./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:28:16,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:28:16,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:28:16,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:28:16,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:28:16,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:28:16,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:28:16,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:28:16,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:28:16,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:28:16,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:28:16,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:28:16,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:28:16,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:28:16,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:28:16,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:28:16,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:28:16,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:28:16,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:28:16,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:28:16,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:28:16,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:28:16,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:28:16,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:28:16,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:28:16,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:28:16,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:28:16,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:28:16,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:28:16,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:28:16,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:28:16,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:28:16,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:28:16,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:28:16,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:28:16,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:28:16,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:28:16,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:28:16,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:28:16,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:28:16,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:28:16,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-19 04:28:16,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:28:16,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:28:16,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:28:16,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:28:16,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:28:16,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:28:16,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:28:16,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:28:16,984 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:28:16,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:28:16,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:28:16,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:28:16,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:28:16,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:28:16,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:28:16,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:28:16,987 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 04:28:16,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:28:16,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:28:16,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:28:16,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:28:16,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:28:16,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:28:16,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:28:16,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:28:16,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:28:16,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:28:16,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:28:16,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:28:16,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:28:16,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:28:16,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-11-19 04:28:17,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:28:17,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:28:17,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:28:17,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:28:17,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:28:17,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-19 04:28:17,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/data/5b40434e8/d7d2e38cc0dd4de1b81fcc450d524179/FLAG414cf4d98 [2021-11-19 04:28:17,996 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:28:17,996 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-19 04:28:18,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/data/5b40434e8/d7d2e38cc0dd4de1b81fcc450d524179/FLAG414cf4d98 [2021-11-19 04:28:18,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/data/5b40434e8/d7d2e38cc0dd4de1b81fcc450d524179 [2021-11-19 04:28:18,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:28:18,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:28:18,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:28:18,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:28:18,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:28:18,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75378d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18, skipping insertion in model container [2021-11-19 04:28:18,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:28:18,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:28:18,580 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:28:18,601 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:28:18,623 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:28:18,634 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:28:18,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18 WrapperNode [2021-11-19 04:28:18,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:28:18,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:28:18,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:28:18,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:28:18,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,669 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-19 04:28:18,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:28:18,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:28:18,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:28:18,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:28:18,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:28:18,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:28:18,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:28:18,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:28:18,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (1/1) ... [2021-11-19 04:28:18,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:28:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:18,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:28:18,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:28:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:28:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:28:18,844 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:28:18,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:28:19,002 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:28:19,011 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:28:19,011 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 04:28:19,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:28:19 BoogieIcfgContainer [2021-11-19 04:28:19,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:28:19,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:28:19,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:28:19,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:28:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:28:18" (1/3) ... [2021-11-19 04:28:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de11284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:28:19, skipping insertion in model container [2021-11-19 04:28:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:28:18" (2/3) ... [2021-11-19 04:28:19,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de11284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:28:19, skipping insertion in model container [2021-11-19 04:28:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:28:19" (3/3) ... [2021-11-19 04:28:19,030 INFO L111 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-19 04:28:19,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:28:19,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-19 04:28:19,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:28:19,139 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 [2021-11-19 04:28:19,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-19 04:28:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 04:28:19,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:19,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 04:28:19,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2021-11-19 04:28:19,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:19,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951815342] [2021-11-19 04:28:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:19,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:19,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:19,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951815342] [2021-11-19 04:28:19,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951815342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:19,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:19,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:28:19,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139929971] [2021-11-19 04:28:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:19,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:28:19,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:28:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:28:19,444 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:19,521 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2021-11-19 04:28:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:28:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 04:28:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:19,535 INFO L225 Difference]: With dead ends: 61 [2021-11-19 04:28:19,535 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 04:28:19,539 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 [2021-11-19 04:28:19,545 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:19,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:28:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 04:28:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-11-19 04:28:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-11-19 04:28:19,585 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 5 [2021-11-19 04:28:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:19,586 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-11-19 04:28:19,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-11-19 04:28:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 04:28:19,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:19,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 04:28:19,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:28:19,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2021-11-19 04:28:19,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:19,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633125518] [2021-11-19 04:28:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:19,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:19,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:19,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633125518] [2021-11-19 04:28:19,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633125518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:19,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:28:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282179149] [2021-11-19 04:28:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:19,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:28:19,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:28:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:28:19,629 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:19,663 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-19 04:28:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:28:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 04:28:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:19,665 INFO L225 Difference]: With dead ends: 31 [2021-11-19 04:28:19,665 INFO L226 Difference]: Without dead ends: 30 [2021-11-19 04:28:19,666 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 [2021-11-19 04:28:19,668 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:19,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:28:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-19 04:28:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-19 04:28:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-11-19 04:28:19,678 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 6 [2021-11-19 04:28:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:19,678 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-11-19 04:28:19,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-11-19 04:28:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 04:28:19,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:19,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:19,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:28:19,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash 124122716, now seen corresponding path program 1 times [2021-11-19 04:28:19,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:19,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972983795] [2021-11-19 04:28:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:19,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:19,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:19,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972983795] [2021-11-19 04:28:19,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972983795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:19,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:19,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:28:19,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394034469] [2021-11-19 04:28:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:19,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:28:19,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:28:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:19,776 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:19,900 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-11-19 04:28:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:28:19,901 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 04:28:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:19,904 INFO L225 Difference]: With dead ends: 49 [2021-11-19 04:28:19,904 INFO L226 Difference]: Without dead ends: 48 [2021-11-19 04:28:19,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:19,907 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:19,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 19 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:28:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-19 04:28:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2021-11-19 04:28:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-19 04:28:19,919 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 8 [2021-11-19 04:28:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:19,919 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-19 04:28:19,920 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2021-11-19 04:28:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 04:28:19,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:19,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:19,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:28:19,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 124122767, now seen corresponding path program 1 times [2021-11-19 04:28:19,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:19,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535637659] [2021-11-19 04:28:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:19,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:19,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:19,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535637659] [2021-11-19 04:28:19,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535637659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:19,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:19,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:28:19,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818233354] [2021-11-19 04:28:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:19,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:28:19,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:28:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:19,966 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:20,073 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-11-19 04:28:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:28:20,074 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 04:28:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:20,076 INFO L225 Difference]: With dead ends: 64 [2021-11-19 04:28:20,079 INFO L226 Difference]: Without dead ends: 62 [2021-11-19 04:28:20,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:20,082 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:20,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:28:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-19 04:28:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2021-11-19 04:28:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2021-11-19 04:28:20,111 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 8 [2021-11-19 04:28:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:20,114 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2021-11-19 04:28:20,114 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2021-11-19 04:28:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:28:20,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:20,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:20,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:28:20,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -447163028, now seen corresponding path program 1 times [2021-11-19 04:28:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:20,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191161476] [2021-11-19 04:28:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:20,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:20,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191161476] [2021-11-19 04:28:20,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191161476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:20,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:20,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:28:20,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503419018] [2021-11-19 04:28:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:20,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:28:20,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:20,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:28:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:28:20,219 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:20,345 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-11-19 04:28:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:28:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 04:28:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:20,354 INFO L225 Difference]: With dead ends: 60 [2021-11-19 04:28:20,355 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 04:28:20,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:28:20,360 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:20,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:28:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 04:28:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-11-19 04:28:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2021-11-19 04:28:20,384 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 9 [2021-11-19 04:28:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:20,384 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2021-11-19 04:28:20,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2021-11-19 04:28:20,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:28:20,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:20,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:20,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:28:20,387 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -447161458, now seen corresponding path program 1 times [2021-11-19 04:28:20,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:20,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764001285] [2021-11-19 04:28:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:20,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:20,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764001285] [2021-11-19 04:28:20,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764001285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:20,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:20,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:28:20,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625920360] [2021-11-19 04:28:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:20,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:28:20,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:28:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:20,467 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:20,536 INFO L93 Difference]: Finished difference Result 97 states and 136 transitions. [2021-11-19 04:28:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:28:20,537 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 04:28:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:20,538 INFO L225 Difference]: With dead ends: 97 [2021-11-19 04:28:20,538 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 04:28:20,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:20,540 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:20,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:28:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 04:28:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2021-11-19 04:28:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2021-11-19 04:28:20,557 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 9 [2021-11-19 04:28:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:20,557 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2021-11-19 04:28:20,557 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2021-11-19 04:28:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:28:20,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:20,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:20,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:28:20,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash -977103247, now seen corresponding path program 1 times [2021-11-19 04:28:20,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:20,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64830346] [2021-11-19 04:28:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:20,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:20,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64830346] [2021-11-19 04:28:20,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64830346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:20,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:20,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:28:20,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703006558] [2021-11-19 04:28:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:20,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:28:20,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:28:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:28:20,592 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:20,616 INFO L93 Difference]: Finished difference Result 87 states and 124 transitions. [2021-11-19 04:28:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:28:20,624 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 04:28:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:20,625 INFO L225 Difference]: With dead ends: 87 [2021-11-19 04:28:20,626 INFO L226 Difference]: Without dead ends: 86 [2021-11-19 04:28:20,626 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 [2021-11-19 04:28:20,627 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:20,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:28:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-19 04:28:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-19 04:28:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 85 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2021-11-19 04:28:20,649 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 10 [2021-11-19 04:28:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:20,653 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2021-11-19 04:28:20,653 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2021-11-19 04:28:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 04:28:20,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:20,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:20,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:28:20,655 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -225429520, now seen corresponding path program 1 times [2021-11-19 04:28:20,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:20,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194659200] [2021-11-19 04:28:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:20,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:20,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194659200] [2021-11-19 04:28:20,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194659200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:28:20,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:28:20,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:28:20,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851558780] [2021-11-19 04:28:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:28:20,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:28:20,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:28:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:28:20,693 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:20,725 INFO L93 Difference]: Finished difference Result 86 states and 118 transitions. [2021-11-19 04:28:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:28:20,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 04:28:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:20,727 INFO L225 Difference]: With dead ends: 86 [2021-11-19 04:28:20,727 INFO L226 Difference]: Without dead ends: 85 [2021-11-19 04:28:20,727 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 [2021-11-19 04:28:20,728 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:20,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:28:20,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-19 04:28:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-19 04:28:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 84 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 112 transitions. [2021-11-19 04:28:20,742 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 112 transitions. Word has length 11 [2021-11-19 04:28:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:20,742 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 112 transitions. [2021-11-19 04:28:20,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2021-11-19 04:28:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 04:28:20,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:20,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:20,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:28:20,744 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -458138511, now seen corresponding path program 1 times [2021-11-19 04:28:20,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:20,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614181048] [2021-11-19 04:28:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:20,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:20,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614181048] [2021-11-19 04:28:20,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614181048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:20,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60281635] [2021-11-19 04:28:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:20,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:20,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:20,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:20,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:28:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:20,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:28:20,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:21,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60281635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:21,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:21,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-19 04:28:21,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934362063] [2021-11-19 04:28:21,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:21,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 04:28:21,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 04:28:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:28:21,331 INFO L87 Difference]: Start difference. First operand 85 states and 112 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:21,757 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2021-11-19 04:28:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 04:28:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-19 04:28:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:21,760 INFO L225 Difference]: With dead ends: 215 [2021-11-19 04:28:21,760 INFO L226 Difference]: Without dead ends: 214 [2021-11-19 04:28:21,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=389, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:28:21,766 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 162 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:21,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 33 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-19 04:28:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 144. [2021-11-19 04:28:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 143 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2021-11-19 04:28:21,813 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 14 [2021-11-19 04:28:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:21,815 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2021-11-19 04:28:21,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2021-11-19 04:28:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:28:21,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:21,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-19 04:28:21,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:22,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:22,019 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1317391881, now seen corresponding path program 1 times [2021-11-19 04:28:22,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:22,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523066009] [2021-11-19 04:28:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:22,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:22,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523066009] [2021-11-19 04:28:22,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523066009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230124040] [2021-11-19 04:28:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:22,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:22,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:22,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:28:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:22,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:28:22,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:22,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:22,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230124040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:22,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:22,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-19 04:28:22,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710264287] [2021-11-19 04:28:22,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:22,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 04:28:22,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 04:28:22,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:28:22,300 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:22,780 INFO L93 Difference]: Finished difference Result 261 states and 361 transitions. [2021-11-19 04:28:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 04:28:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-19 04:28:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:22,783 INFO L225 Difference]: With dead ends: 261 [2021-11-19 04:28:22,783 INFO L226 Difference]: Without dead ends: 258 [2021-11-19 04:28:22,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 04:28:22,784 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 208 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:22,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 31 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-19 04:28:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 167. [2021-11-19 04:28:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.2883435582822085) internal successors, (210), 166 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 210 transitions. [2021-11-19 04:28:22,807 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 210 transitions. Word has length 15 [2021-11-19 04:28:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:22,808 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 210 transitions. [2021-11-19 04:28:22,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 210 transitions. [2021-11-19 04:28:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 04:28:22,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:22,809 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:22,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:23,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 04:28:23,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -23572369, now seen corresponding path program 1 times [2021-11-19 04:28:23,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:23,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146384841] [2021-11-19 04:28:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:23,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:23,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:23,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146384841] [2021-11-19 04:28:23,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146384841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:23,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070389879] [2021-11-19 04:28:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:23,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:23,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:23,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:28:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:23,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:28:23,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070389879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:23,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-19 04:28:23,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714430206] [2021-11-19 04:28:23,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:23,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:28:23,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:28:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:28:23,211 INFO L87 Difference]: Start difference. First operand 167 states and 210 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:23,294 INFO L93 Difference]: Finished difference Result 377 states and 498 transitions. [2021-11-19 04:28:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:28:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-19 04:28:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:23,298 INFO L225 Difference]: With dead ends: 377 [2021-11-19 04:28:23,298 INFO L226 Difference]: Without dead ends: 375 [2021-11-19 04:28:23,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:28:23,299 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:23,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 42 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:28:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-19 04:28:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 274. [2021-11-19 04:28:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 270 states have (on average 1.2592592592592593) internal successors, (340), 273 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2021-11-19 04:28:23,319 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 18 [2021-11-19 04:28:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:23,319 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2021-11-19 04:28:23,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2021-11-19 04:28:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:28:23,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:23,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:23,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:23,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-19 04:28:23,526 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1589103225, now seen corresponding path program 1 times [2021-11-19 04:28:23,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:23,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185480618] [2021-11-19 04:28:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:23,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:28:23,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:23,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185480618] [2021-11-19 04:28:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185480618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:23,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199814433] [2021-11-19 04:28:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:23,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:23,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:23,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:28:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:23,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:28:23,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:28:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:28:24,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199814433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:24,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:24,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2021-11-19 04:28:24,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708740253] [2021-11-19 04:28:24,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:24,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 04:28:24,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 04:28:24,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-19 04:28:24,024 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:24,687 INFO L93 Difference]: Finished difference Result 511 states and 647 transitions. [2021-11-19 04:28:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-19 04:28:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 04:28:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:24,691 INFO L225 Difference]: With dead ends: 511 [2021-11-19 04:28:24,691 INFO L226 Difference]: Without dead ends: 508 [2021-11-19 04:28:24,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 04:28:24,693 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 120 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:24,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 10 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-19 04:28:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 305. [2021-11-19 04:28:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.239202657807309) internal successors, (373), 304 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 373 transitions. [2021-11-19 04:28:24,730 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 373 transitions. Word has length 24 [2021-11-19 04:28:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:24,732 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 373 transitions. [2021-11-19 04:28:24,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 373 transitions. [2021-11-19 04:28:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:28:24,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:24,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:24,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:24,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-19 04:28:24,953 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash -809405228, now seen corresponding path program 2 times [2021-11-19 04:28:24,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:24,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730798317] [2021-11-19 04:28:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:24,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:25,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:25,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730798317] [2021-11-19 04:28:25,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730798317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:25,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982077874] [2021-11-19 04:28:25,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:28:25,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:25,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:25,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:28:25,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:28:25,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:25,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:28:25,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:25,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982077874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:25,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2021-11-19 04:28:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223811419] [2021-11-19 04:28:25,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:25,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 04:28:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 04:28:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-19 04:28:25,477 INFO L87 Difference]: Start difference. First operand 305 states and 373 transitions. Second operand has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:26,861 INFO L93 Difference]: Finished difference Result 1478 states and 1783 transitions. [2021-11-19 04:28:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-19 04:28:26,861 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-19 04:28:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:26,870 INFO L225 Difference]: With dead ends: 1478 [2021-11-19 04:28:26,871 INFO L226 Difference]: Without dead ends: 1477 [2021-11-19 04:28:26,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1779, Invalid=4701, Unknown=0, NotChecked=0, Total=6480 [2021-11-19 04:28:26,876 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 485 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:26,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 34 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:28:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-11-19 04:28:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 705. [2021-11-19 04:28:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 701 states have (on average 1.24679029957204) internal successors, (874), 704 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 874 transitions. [2021-11-19 04:28:26,942 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 874 transitions. Word has length 29 [2021-11-19 04:28:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:26,942 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 874 transitions. [2021-11-19 04:28:26,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 874 transitions. [2021-11-19 04:28:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 04:28:26,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:26,944 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-19 04:28:26,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:27,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:27,170 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2094331952, now seen corresponding path program 2 times [2021-11-19 04:28:27,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:27,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865867352] [2021-11-19 04:28:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:27,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:27,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:27,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865867352] [2021-11-19 04:28:27,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865867352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:27,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166537924] [2021-11-19 04:28:27,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:28:27,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:27,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:27,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:28:27,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:28:27,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:27,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:28:27,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:27,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:38,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166537924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:38,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:38,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-19 04:28:38,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150329658] [2021-11-19 04:28:38,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:38,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 04:28:38,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:38,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 04:28:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=740, Unknown=5, NotChecked=0, Total=992 [2021-11-19 04:28:38,344 INFO L87 Difference]: Start difference. First operand 705 states and 874 transitions. Second operand has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:40,459 INFO L93 Difference]: Finished difference Result 1349 states and 1617 transitions. [2021-11-19 04:28:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-19 04:28:40,460 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-19 04:28:40,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:40,468 INFO L225 Difference]: With dead ends: 1349 [2021-11-19 04:28:40,469 INFO L226 Difference]: Without dead ends: 1348 [2021-11-19 04:28:40,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1303, Invalid=2852, Unknown=5, NotChecked=0, Total=4160 [2021-11-19 04:28:40,473 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 585 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:40,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 98 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 723 Invalid, 0 Unknown, 62 Unchecked, 0.7s Time] [2021-11-19 04:28:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-11-19 04:28:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 825. [2021-11-19 04:28:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 821 states have (on average 1.2375152253349573) internal successors, (1016), 824 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1016 transitions. [2021-11-19 04:28:40,560 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1016 transitions. Word has length 32 [2021-11-19 04:28:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:40,562 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 1016 transitions. [2021-11-19 04:28:40,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1016 transitions. [2021-11-19 04:28:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 04:28:40,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:40,566 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-19 04:28:40,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:40,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 04:28:40,781 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1671510570, now seen corresponding path program 1 times [2021-11-19 04:28:40,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:40,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652975411] [2021-11-19 04:28:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:40,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 04:28:40,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:40,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652975411] [2021-11-19 04:28:40,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652975411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:40,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933340570] [2021-11-19 04:28:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:40,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:40,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:40,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:40,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 04:28:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:40,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:28:40,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:41,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:41,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933340570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:41,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:41,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2021-11-19 04:28:41,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261096047] [2021-11-19 04:28:41,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:41,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 04:28:41,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 04:28:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:28:41,159 INFO L87 Difference]: Start difference. First operand 825 states and 1016 transitions. Second operand has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:42,061 INFO L93 Difference]: Finished difference Result 3021 states and 3797 transitions. [2021-11-19 04:28:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-19 04:28:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 04:28:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:42,078 INFO L225 Difference]: With dead ends: 3021 [2021-11-19 04:28:42,079 INFO L226 Difference]: Without dead ends: 2808 [2021-11-19 04:28:42,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=870, Invalid=1992, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 04:28:42,084 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 375 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:42,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 30 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-11-19 04:28:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 386. [2021-11-19 04:28:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 383 states have (on average 1.2114882506527416) internal successors, (464), 385 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 464 transitions. [2021-11-19 04:28:42,153 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 464 transitions. Word has length 36 [2021-11-19 04:28:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:42,153 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 464 transitions. [2021-11-19 04:28:42,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 464 transitions. [2021-11-19 04:28:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 04:28:42,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:42,155 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:42,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:42,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 04:28:42,378 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2031190993, now seen corresponding path program 2 times [2021-11-19 04:28:42,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:42,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079450031] [2021-11-19 04:28:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:42,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:42,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:42,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079450031] [2021-11-19 04:28:42,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079450031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:42,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905180347] [2021-11-19 04:28:42,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:28:42,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:42,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:42,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:42,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 04:28:42,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:28:42,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:42,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:28:42,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:42,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:42,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905180347] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:42,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:42,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-19 04:28:42,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863959883] [2021-11-19 04:28:42,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:42,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 04:28:42,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 04:28:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:28:42,795 INFO L87 Difference]: Start difference. First operand 386 states and 464 transitions. Second operand has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:43,129 INFO L93 Difference]: Finished difference Result 1586 states and 2023 transitions. [2021-11-19 04:28:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:28:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-19 04:28:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:43,140 INFO L225 Difference]: With dead ends: 1586 [2021-11-19 04:28:43,140 INFO L226 Difference]: Without dead ends: 1584 [2021-11-19 04:28:43,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:28:43,142 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 207 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:43,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 84 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-11-19 04:28:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1117. [2021-11-19 04:28:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1114 states have (on average 1.1840215439856374) internal successors, (1319), 1116 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1319 transitions. [2021-11-19 04:28:43,294 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1319 transitions. Word has length 38 [2021-11-19 04:28:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:43,295 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 1319 transitions. [2021-11-19 04:28:43,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1319 transitions. [2021-11-19 04:28:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 04:28:43,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:43,297 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-19 04:28:43,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:43,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-19 04:28:43,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:43,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1441176329, now seen corresponding path program 3 times [2021-11-19 04:28:43,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:43,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541545264] [2021-11-19 04:28:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:43,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:43,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:43,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541545264] [2021-11-19 04:28:43,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541545264] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:43,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449212145] [2021-11-19 04:28:43,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:28:43,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:43,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:43,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 04:28:43,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 04:28:43,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 04:28:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:44,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449212145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:44,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 36 [2021-11-19 04:28:44,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978654082] [2021-11-19 04:28:44,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:44,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-19 04:28:44,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-19 04:28:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 04:28:44,859 INFO L87 Difference]: Start difference. First operand 1117 states and 1319 transitions. Second operand has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:53,032 INFO L93 Difference]: Finished difference Result 9975 states and 11774 transitions. [2021-11-19 04:28:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2021-11-19 04:28:53,033 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-19 04:28:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:53,094 INFO L225 Difference]: With dead ends: 9975 [2021-11-19 04:28:53,095 INFO L226 Difference]: Without dead ends: 9974 [2021-11-19 04:28:53,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29069 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=13431, Invalid=47331, Unknown=0, NotChecked=0, Total=60762 [2021-11-19 04:28:53,116 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1171 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:53,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 41 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 04:28:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2021-11-19 04:28:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 3886. [2021-11-19 04:28:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3883 states have (on average 1.1949523564254443) internal successors, (4640), 3885 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 4640 transitions. [2021-11-19 04:28:53,855 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 4640 transitions. Word has length 45 [2021-11-19 04:28:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:53,855 INFO L470 AbstractCegarLoop]: Abstraction has 3886 states and 4640 transitions. [2021-11-19 04:28:53,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 4640 transitions. [2021-11-19 04:28:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 04:28:53,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:53,857 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:53,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-19 04:28:54,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-19 04:28:54,082 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2058787874, now seen corresponding path program 4 times [2021-11-19 04:28:54,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:54,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090346481] [2021-11-19 04:28:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:54,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 04:28:54,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:54,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090346481] [2021-11-19 04:28:54,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090346481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:54,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109467689] [2021-11-19 04:28:54,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:28:54,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:54,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:54,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 04:28:54,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:28:54,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 04:28:54,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 04:28:54,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:28:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 04:28:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109467689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:28:54,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:28:54,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2021-11-19 04:28:54,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832595390] [2021-11-19 04:28:54,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:28:54,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 04:28:54,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:28:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 04:28:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-19 04:28:54,817 INFO L87 Difference]: Start difference. First operand 3886 states and 4640 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:28:55,684 INFO L93 Difference]: Finished difference Result 6454 states and 7735 transitions. [2021-11-19 04:28:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:28:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-19 04:28:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:28:55,686 INFO L225 Difference]: With dead ends: 6454 [2021-11-19 04:28:55,686 INFO L226 Difference]: Without dead ends: 373 [2021-11-19 04:28:55,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2021-11-19 04:28:55,696 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:28:55,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 25 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:28:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-19 04:28:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 143. [2021-11-19 04:28:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 140 states have (on average 1.1357142857142857) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2021-11-19 04:28:55,743 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 55 [2021-11-19 04:28:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:28:55,744 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2021-11-19 04:28:55,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:28:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2021-11-19 04:28:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 04:28:55,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:28:55,745 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:28:55,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:28:55,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-19 04:28:55,961 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-19 04:28:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:28:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1009744626, now seen corresponding path program 5 times [2021-11-19 04:28:55,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:28:55,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206961519] [2021-11-19 04:28:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:28:55,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:28:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:28:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:56,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:28:56,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206961519] [2021-11-19 04:28:56,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206961519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:28:56,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371740551] [2021-11-19 04:28:56,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:28:56,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:28:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:28:56,199 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:28:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 04:28:56,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-19 04:28:56,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:28:56,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 04:28:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:28:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:28:56,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:31:04,395 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 04:31:04,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 04:31:04,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:31:04,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-19 04:31:04,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517528301] [2021-11-19 04:31:04,398 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 04:31:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 04:31:04,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:31:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 04:31:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=2110, Unknown=33, NotChecked=0, Total=2652 [2021-11-19 04:31:04,400 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:31:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:31:04,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 75.9s TimeCoverageRelationStatistics Valid=509, Invalid=2110, Unknown=33, NotChecked=0, Total=2652 [2021-11-19 04:31:04,402 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:31:04,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:31:04,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 04:31:04,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-19 04:31:04,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:31:04,603 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2413c956 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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) [2021-11-19 04:31:04,608 INFO L158 Benchmark]: Toolchain (without parser) took 166235.63ms. Allocated memory was 92.3MB in the beginning and 308.3MB in the end (delta: 216.0MB). Free memory was 59.5MB in the beginning and 203.9MB in the end (delta: -144.4MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2021-11-19 04:31:04,608 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:31:04,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.40ms. Allocated memory is still 92.3MB. Free memory was 59.4MB in the beginning and 69.8MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:31:04,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.35ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 68.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:31:04,610 INFO L158 Benchmark]: Boogie Preprocessor took 22.04ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 67.4MB in the end (delta: 920.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:31:04,610 INFO L158 Benchmark]: RCFGBuilder took 320.20ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 58.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:31:04,610 INFO L158 Benchmark]: TraceAbstraction took 165591.76ms. Allocated memory was 92.3MB in the beginning and 308.3MB in the end (delta: 216.0MB). Free memory was 58.2MB in the beginning and 203.9MB in the end (delta: -145.7MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2021-11-19 04:31:04,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.40ms. Allocated memory is still 92.3MB. Free memory was 59.4MB in the beginning and 69.8MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.35ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 68.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.04ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 67.4MB in the end (delta: 920.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.20ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 58.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 165591.76ms. Allocated memory was 92.3MB in the beginning and 308.3MB in the end (delta: 216.0MB). Free memory was 58.2MB in the beginning and 203.9MB in the end (delta: -145.7MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2413c956 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2413c956: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbcdcfad-039d-44b9-b885-cff421c33fa8/bin/uautomizer-ZXIjhQolGL/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2413c956