,190 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 96 states, 95 states have (on average 3.3789473684210525) internal successors, (321), 50 states have internal predecessors, (321), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:33,071 INFO L93 Difference]: Finished difference Result 382 states and 405 transitions. [2021-11-13 02:39:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-13 02:39:33,072 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.3789473684210525) internal successors, (321), 50 states have internal predecessors, (321), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-13 02:39:33,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:33,076 INFO L225 Difference]: With dead ends: 382 [2021-11-13 02:39:33,076 INFO L226 Difference]: Without dead ends: 381 [2021-11-13 02:39:33,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2021-11-13 02:39:33,088 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1343 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.06ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:33,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 421 Invalid, 385 Unknown, 0 Unchecked, 8.06ms Time], IncrementalHoareTripleChecker [27 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 245.37ms Time] [2021-11-13 02:39:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-13 02:39:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2021-11-13 02:39:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 329 states have (on average 1.0030395136778116) internal successors, (330), 329 states have internal predecessors, (330), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2021-11-13 02:39:33,115 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 184 [2021-11-13 02:39:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:33,121 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2021-11-13 02:39:33,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.3789473684210525) internal successors, (321), 50 states have internal predecessors, (321), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2021-11-13 02:39:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-11-13 02:39:33,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:33,139 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2021-11-13 02:39:33,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:33,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 02:39:33,353 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 956449040, now seen corresponding path program 5 times [2021-11-13 02:39:33,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:33,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475717112] [2021-11-13 02:39:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:33,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:36,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:39:36,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475717112] [2021-11-13 02:39:36,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475717112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:36,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604731931] [2021-11-13 02:39:36,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:39:36,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:36,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:36,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:36,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 02:39:36,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-13 02:39:36,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:39:36,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-13 02:39:36,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:37,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604731931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:44,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1687726102] [2021-11-13 02:39:44,241 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:39:44,241 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:39:44,241 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:39:44,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:39:44,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-13 02:39:44,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401447422] [2021-11-13 02:39:44,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:44,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-13 02:39:44,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:39:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-13 02:39:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2021-11-13 02:39:44,262 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand has 192 states, 191 states have (on average 3.43979057591623) internal successors, (657), 98 states have internal predecessors, (657), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:51,935 INFO L93 Difference]: Finished difference Result 766 states and 813 transitions. [2021-11-13 02:39:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-13 02:39:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 3.43979057591623) internal successors, (657), 98 states have internal predecessors, (657), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2021-11-13 02:39:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:51,943 INFO L225 Difference]: With dead ends: 766 [2021-11-13 02:39:51,944 INFO L226 Difference]: Without dead ends: 765 [2021-11-13 02:39:51,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17484 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2021-11-13 02:39:51,954 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3213 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 433.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.44ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 642.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:51,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3213 Valid, 796 Invalid, 740 Unknown, 0 Unchecked, 13.44ms Time], IncrementalHoareTripleChecker [54 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 642.83ms Time] [2021-11-13 02:39:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-13 02:39:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 761. [2021-11-13 02:39:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 665 states have (on average 1.0015037593984963) internal successors, (666), 665 states have internal predecessors, (666), 95 states have call successors, (95), 95 states have call predecessors, (95), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 761 transitions. [2021-11-13 02:39:51,996 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 761 transitions. Word has length 376 [2021-11-13 02:39:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:51,997 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 761 transitions. [2021-11-13 02:39:51,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 3.43979057591623) internal successors, (657), 98 states have internal predecessors, (657), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:39:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 761 transitions. [2021-11-13 02:39:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2021-11-13 02:39:52,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:52,022 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1] [2021-11-13 02:39:52,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:52,242 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:39:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1565023360, now seen corresponding path program 6 times [2021-11-13 02:39:52,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:39:52,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966183619] [2021-11-13 02:39:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:52,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:39:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:03,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:03,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966183619] [2021-11-13 02:40:03,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966183619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:03,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561198980] [2021-11-13 02:40:03,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:40:03,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:03,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:03,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:03,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 02:40:03,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:40:03,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:03,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-13 02:40:03,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:05,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:31,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561198980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:31,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145056227] [2021-11-13 02:40:31,819 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:40:31,820 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:40:31,820 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:40:31,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:40:31,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-13 02:40:31,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712150796] [2021-11-13 02:40:31,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:40:31,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-13 02:40:31,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-13 02:40:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2021-11-13 02:40:31,851 INFO L87 Difference]: Start difference. First operand 761 states and 761 transitions. Second operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 194 states have internal predecessors, (1329), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:15,826 INFO L93 Difference]: Finished difference Result 1534 states and 1629 transitions. [2021-11-13 02:41:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-13 02:41:15,827 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 194 states have internal predecessors, (1329), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 760 [2021-11-13 02:41:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:15,904 INFO L225 Difference]: With dead ends: 1534 [2021-11-13 02:41:15,904 INFO L226 Difference]: Without dead ends: 1533 [2021-11-13 02:41:15,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1900 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2021-11-13 02:41:15,933 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 8862 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 861.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8862 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.06ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1108.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:15,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8862 Valid, 1582 Invalid, 1475 Unknown, 0 Unchecked, 35.06ms Time], IncrementalHoareTripleChecker [108 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1108.11ms Time] [2021-11-13 02:41:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-11-13 02:41:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1529. [2021-11-13 02:41:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1337 states have (on average 1.0007479431563202) internal successors, (1338), 1337 states have internal predecessors, (1338), 191 states have call successors, (191), 191 states have call predecessors, (191), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1529 transitions. [2021-11-13 02:41:16,029 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1529 transitions. Word has length 760 [2021-11-13 02:41:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 1529 transitions. [2021-11-13 02:41:16,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 194 states have internal predecessors, (1329), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:41:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1529 transitions. [2021-11-13 02:41:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2021-11-13 02:41:16,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:16,173 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1] [2021-11-13 02:41:16,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:16,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-13 02:41:16,388 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-13 02:41:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 594908000, now seen corresponding path program 7 times [2021-11-13 02:41:16,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:16,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484037269] [2021-11-13 02:41:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:16,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:57,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:57,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484037269] [2021-11-13 02:41:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484037269] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:41:57,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353747676] [2021-11-13 02:41:57,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:41:57,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:41:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:41:57,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:41:57,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91875b26-370e-4a2c-b6b1-5f0b00daa27a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 02:41:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:58,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-13 02:41:58,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:42:01,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 144400 backedges. 0 proven. 144400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:43:34,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353747676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:34,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142958398] [2021-11-13 02:43:34,054 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:43:34,054 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:43:34,054 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-13 02:43:34,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:43:34,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-11-13 02:43:34,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296359450] [2021-11-13 02:43:34,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:43:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-11-13 02:43:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:43:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-11-13 02:43:34,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147076, Invalid=441980, Unknown=0, NotChecked=0, Total=589056 [2021-11-13 02:43:34,136 INFO L87 Difference]: Start difference. First operand 1529 states and 1529 transitions. Second operand has 768 states, 767 states have (on average 3.485006518904824) internal successors, (2673), 386 states have internal predecessors, (2673), 382 states have call successors, (382), 382 states have call predecessors, (382), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)