./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2b89ce5b96ce55081609675201b2a9a116c2941a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:50,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:50,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:50,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:50,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:50,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:50,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:50,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:50,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:50,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:50,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:50,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:50,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:50,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:50,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:50,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:50,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:50,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:50,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:50,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:50,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:50,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:50,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:50,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:50,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:50,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:50,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:50,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:50,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:50,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:50,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:50,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:50,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:50,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:50,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:50,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:50,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:50,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:50,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:50,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:50,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:50,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:40:50,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:50,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:50,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:50,751 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:50,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:50,752 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:50,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:40:50,753 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:50,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:50,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:40:50,754 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:40:50,754 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:50,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:40:50,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:40:50,755 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:40:50,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:50,756 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:40:50,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:40:50,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:50,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:40:50,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:50,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:40:50,758 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:40:50,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:40:50,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:50,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:40:50,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:50,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:50,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:50,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:50,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:50,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:40:50,761 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:40:50,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:40:50,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:40:50,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:50,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:50,762 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_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b89ce5b96ce55081609675201b2a9a116c2941a [2021-10-13 07:40:51,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:51,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:51,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:51,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:51,122 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:51,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted/Benghazi.c [2021-10-13 07:40:51,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/data/714152089/e3a46f9740494f07b6cb99eb2c8a4af0/FLAG9ed6fb012 [2021-10-13 07:40:51,677 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:51,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/sv-benchmarks/c/termination-crafted/Benghazi.c [2021-10-13 07:40:51,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/data/714152089/e3a46f9740494f07b6cb99eb2c8a4af0/FLAG9ed6fb012 [2021-10-13 07:40:52,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/data/714152089/e3a46f9740494f07b6cb99eb2c8a4af0 [2021-10-13 07:40:52,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:52,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:52,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:52,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:52,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:52,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa6f453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52, skipping insertion in model container [2021-10-13 07:40:52,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:52,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:52,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:52,265 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:52,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:52,289 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:52,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52 WrapperNode [2021-10-13 07:40:52,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:52,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:52,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:52,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:52,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:52,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:52,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:52,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:52,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:52,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:52,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:52,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:52,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (1/1) ... [2021-10-13 07:40:52,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:52,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:52,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:52,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:52,614 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:40:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:52 BoogieIcfgContainer [2021-10-13 07:40:52,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:52,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:52,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:52,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:52,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:52" (1/3) ... [2021-10-13 07:40:52,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19666d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:52, skipping insertion in model container [2021-10-13 07:40:52,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:52" (2/3) ... [2021-10-13 07:40:52,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19666d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:52, skipping insertion in model container [2021-10-13 07:40:52,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:52" (3/3) ... [2021-10-13 07:40:52,624 INFO L111 eAbstractionObserver]: Analyzing ICFG Benghazi.c [2021-10-13 07:40:52,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:52,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:40:52,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:52,695 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, mConcurrency=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 [2021-10-13 07:40:52,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:40:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 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) [2021-10-13 07:40:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:40:52,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:52,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:40:52,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-13 07:40:52,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:52,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704942792] [2021-10-13 07:40:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:52,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:52,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:52,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704942792] [2021-10-13 07:40:52,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704942792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:52,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:52,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:40:52,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814451855] [2021-10-13 07:40:52,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:52,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:52,967 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 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) Second operand has 3 states, 2 states have (on average 1.5) 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) [2021-10-13 07:40:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,032 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-13 07:40:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2021-10-13 07:40:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,041 INFO L225 Difference]: With dead ends: 20 [2021-10-13 07:40:53,041 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 07:40:53,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 07:40:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-13 07:40:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-13 07:40:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-13 07:40:53,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-10-13 07:40:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,078 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-13 07:40:53,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2021-10-13 07:40:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-13 07:40:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:53,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:53,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:40:53,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,086 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-13 07:40:53,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359209723] [2021-10-13 07:40:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359209723] [2021-10-13 07:40:53,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359209723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:53,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:53,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:53,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136753195] [2021-10-13 07:40:53,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:53,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:53,148 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 07:40:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,191 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-13 07:40:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:40:53,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-13 07:40:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,193 INFO L225 Difference]: With dead ends: 22 [2021-10-13 07:40:53,194 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 07:40:53,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 07:40:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-13 07:40:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-13 07:40:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 07:40:53,201 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 4 [2021-10-13 07:40:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,202 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 07:40:53,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 07:40:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 07:40:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:40:53,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:40:53,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:40:53,203 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-10-13 07:40:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142789845] [2021-10-13 07:40:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142789845] [2021-10-13 07:40:53,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142789845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:53,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:53,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:40:53,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640764581] [2021-10-13 07:40:53,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:53,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:53,257 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,273 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-13 07:40:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:40:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,277 INFO L225 Difference]: With dead ends: 24 [2021-10-13 07:40:53,277 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:40:53,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:40:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-13 07:40:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 17 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) [2021-10-13 07:40:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 07:40:53,282 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 5 [2021-10-13 07:40:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,282 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 07:40:53,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 07:40:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:40:53,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:40:53,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:40:53,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,285 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-13 07:40:53,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000377248] [2021-10-13 07:40:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000377248] [2021-10-13 07:40:53,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000377248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:53,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:53,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:40:53,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816979055] [2021-10-13 07:40:53,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:40:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:40:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:53,344 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,359 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-13 07:40:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:40:53,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:40:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,360 INFO L225 Difference]: With dead ends: 24 [2021-10-13 07:40:53,361 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:40:53,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:40:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:40:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-10-13 07:40:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-10-13 07:40:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 07:40:53,378 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2021-10-13 07:40:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,378 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 07:40:53,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 07:40:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:40:53,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:53,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:40:53,380 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1366846491, now seen corresponding path program 1 times [2021-10-13 07:40:53,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599369927] [2021-10-13 07:40:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599369927] [2021-10-13 07:40:53,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599369927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:53,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:53,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:53,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003812367] [2021-10-13 07:40:53,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:53,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:53,410 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 07:40:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,458 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-13 07:40:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:40:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-10-13 07:40:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,460 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:40:53,460 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:40:53,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:40:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-10-13 07:40:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 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) [2021-10-13 07:40:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-13 07:40:53,464 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-10-13 07:40:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,464 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-13 07:40:53,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 07:40:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-13 07:40:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:40:53,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:53,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:40:53,466 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,467 INFO L82 PathProgramCache]: Analyzing trace with hash 577431791, now seen corresponding path program 1 times [2021-10-13 07:40:53,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488128236] [2021-10-13 07:40:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488128236] [2021-10-13 07:40:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488128236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:53,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:53,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:40:53,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069099654] [2021-10-13 07:40:53,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:40:53,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:40:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:40:53,512 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:53,551 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-13 07:40:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:40:53,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:40:53,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:53,561 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:40:53,561 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:40:53,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:40:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:40:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-13 07:40:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-10-13 07:40:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-13 07:40:53,569 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2021-10-13 07:40:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:53,570 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-13 07:40:53,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-13 07:40:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:40:53,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:53,571 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:53,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:40:53,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2021-10-13 07:40:53,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:53,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112597498] [2021-10-13 07:40:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:53,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112597498] [2021-10-13 07:40:53,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112597498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:40:53,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108045974] [2021-10-13 07:40:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:53,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:53,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:53,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:40:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:53,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:40:53,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:53,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108045974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:53,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390061877] [2021-10-13 07:40:54,001 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:40:54,002 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:54,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:54,011 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:54,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:54,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:54,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:54,088 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:40:54,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:54,114 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:40:54,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:40:54,120 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-13 07:40:54,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:40:54,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:54,218 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-13 07:40:54,225 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-13 07:40:54,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:54,235 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-13 07:40:54,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:54,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:54,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:54,294 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:54,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,299 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:54,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,327 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:40:54,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:40:54,338 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:40:54,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:40:54,346 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:40:54,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:54,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:54,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:54,379 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:54,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,384 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:54,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:54,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:54,410 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:54,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,422 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:54,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:54,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:54,505 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:40:54,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [390061877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:54,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:40:54,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 16 [2021-10-13 07:40:54,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649448901] [2021-10-13 07:40:54,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:40:54,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:40:54,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:40:54,829 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:54,888 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-13 07:40:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:40:54,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:40:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:54,891 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:40:54,891 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 07:40:54,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 380.8ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:40:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 07:40:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-13 07:40:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-13 07:40:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-13 07:40:54,897 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-10-13 07:40:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:54,897 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-13 07:40:54,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-13 07:40:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:40:54,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:54,898 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:54,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:55,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:40:55,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1343116429, now seen corresponding path program 1 times [2021-10-13 07:40:55,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:55,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665886250] [2021-10-13 07:40:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:55,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:55,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:55,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665886250] [2021-10-13 07:40:55,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665886250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:40:55,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44529505] [2021-10-13 07:40:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:55,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:55,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:55,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:40:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:55,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:40:55,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:55,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:55,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44529505] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:55,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [59574869] [2021-10-13 07:40:55,360 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:40:55,361 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:55,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:55,361 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:55,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:55,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:55,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:55,375 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:40:55,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:55,379 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:40:55,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:40:55,383 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-13 07:40:55,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:40:55,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:55,423 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-13 07:40:55,430 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-13 07:40:55,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:55,449 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-13 07:40:55,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:55,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:55,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:55,496 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:55,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,500 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:55,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,524 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:40:55,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:40:55,540 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:40:55,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:40:55,548 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:40:55,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:55,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:55,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:55,591 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:55,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,595 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:55,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:55,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:55,609 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:55,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,616 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:55,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:55,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:55,654 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:40:55,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:40:55,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:40:55,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-13 07:40:55,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247021066] [2021-10-13 07:40:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:40:55,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:40:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:40:55,998 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2021-10-13 07:40:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:56,127 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-10-13 07:40:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:40:56,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 12 [2021-10-13 07:40:56,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:56,128 INFO L225 Difference]: With dead ends: 37 [2021-10-13 07:40:56,128 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:40:56,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 435.1ms TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:40:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:40:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-13 07:40:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:40:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-13 07:40:56,133 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2021-10-13 07:40:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:56,133 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-13 07:40:56,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2021-10-13 07:40:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-13 07:40:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:40:56,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:56,137 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1] [2021-10-13 07:40:56,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:56,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 07:40:56,338 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash 992275125, now seen corresponding path program 1 times [2021-10-13 07:40:56,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:56,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203389926] [2021-10-13 07:40:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:56,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:56,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:56,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203389926] [2021-10-13 07:40:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203389926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:40:56,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270082514] [2021-10-13 07:40:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:56,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:56,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:56,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:40:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:56,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:40:56,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:56,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:56,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270082514] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:56,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114396075] [2021-10-13 07:40:56,677 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:40:56,677 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:56,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:56,678 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:56,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:56,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:56,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:56,692 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:40:56,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:56,695 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:40:56,697 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-13 07:40:56,698 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-13 07:40:56,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:40:56,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:56,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:56,716 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-10-13 07:40:56,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:56,722 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-13 07:40:56,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:40:56,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:56,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:56,760 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:56,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,765 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:56,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,783 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:40:56,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:40:56,802 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:40:56,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:40:56,810 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:40:56,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:40:56,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:56,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:56,835 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:56,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,839 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:56,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:56,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:56,851 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:40:56,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,856 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:40:56,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:40:56,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:56,884 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:40:57,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:40:57,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:40:57,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-10-13 07:40:57,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67841165] [2021-10-13 07:40:57,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:40:57,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:40:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:40:57,237 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-10-13 07:40:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:57,517 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-10-13 07:40:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:40:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 28 [2021-10-13 07:40:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:57,518 INFO L225 Difference]: With dead ends: 68 [2021-10-13 07:40:57,518 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 07:40:57,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 571.7ms TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 07:40:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 07:40:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-10-13 07:40:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 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) [2021-10-13 07:40:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-10-13 07:40:57,530 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 28 [2021-10-13 07:40:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:57,531 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-10-13 07:40:57,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-10-13 07:40:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-10-13 07:40:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 07:40:57,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:57,535 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1] [2021-10-13 07:40:57,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:57,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 07:40:57,746 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:40:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1090881907, now seen corresponding path program 2 times [2021-10-13 07:40:57,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:57,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333660972] [2021-10-13 07:40:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:57,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:57,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:57,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333660972] [2021-10-13 07:40:57,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333660972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:40:57,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395577238] [2021-10-13 07:40:57,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:40:57,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:57,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:57,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:57,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:40:57,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 07:40:57,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:40:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:40:57,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 33 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:58,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:59,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395577238] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:59,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782051223] [2021-10-13 07:40:59,131 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:40:59,131 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:59,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:59,132 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:59,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:59,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:59,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:40:59,143 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:40:59,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:40:59,147 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:40:59,151 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-13 07:40:59,152 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-13 07:40:59,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:40:59,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,161 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-10-13 07:40:59,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:40:59,166 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-10-13 07:40:59,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:40:59,170 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:40:59,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-13 07:40:59,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,191 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:40:59,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:59,194 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:40:59,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:40:59,205 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-13 07:40:59,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:40:59,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,217 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-10-13 07:40:59,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-13 07:40:59,226 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-10-13 07:40:59,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:40:59,230 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:40:59,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:40:59,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:59,242 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:40:59,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:59,245 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:40:59,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:40:59,248 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-13 07:40:59,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:40:59,253 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:40:59,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:40:59,266 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:40:59,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:40:59,269 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:40:59,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:40:59,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:40:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 44 [2021-10-13 07:40:59,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207749893] [2021-10-13 07:40:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 07:40:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 07:40:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2435, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 07:40:59,861 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 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) [2021-10-13 07:41:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:02,207 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-10-13 07:41:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 07:41:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 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 54 [2021-10-13 07:41:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:02,209 INFO L225 Difference]: With dead ends: 74 [2021-10-13 07:41:02,209 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 07:41:02,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 2967.6ms TimeCoverageRelationStatistics Valid=1514, Invalid=7416, Unknown=0, NotChecked=0, Total=8930 [2021-10-13 07:41:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 07:41:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2021-10-13 07:41:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 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) [2021-10-13 07:41:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-10-13 07:41:02,245 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2021-10-13 07:41:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:02,245 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-10-13 07:41:02,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 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) [2021-10-13 07:41:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-10-13 07:41:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 07:41:02,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:02,246 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1] [2021-10-13 07:41:02,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:02,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:02,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:41:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:02,448 INFO L82 PathProgramCache]: Analyzing trace with hash 995912677, now seen corresponding path program 2 times [2021-10-13 07:41:02,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:02,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697654688] [2021-10-13 07:41:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:02,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:02,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:02,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697654688] [2021-10-13 07:41:02,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697654688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:41:02,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3520686] [2021-10-13 07:41:02,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:41:02,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:02,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:02,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:02,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:41:02,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-13 07:41:02,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:41:02,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 07:41:02,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:03,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:05,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3520686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:05,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222099920] [2021-10-13 07:41:05,130 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:41:05,130 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:41:05,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:41:05,130 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:41:05,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:41:05,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:05,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:41:05,139 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:41:05,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:05,142 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:41:05,143 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-13 07:41:05,144 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-13 07:41:05,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:41:05,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,153 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-10-13 07:41:05,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:41:05,157 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-10-13 07:41:05,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:41:05,161 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:41:05,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-13 07:41:05,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,178 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:41:05,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:41:05,181 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:41:05,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:41:05,197 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-13 07:41:05,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:41:05,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,209 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-10-13 07:41:05,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-13 07:41:05,213 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-10-13 07:41:05,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:41:05,217 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:41:05,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 07:41:05,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:05,228 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:41:05,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:41:05,230 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:41:05,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:41:05,233 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-13 07:41:05,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:41:05,237 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-13 07:41:05,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-13 07:41:05,241 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-13 07:41:05,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:41:05,244 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:41:06,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:41:06,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:41:06,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 24] total 62 [2021-10-13 07:41:06,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629519041] [2021-10-13 07:41:06,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 07:41:06,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 07:41:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4502, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 07:41:06,064 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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) [2021-10-13 07:41:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:10,935 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2021-10-13 07:41:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 07:41:10,936 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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 63 [2021-10-13 07:41:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:10,937 INFO L225 Difference]: With dead ends: 128 [2021-10-13 07:41:10,937 INFO L226 Difference]: Without dead ends: 127 [2021-10-13 07:41:10,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3876 ImplicationChecksByTransitivity, 6336.6ms TimeCoverageRelationStatistics Valid=2879, Invalid=13377, Unknown=0, NotChecked=0, Total=16256 [2021-10-13 07:41:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-13 07:41:10,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-13 07:41:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 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) [2021-10-13 07:41:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-10-13 07:41:10,956 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 63 [2021-10-13 07:41:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:10,956 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-10-13 07:41:10,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 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) [2021-10-13 07:41:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-10-13 07:41:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-13 07:41:10,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:10,961 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 1, 1] [2021-10-13 07:41:10,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 07:41:11,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:11,174 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:41:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1733496651, now seen corresponding path program 3 times [2021-10-13 07:41:11,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:11,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378364714] [2021-10-13 07:41:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:11,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:11,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:11,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378364714] [2021-10-13 07:41:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378364714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:41:11,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112218816] [2021-10-13 07:41:11,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:41:11,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:11,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:11,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:41:11,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:41:11,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:41:11,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 07:41:11,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:12,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:12,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112218816] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:12,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010503707] [2021-10-13 07:41:12,996 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:41:12,997 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:41:12,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:41:12,997 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:41:12,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:41:13,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:13,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:41:13,009 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:41:13,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:13,011 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:41:13,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:13,016 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-13 07:41:13,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:13,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:13,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:41:13,037 INFO L180 QuantifierPusher]: treesize reduction 10, result has 88.8 percent of original size [2021-10-13 07:41:13,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:41:13,041 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.4 percent of original size [2021-10-13 07:41:13,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 07:41:13,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:13,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:13,080 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:13,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,082 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:13,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,102 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:41:13,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:41:13,107 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:41:13,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:41:13,120 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:41:13,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:41:13,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:13,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:13,142 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:13,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,146 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:13,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:13,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:13,154 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:13,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,157 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:13,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:13,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:13,184 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:41:13,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:41:13,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:41:13,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2021-10-13 07:41:13,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044311547] [2021-10-13 07:41:13,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-13 07:41:13,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-13 07:41:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 07:41:13,586 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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) [2021-10-13 07:41:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:15,329 INFO L93 Difference]: Finished difference Result 261 states and 279 transitions. [2021-10-13 07:41:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-13 07:41:15,330 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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 126 [2021-10-13 07:41:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:15,332 INFO L225 Difference]: With dead ends: 261 [2021-10-13 07:41:15,332 INFO L226 Difference]: Without dead ends: 260 [2021-10-13 07:41:15,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 2366.5ms TimeCoverageRelationStatistics Valid=3597, Invalid=10209, Unknown=0, NotChecked=0, Total=13806 [2021-10-13 07:41:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-13 07:41:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-10-13 07:41:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0038610038610039) internal successors, (260), 259 states have internal predecessors, (260), 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) [2021-10-13 07:41:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2021-10-13 07:41:15,382 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 126 [2021-10-13 07:41:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:15,383 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2021-10-13 07:41:15,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 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) [2021-10-13 07:41:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2021-10-13 07:41:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-10-13 07:41:15,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:15,393 INFO L512 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 36, 36, 1, 1] [2021-10-13 07:41:15,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:15,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-13 07:41:15,598 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:41:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:15,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1259495397, now seen corresponding path program 4 times [2021-10-13 07:41:15,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:15,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051505378] [2021-10-13 07:41:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:15,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:16,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:16,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051505378] [2021-10-13 07:41:16,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051505378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:41:16,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907108545] [2021-10-13 07:41:16,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 07:41:16,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:16,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:16,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:41:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:17,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 07:41:17,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:17,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:20,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907108545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:20,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705485008] [2021-10-13 07:41:20,430 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:41:20,430 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:41:20,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:41:20,431 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:41:20,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:41:20,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:20,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:41:20,440 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:41:20,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:20,442 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:41:20,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:20,444 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-13 07:41:20,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:20,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:20,462 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-13 07:41:20,464 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-13 07:41:20,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:41:20,467 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-13 07:41:20,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:41:20,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:20,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:20,486 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:20,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,488 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:20,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,503 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:41:20,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:41:20,507 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:41:20,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:41:20,510 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:41:20,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:41:20,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:20,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:20,524 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:20,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,526 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:20,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:20,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:20,537 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:20,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,541 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:20,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:20,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:20,560 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:41:21,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:41:21,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:41:21,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2021-10-13 07:41:21,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114188072] [2021-10-13 07:41:21,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-13 07:41:21,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-13 07:41:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=12479, Unknown=0, NotChecked=0, Total=14762 [2021-10-13 07:41:21,077 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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) [2021-10-13 07:41:26,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:26,845 INFO L93 Difference]: Finished difference Result 520 states and 556 transitions. [2021-10-13 07:41:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-13 07:41:26,846 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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 259 [2021-10-13 07:41:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:26,849 INFO L225 Difference]: With dead ends: 520 [2021-10-13 07:41:26,849 INFO L226 Difference]: Without dead ends: 519 [2021-10-13 07:41:26,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13870 ImplicationChecksByTransitivity, 7695.9ms TimeCoverageRelationStatistics Valid=14679, Invalid=38913, Unknown=0, NotChecked=0, Total=53592 [2021-10-13 07:41:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-10-13 07:41:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-10-13 07:41:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.001930501930502) internal successors, (519), 518 states have internal predecessors, (519), 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) [2021-10-13 07:41:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 519 transitions. [2021-10-13 07:41:26,881 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 519 transitions. Word has length 259 [2021-10-13 07:41:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:26,881 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 519 transitions. [2021-10-13 07:41:26,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 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) [2021-10-13 07:41:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 519 transitions. [2021-10-13 07:41:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-10-13 07:41:26,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:26,893 INFO L512 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 73, 73, 1, 1] [2021-10-13 07:41:26,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-13 07:41:27,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-13 07:41:27,108 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:41:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1537083573, now seen corresponding path program 5 times [2021-10-13 07:41:27,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:27,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767281495] [2021-10-13 07:41:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:27,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 0 proven. 18834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:30,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:30,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767281495] [2021-10-13 07:41:30,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767281495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:41:30,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824266205] [2021-10-13 07:41:30,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:41:30,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:30,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:30,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:41:31,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-13 07:41:31,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:41:31,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 07:41:31,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-10-13 07:41:34,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-10-13 07:41:44,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824266205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:44,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [209429857] [2021-10-13 07:41:44,904 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 07:41:44,904 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:41:44,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:41:44,904 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:41:44,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:41:44,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:44,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:41:44,912 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-13 07:41:44,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:44,913 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-13 07:41:44,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:44,916 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-13 07:41:44,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:41:44,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:44,953 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-13 07:41:44,955 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-13 07:41:44,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:41:44,958 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-13 07:41:44,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-13 07:41:44,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:44,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:44,974 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:44,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:44,976 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:44,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:44,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:44,986 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-13 07:41:44,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-13 07:41:44,990 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-13 07:41:44,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-13 07:41:44,993 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-13 07:41:44,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-13 07:41:44,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:45,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:45,006 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:45,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:45,008 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:45,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:45,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:41:45,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:41:45,014 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-13 07:41:45,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:45,018 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-13 07:41:45,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:41:45,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:45,036 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:41:46,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:41:46,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:41:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 27, 27] total 164 [2021-10-13 07:41:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958591501] [2021-10-13 07:41:46,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2021-10-13 07:41:46,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2021-10-13 07:41:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3189, Invalid=26567, Unknown=0, NotChecked=0, Total=29756 [2021-10-13 07:41:46,208 INFO L87 Difference]: Start difference. First operand 519 states and 519 transitions. Second operand has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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) [2021-10-13 07:46:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:46:13,311 INFO L93 Difference]: Finished difference Result 532 states and 533 transitions. [2021-10-13 07:46:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2021-10-13 07:46:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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 518 [2021-10-13 07:46:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:46:13,313 INFO L225 Difference]: With dead ends: 532 [2021-10-13 07:46:13,314 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:46:13,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91733 ImplicationChecksByTransitivity, 270674.9ms TimeCoverageRelationStatistics Valid=60675, Invalid=242375, Unknown=0, NotChecked=0, Total=303050 [2021-10-13 07:46:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:46:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:46:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 07:46:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:46:13,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 518 [2021-10-13 07:46:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:46:13,332 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:46:13,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 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) [2021-10-13 07:46:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:46:13,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:46:13,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:13,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:46:13,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-10-13 07:46:13,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:46:13,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:46:19,236 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-13 07:46:19,236 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:46:19,236 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-13 07:46:19,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-13 07:46:19,238 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-13 07:46:19,238 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:46:19,238 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 07:46:19,238 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-13 07:46:19,238 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-13 07:46:19,239 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (let ((.cse3 (<= ULTIMATE.start_main_~d1old~0 75)) (.cse1 (<= ULTIMATE.start_main_~d1~0 75)) (.cse0 (or (and (= ULTIMATE.start_main_~d1~0 73) (= ULTIMATE.start_main_~d2~0 74) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) (let ((.cse4 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1old~0))) (and (<= 0 .cse4) (<= 75 ULTIMATE.start_main_~d1~0) (<= ULTIMATE.start_main_~d1old~0 2147483646) (<= 73 ULTIMATE.start_main_~d1old~0) (= (+ ULTIMATE.start_main_~d1old~0 1) ULTIMATE.start_main_~d2~0) (<= .cse4 2147483647) (<= ULTIMATE.start_main_~d1~0 2147483647)))))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~d1old~0 73)) (let ((.cse2 (* ULTIMATE.start_main_~x~0 (- 1)))) (and (or (and .cse0 (<= ULTIMATE.start_main_~d1old~0 (div (+ 2147483570 .cse2) 2)) (<= 79 ULTIMATE.start_main_~d1~0)) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1~0) 2147483570) .cse0 (<= 78 ULTIMATE.start_main_~d2~0))) (< ULTIMATE.start_main_~d1old~0 2147483646) (< ULTIMATE.start_main_~d1~0 2147483646) (< ULTIMATE.start_main_~d1old~0 (+ (div (+ .cse2 (- 7)) 4) (div (+ 4294967290 .cse2) 2) 1)))) (and (<= 77 ULTIMATE.start_main_~d1~0) .cse0 .cse3 (<= ULTIMATE.start_main_~d1~0 77) (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d2~0) 2147483500)) (and .cse0 .cse3 (<= ULTIMATE.start_main_~x~0 2147483499) (<= 75 ULTIMATE.start_main_~d1old~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~d1~0 73)))) [2021-10-13 07:46:19,249 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:46:19,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:46:19 BoogieIcfgContainer [2021-10-13 07:46:19,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:46:19,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:46:19,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:46:19,304 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:46:19,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:52" (3/4) ... [2021-10-13 07:46:19,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:46:19,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:46:19,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 07:46:19,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:46:19,340 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) [2021-10-13 07:46:19,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:46:19,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:46:19,350 INFO L168 Benchmark]: Toolchain (without parser) took 327290.26 ms. Allocated memory was 100.7 MB in the beginning and 446.7 MB in the end (delta: 346.0 MB). Free memory was 62.9 MB in the beginning and 325.7 MB in the end (delta: -262.8 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,350 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:19,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.98 ms. Allocated memory is still 100.7 MB. Free memory was 62.6 MB in the beginning and 77.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 76.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:19,351 INFO L168 Benchmark]: Boogie Preprocessor took 16.12 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 75.2 MB in the end (delta: 811.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,352 INFO L168 Benchmark]: RCFGBuilder took 280.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 66.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,352 INFO L168 Benchmark]: TraceAbstraction took 326685.07 ms. Allocated memory was 100.7 MB in the beginning and 446.7 MB in the end (delta: 346.0 MB). Free memory was 66.0 MB in the beginning and 328.8 MB in the end (delta: -262.9 MB). Peak memory consumption was 332.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,352 INFO L168 Benchmark]: Witness Printer took 46.03 ms. Allocated memory is still 446.7 MB. Free memory was 328.8 MB in the beginning and 325.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:19,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 100.7 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.98 ms. Allocated memory is still 100.7 MB. Free memory was 62.6 MB in the beginning and 77.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 76.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.12 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 75.2 MB in the end (delta: 811.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 280.46 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 66.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 326685.07 ms. Allocated memory was 100.7 MB in the beginning and 446.7 MB in the end (delta: 346.0 MB). Free memory was 66.0 MB in the beginning and 328.8 MB in the end (delta: -262.9 MB). Peak memory consumption was 332.9 MB. Max. memory is 16.1 GB. * Witness Printer took 46.03 ms. Allocated memory is still 446.7 MB. Free memory was 328.8 MB in the beginning and 325.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 326576.3ms, OverallIterations: 14, TraceHistogramMax: 74, EmptinessCheckTime: 56.3ms, AutomataDifference: 282635.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5685.0ms, InitialAbstractionConstructionTime: 15.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 8361 SDslu, 307 SDs, 0 SdLazy, 5125 SolverSat, 6054 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5712.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4097 GetRequests, 2885 SyntacticMatches, 18 SemanticMatches, 1194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115930 ImplicationChecksByTransitivity, 291505.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=519occurred in iteration=13, InterpolantAutomatonStates: 710, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 176.4ms AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 76 NumberOfFragments, 352 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1076 FormulaSimplificationTreeSizeReduction, 1177.8ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 23684 FormulaSimplificationTreeSizeReductionInter, 4498.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 129.3ms SsaConstructionTime, 745.6ms SatisfiabilityAnalysisTime, 27749.6ms InterpolantComputationTime, 2173 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3213 ConstructedInterpolants, 0 QuantifiedInterpolants, 10461 SizeOfPredicates, 158 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 37116/74934 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 504, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 45, TOOLS_POST_TIME[ms]: 198, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 45, TOOLS_QUANTIFIERELIM_TIME[ms]: 184, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 30, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 66, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 76, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 146, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 16, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 317, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 317, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 22, DAG_COMPRESSION_PROCESSED_NODES: 91, DAG_COMPRESSION_RETAINED_NODES: 32, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:46:19,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40cd6748-5ee8-4496-9c2b-372e8c870eca/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...