./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b7afe619831a9e012e7620d6e0b03d3495f1fd3efb2bdea6bfa4bb1568774e6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:56:54,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:56:54,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:56:54,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:56:54,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:56:54,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:56:54,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:56:54,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:56:54,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:56:54,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:56:54,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:56:54,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:56:54,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:56:54,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:56:54,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:56:54,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:56:54,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:56:54,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:56:54,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:56:54,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:56:54,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:56:54,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:56:54,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:56:54,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:56:54,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:56:54,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:56:54,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:56:54,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:56:54,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:56:54,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:56:54,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:56:54,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:56:54,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:56:54,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:56:54,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:56:54,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:56:54,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:56:54,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:56:54,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:56:54,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:56:54,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:56:54,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 19:56:54,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:56:54,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:56:54,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:56:54,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:56:54,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:56:54,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:56:54,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:56:54,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:56:54,679 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:56:54,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:56:54,679 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:56:54,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:56:54,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:56:54,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:56:54,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:56:54,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:56:54,681 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:56:54,681 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:56:54,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:56:54,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:56:54,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:56:54,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:56:54,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:56:54,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:56:54,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:56:54,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:56:54,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:56:54,687 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 19:56:54,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:56:54,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:56:54,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:56:54,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:56:54,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:56:54,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:56:54,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:56:54,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:56:54,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:56:54,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:56:54,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:56:54,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:56:54,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:56:54,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:56:54,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:56:54,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b7afe619831a9e012e7620d6e0b03d3495f1fd3efb2bdea6bfa4bb1568774e6 [2021-11-25 19:56:54,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:56:55,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:56:55,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:56:55,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:56:55,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:56:55,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-11-25 19:56:55,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/data/d7f2f2390/c9401057b47c453db391a1b707e83d84/FLAGdb3b22b5e [2021-11-25 19:56:55,760 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:56:55,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-11-25 19:56:55,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/data/d7f2f2390/c9401057b47c453db391a1b707e83d84/FLAGdb3b22b5e [2021-11-25 19:56:56,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/data/d7f2f2390/c9401057b47c453db391a1b707e83d84 [2021-11-25 19:56:56,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:56:56,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:56:56,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:56:56,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:56:56,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:56:56,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7331253f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56, skipping insertion in model container [2021-11-25 19:56:56,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:56:56,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:56:56,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/sv-benchmarks/c/bitvector/byte_add_2-1.i[1168,1181] [2021-11-25 19:56:56,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:56,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:56:56,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/sv-benchmarks/c/bitvector/byte_add_2-1.i[1168,1181] [2021-11-25 19:56:56,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:56,433 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:56:56,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56 WrapperNode [2021-11-25 19:56:56,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:56:56,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:56,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:56:56,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:56:56,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,492 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2021-11-25 19:56:56,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:56,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:56:56,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:56:56,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:56:56,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:56:56,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:56:56,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:56:56,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:56:56,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (1/1) ... [2021-11-25 19:56:56,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:56:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:56,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:56:56,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:56:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:56:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:56:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:56:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:56:56,736 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:56:56,738 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:56:57,106 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:56:57,189 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:56:57,189 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:56:57,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:56:57 BoogieIcfgContainer [2021-11-25 19:56:57,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:56:57,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:56:57,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:56:57,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:56:57,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:56:56" (1/3) ... [2021-11-25 19:56:57,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d01b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:56:57, skipping insertion in model container [2021-11-25 19:56:57,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:56" (2/3) ... [2021-11-25 19:56:57,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d01b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:56:57, skipping insertion in model container [2021-11-25 19:56:57,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:56:57" (3/3) ... [2021-11-25 19:56:57,203 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2021-11-25 19:56:57,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:56:57,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-25 19:56:57,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:56:57,278 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 [2021-11-25 19:56:57,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-25 19:56:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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) [2021-11-25 19:56:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 19:56:57,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:57,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 19:56:57,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash 290383, now seen corresponding path program 1 times [2021-11-25 19:56:57,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:57,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667308916] [2021-11-25 19:56:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:57,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:57,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:57,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667308916] [2021-11-25 19:56:57,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667308916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:57,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:57,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:56:57,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125003963] [2021-11-25 19:56:57,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:57,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:56:57,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:56:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:56:57,602 INFO L87 Difference]: Start difference. First operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-25 19:56:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:57,672 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-11-25 19:56:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:56:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-25 19:56:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:57,687 INFO L225 Difference]: With dead ends: 99 [2021-11-25 19:56:57,688 INFO L226 Difference]: Without dead ends: 60 [2021-11-25 19:56:57,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:56:57,698 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:57,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:56:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-25 19:56:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-25 19:56:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 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) [2021-11-25 19:56:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-25 19:56:57,759 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2021-11-25 19:56:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-25 19:56:57,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-25 19:56:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-25 19:56:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:56:57,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:57,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:57,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:56:57,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash 862708226, now seen corresponding path program 1 times [2021-11-25 19:56:57,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244614312] [2021-11-25 19:56:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:57,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:57,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:57,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244614312] [2021-11-25 19:56:57,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244614312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:57,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:57,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:57,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143469615] [2021-11-25 19:56:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:57,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:56:57,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:56:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:57,980 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-25 19:56:58,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:58,111 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-11-25 19:56:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:56:58,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-25 19:56:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:58,116 INFO L225 Difference]: With dead ends: 120 [2021-11-25 19:56:58,116 INFO L226 Difference]: Without dead ends: 81 [2021-11-25 19:56:58,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:56:58,119 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:58,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:56:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-25 19:56:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-11-25 19:56:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 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) [2021-11-25 19:56:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-11-25 19:56:58,151 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2021-11-25 19:56:58,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:58,152 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-11-25 19:56:58,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-25 19:56:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-11-25 19:56:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:56:58,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:58,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:58,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:56:58,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1303120393, now seen corresponding path program 1 times [2021-11-25 19:56:58,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:58,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831950743] [2021-11-25 19:56:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:58,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:58,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831950743] [2021-11-25 19:56:58,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831950743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:58,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:58,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:56:58,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072857250] [2021-11-25 19:56:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:58,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:56:58,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:56:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:58,327 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:56:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:58,534 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2021-11-25 19:56:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:56:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 [2021-11-25 19:56:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:58,536 INFO L225 Difference]: With dead ends: 111 [2021-11-25 19:56:58,536 INFO L226 Difference]: Without dead ends: 99 [2021-11-25 19:56:58,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:56:58,539 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 86 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:58,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 226 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:56:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-25 19:56:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2021-11-25 19:56:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 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) [2021-11-25 19:56:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2021-11-25 19:56:58,549 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2021-11-25 19:56:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:58,549 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2021-11-25 19:56:58,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:56:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2021-11-25 19:56:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 19:56:58,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:58,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:58,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:56:58,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash 521913395, now seen corresponding path program 1 times [2021-11-25 19:56:58,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:58,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407662635] [2021-11-25 19:56:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:58,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:58,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407662635] [2021-11-25 19:56:58,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407662635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:58,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:58,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:56:58,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328855310] [2021-11-25 19:56:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:58,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:56:58,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:56:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:58,695 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-25 19:56:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:58,875 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2021-11-25 19:56:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:56:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 [2021-11-25 19:56:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:58,881 INFO L225 Difference]: With dead ends: 118 [2021-11-25 19:56:58,881 INFO L226 Difference]: Without dead ends: 81 [2021-11-25 19:56:58,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:56:58,895 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 79 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:58,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 138 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:56:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-25 19:56:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-11-25 19:56:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 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) [2021-11-25 19:56:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-25 19:56:58,904 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2021-11-25 19:56:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:58,909 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-25 19:56:58,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-25 19:56:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-25 19:56:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:56:58,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:58,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:58,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:56:58,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1891165951, now seen corresponding path program 1 times [2021-11-25 19:56:58,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:58,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966430593] [2021-11-25 19:56:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:58,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:59,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:59,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966430593] [2021-11-25 19:56:59,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966430593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:59,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:59,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:56:59,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307633832] [2021-11-25 19:56:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:59,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:56:59,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:56:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:56:59,138 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-25 19:56:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:59,317 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2021-11-25 19:56:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:56:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 [2021-11-25 19:56:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:59,321 INFO L225 Difference]: With dead ends: 156 [2021-11-25 19:56:59,322 INFO L226 Difference]: Without dead ends: 118 [2021-11-25 19:56:59,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:59,331 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:59,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 143 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:56:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-25 19:56:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2021-11-25 19:56:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 87 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) [2021-11-25 19:56:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2021-11-25 19:56:59,347 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 24 [2021-11-25 19:56:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:59,347 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2021-11-25 19:56:59,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-25 19:56:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2021-11-25 19:56:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:56:59,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:59,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:59,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:56:59,350 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 747339762, now seen corresponding path program 1 times [2021-11-25 19:56:59,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:59,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620348297] [2021-11-25 19:56:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:59,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:56:59,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620348297] [2021-11-25 19:56:59,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620348297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:59,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:59,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:56:59,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659640634] [2021-11-25 19:56:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:59,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:56:59,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:56:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:56:59,578 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-25 19:56:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:59,706 INFO L93 Difference]: Finished difference Result 244 states and 307 transitions. [2021-11-25 19:56:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:56:59,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-11-25 19:56:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:59,708 INFO L225 Difference]: With dead ends: 244 [2021-11-25 19:56:59,708 INFO L226 Difference]: Without dead ends: 180 [2021-11-25 19:56:59,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:56:59,713 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 96 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:59,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 173 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:56:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-25 19:56:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 101. [2021-11-25 19:56:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.28) internal successors, (128), 100 states have internal predecessors, (128), 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) [2021-11-25 19:56:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-25 19:56:59,737 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 30 [2021-11-25 19:56:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-25 19:56:59,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-11-25 19:56:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-25 19:56:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:56:59,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:59,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:59,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:56:59,744 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:56:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1296784938, now seen corresponding path program 1 times [2021-11-25 19:56:59,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010814287] [2021-11-25 19:56:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:59,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:57:00,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010814287] [2021-11-25 19:57:00,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010814287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:00,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:00,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:57:00,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981789589] [2021-11-25 19:57:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:00,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:57:00,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:57:00,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:57:00,035 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-25 19:57:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:00,166 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2021-11-25 19:57:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:57:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 30 [2021-11-25 19:57:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:00,168 INFO L225 Difference]: With dead ends: 250 [2021-11-25 19:57:00,168 INFO L226 Difference]: Without dead ends: 187 [2021-11-25 19:57:00,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:57:00,170 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 78 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:00,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 164 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-25 19:57:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 113. [2021-11-25 19:57:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 112 states have internal predecessors, (141), 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) [2021-11-25 19:57:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 141 transitions. [2021-11-25 19:57:00,180 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 141 transitions. Word has length 30 [2021-11-25 19:57:00,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:00,181 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 141 transitions. [2021-11-25 19:57:00,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-25 19:57:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 141 transitions. [2021-11-25 19:57:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:57:00,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:00,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:00,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:57:00,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1698043964, now seen corresponding path program 1 times [2021-11-25 19:57:00,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:00,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692158179] [2021-11-25 19:57:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:00,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:00,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:00,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692158179] [2021-11-25 19:57:00,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692158179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911480003] [2021-11-25 19:57:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:00,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:00,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:00,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:00,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:57:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:00,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:57:00,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:57:00,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:57:01,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911480003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:01,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477724115] [2021-11-25 19:57:01,637 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-25 19:57:01,637 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:01,645 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:01,653 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:01,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:01,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:57:03,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [477724115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:03,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:57:03,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 7, 8] total 26 [2021-11-25 19:57:03,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062197046] [2021-11-25 19:57:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:03,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:57:03,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:57:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:57:03,730 INFO L87 Difference]: Start difference. First operand 113 states and 141 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-11-25 19:57:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:04,577 INFO L93 Difference]: Finished difference Result 341 states and 425 transitions. [2021-11-25 19:57:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:57:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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 33 [2021-11-25 19:57:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:04,583 INFO L225 Difference]: With dead ends: 341 [2021-11-25 19:57:04,583 INFO L226 Difference]: Without dead ends: 254 [2021-11-25 19:57:04,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:57:04,585 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 247 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:04,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 342 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:57:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-25 19:57:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 102. [2021-11-25 19:57:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 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) [2021-11-25 19:57:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2021-11-25 19:57:04,602 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 33 [2021-11-25 19:57:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:04,602 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2021-11-25 19:57:04,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-11-25 19:57:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2021-11-25 19:57:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:57:04,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:04,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:04,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:04,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:04,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 939954949, now seen corresponding path program 1 times [2021-11-25 19:57:04,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:04,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588429892] [2021-11-25 19:57:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:04,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:05,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588429892] [2021-11-25 19:57:05,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588429892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:05,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59242722] [2021-11-25 19:57:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:05,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:05,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:05,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:57:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:05,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:57:05,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:57:05,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:57:05,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59242722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:05,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518344502] [2021-11-25 19:57:05,764 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-25 19:57:05,765 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:05,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:05,765 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:05,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:05,993 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:57:08,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [518344502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:08,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:57:08,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 7, 8] total 26 [2021-11-25 19:57:08,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627370842] [2021-11-25 19:57:08,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:08,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:57:08,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:08,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:57:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:57:08,146 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-11-25 19:57:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:09,511 INFO L93 Difference]: Finished difference Result 405 states and 503 transitions. [2021-11-25 19:57:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:57:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 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 [2021-11-25 19:57:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:09,515 INFO L225 Difference]: With dead ends: 405 [2021-11-25 19:57:09,515 INFO L226 Difference]: Without dead ends: 329 [2021-11-25 19:57:09,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-11-25 19:57:09,517 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 230 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:09,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 705 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 19:57:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-25 19:57:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 102. [2021-11-25 19:57:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 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) [2021-11-25 19:57:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2021-11-25 19:57:09,526 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 36 [2021-11-25 19:57:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:09,526 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2021-11-25 19:57:09,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-11-25 19:57:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2021-11-25 19:57:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:57:09,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:09,528 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:09,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:09,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 19:57:09,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -304007516, now seen corresponding path program 1 times [2021-11-25 19:57:09,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705344045] [2021-11-25 19:57:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:09,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:09,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705344045] [2021-11-25 19:57:09,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705344045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:09,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35299563] [2021-11-25 19:57:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:09,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:09,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:09,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:57:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:10,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:57:10,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:10,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:57:10,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35299563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:10,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:57:10,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 12 [2021-11-25 19:57:10,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098544613] [2021-11-25 19:57:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:10,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:57:10,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:57:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:57:10,439 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-11-25 19:57:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:10,737 INFO L93 Difference]: Finished difference Result 249 states and 313 transitions. [2021-11-25 19:57:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:57:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 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 [2021-11-25 19:57:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:10,739 INFO L225 Difference]: With dead ends: 249 [2021-11-25 19:57:10,739 INFO L226 Difference]: Without dead ends: 186 [2021-11-25 19:57:10,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:57:10,741 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 149 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:10,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 309 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:57:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-25 19:57:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2021-11-25 19:57:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2307692307692308) internal successors, (208), 169 states have internal predecessors, (208), 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) [2021-11-25 19:57:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2021-11-25 19:57:10,752 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 36 [2021-11-25 19:57:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:10,752 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2021-11-25 19:57:10,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-11-25 19:57:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2021-11-25 19:57:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 19:57:10,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:10,754 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:10,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:10,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:57:10,971 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -248677343, now seen corresponding path program 1 times [2021-11-25 19:57:10,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:10,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447049263] [2021-11-25 19:57:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:10,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:11,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447049263] [2021-11-25 19:57:11,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447049263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511743944] [2021-11-25 19:57:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:11,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:11,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:57:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:11,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:57:11,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:11,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:57:11,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511743944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:11,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:57:11,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 11 [2021-11-25 19:57:11,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344344348] [2021-11-25 19:57:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:11,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:57:11,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:57:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:57:11,668 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-11-25 19:57:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:11,913 INFO L93 Difference]: Finished difference Result 372 states and 466 transitions. [2021-11-25 19:57:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:57:11,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 38 [2021-11-25 19:57:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:11,916 INFO L225 Difference]: With dead ends: 372 [2021-11-25 19:57:11,916 INFO L226 Difference]: Without dead ends: 253 [2021-11-25 19:57:11,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:57:11,917 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 235 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:11,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 191 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:57:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-25 19:57:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 221. [2021-11-25 19:57:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.240909090909091) internal successors, (273), 220 states have internal predecessors, (273), 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) [2021-11-25 19:57:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 273 transitions. [2021-11-25 19:57:11,930 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 273 transitions. Word has length 38 [2021-11-25 19:57:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:11,930 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 273 transitions. [2021-11-25 19:57:11,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-11-25 19:57:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 273 transitions. [2021-11-25 19:57:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 19:57:11,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:11,932 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:11,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:12,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:12,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2033212262, now seen corresponding path program 1 times [2021-11-25 19:57:12,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:12,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931527608] [2021-11-25 19:57:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:12,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:57:12,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931527608] [2021-11-25 19:57:12,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931527608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:12,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:12,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:57:12,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318427672] [2021-11-25 19:57:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:12,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:12,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:12,202 INFO L87 Difference]: Start difference. First operand 221 states and 273 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-11-25 19:57:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:12,221 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2021-11-25 19:57:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 41 [2021-11-25 19:57:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:12,225 INFO L225 Difference]: With dead ends: 228 [2021-11-25 19:57:12,225 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 19:57:12,226 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 [2021-11-25 19:57:12,227 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:12,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:57:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 19:57:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-25 19:57:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.205298013245033) internal successors, (182), 151 states have internal predecessors, (182), 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) [2021-11-25 19:57:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 182 transitions. [2021-11-25 19:57:12,237 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 182 transitions. Word has length 41 [2021-11-25 19:57:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:12,237 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 182 transitions. [2021-11-25 19:57:12,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-11-25 19:57:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 182 transitions. [2021-11-25 19:57:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 19:57:12,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:12,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:12,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:57:12,240 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -584225881, now seen corresponding path program 1 times [2021-11-25 19:57:12,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:12,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559715114] [2021-11-25 19:57:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:12,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:12,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:12,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559715114] [2021-11-25 19:57:12,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559715114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:12,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906264848] [2021-11-25 19:57:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:12,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:12,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:12,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:12,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:57:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:12,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:57:12,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:57:12,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:57:12,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906264848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:12,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:57:12,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-25 19:57:12,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818157111] [2021-11-25 19:57:12,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:12,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:57:12,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:57:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:57:12,674 INFO L87 Difference]: Start difference. First operand 152 states and 182 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2021-11-25 19:57:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:12,736 INFO L93 Difference]: Finished difference Result 357 states and 445 transitions. [2021-11-25 19:57:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:57:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 44 [2021-11-25 19:57:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:12,739 INFO L225 Difference]: With dead ends: 357 [2021-11-25 19:57:12,739 INFO L226 Difference]: Without dead ends: 231 [2021-11-25 19:57:12,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:57:12,743 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 28 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:12,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 134 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-11-25 19:57:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-25 19:57:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 188. [2021-11-25 19:57:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.2620320855614973) internal successors, (236), 187 states have internal predecessors, (236), 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) [2021-11-25 19:57:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2021-11-25 19:57:12,757 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 44 [2021-11-25 19:57:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:12,757 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2021-11-25 19:57:12,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2021-11-25 19:57:12,758 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2021-11-25 19:57:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:57:12,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:12,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:12,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 19:57:12,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:57:12,980 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 37142040, now seen corresponding path program 1 times [2021-11-25 19:57:12,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:12,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790565276] [2021-11-25 19:57:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:12,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:57:13,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790565276] [2021-11-25 19:57:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790565276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721620411] [2021-11-25 19:57:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:13,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:13,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:13,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:13,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:57:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:13,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:57:13,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:57:13,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:57:13,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721620411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:13,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:57:13,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-25 19:57:13,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183782121] [2021-11-25 19:57:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:13,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:57:13,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:57:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:57:13,553 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-11-25 19:57:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:13,710 INFO L93 Difference]: Finished difference Result 396 states and 510 transitions. [2021-11-25 19:57:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:57:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 50 [2021-11-25 19:57:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:13,712 INFO L225 Difference]: With dead ends: 396 [2021-11-25 19:57:13,712 INFO L226 Difference]: Without dead ends: 235 [2021-11-25 19:57:13,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:57:13,714 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 97 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:13,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 116 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-25 19:57:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 194. [2021-11-25 19:57:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 193 states have internal predecessors, (232), 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) [2021-11-25 19:57:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2021-11-25 19:57:13,726 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 50 [2021-11-25 19:57:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:13,726 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2021-11-25 19:57:13,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-11-25 19:57:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2021-11-25 19:57:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:57:13,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:13,728 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:13,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:13,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 19:57:13,942 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-25 19:57:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:13,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1002635263, now seen corresponding path program 1 times [2021-11-25 19:57:13,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:13,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770432246] [2021-11-25 19:57:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:13,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:57:14,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770432246] [2021-11-25 19:57:14,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770432246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:14,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312290387] [2021-11-25 19:57:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:14,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:14,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:14,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c350e737-1d4d-4a07-8a78-601753c4960d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:57:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:14,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:57:14,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:57:14,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:57:14,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312290387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:14,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1174242275] [2021-11-25 19:57:14,780 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-25 19:57:14,780 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:14,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:14,781 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:14,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs