./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:30:40,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:30:40,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:30:40,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:30:40,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:30:40,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:30:40,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:30:40,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:30:40,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:30:40,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:30:40,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:30:40,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:30:40,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:30:40,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:30:40,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:30:40,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:30:40,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:30:40,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:30:40,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:30:40,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:30:40,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:30:40,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:30:40,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:30:40,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:30:40,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:30:40,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:30:40,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:30:40,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:30:40,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:30:40,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:30:40,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:30:40,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:30:40,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:30:40,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:30:40,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:30:40,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:30:40,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:30:40,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:30:40,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:30:40,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:30:40,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:30:40,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 20:30:40,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:30:40,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:30:40,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:30:40,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:30:40,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:30:40,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:30:40,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:30:40,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:30:40,813 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:30:40,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:30:40,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:30:40,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:30:40,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:30:40,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:30:40,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:30:40,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:30:40,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:30:40,815 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:30:40,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:30:40,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:30:40,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:30:40,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:30:40,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:30:40,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:30:40,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:30:40,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:30:40,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:30:40,818 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 20:30:40,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:30:40,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:30:40,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:30:40,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:30:40,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:30:40,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:30:40,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:30:40,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:30:40,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:30:40,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:30:40,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:30:40,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:30:40,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:30:40,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:30:40,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:30:40,822 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_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2021-11-25 20:30:41,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:30:41,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:30:41,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:30:41,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:30:41,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:30:41,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-11-25 20:30:41,207 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/data/652181bb7/ae6147d26c8f477c8456e65f96d6a2d2/FLAG5e9a200df [2021-11-25 20:30:41,596 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:30:41,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-11-25 20:30:41,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/data/652181bb7/ae6147d26c8f477c8456e65f96d6a2d2/FLAG5e9a200df [2021-11-25 20:30:42,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/data/652181bb7/ae6147d26c8f477c8456e65f96d6a2d2 [2021-11-25 20:30:42,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:30:42,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:30:42,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:30:42,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:30:42,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:30:42,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e83aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42, skipping insertion in model container [2021-11-25 20:30:42,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:30:42,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:30:42,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-11-25 20:30:42,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:30:42,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:30:42,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-11-25 20:30:42,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:30:42,314 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:30:42,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42 WrapperNode [2021-11-25 20:30:42,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:30:42,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:30:42,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:30:42,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:30:42,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,351 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-11-25 20:30:42,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:30:42,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:30:42,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:30:42,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:30:42,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:30:42,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:30:42,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:30:42,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:30:42,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (1/1) ... [2021-11-25 20:30:42,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:30:42,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:42,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:30:42,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:30:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:30:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:30:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:30:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:30:42,521 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:30:42,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:30:42,606 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:30:42,628 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:30:42,628 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:30:42,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:30:42 BoogieIcfgContainer [2021-11-25 20:30:42,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:30:42,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:30:42,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:30:42,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:30:42,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:30:42" (1/3) ... [2021-11-25 20:30:42,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a3f1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:30:42, skipping insertion in model container [2021-11-25 20:30:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:30:42" (2/3) ... [2021-11-25 20:30:42,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a3f1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:30:42, skipping insertion in model container [2021-11-25 20:30:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:30:42" (3/3) ... [2021-11-25 20:30:42,639 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-11-25 20:30:42,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:30:42,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 20:30:42,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:30:42,695 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:30:42,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 20:30:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 20:30:42,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:42,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 20:30:42,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-25 20:30:42,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839408792] [2021-11-25 20:30:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:42,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:42,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:42,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839408792] [2021-11-25 20:30:42,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839408792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:42,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:42,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:30:42,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770683619] [2021-11-25 20:30:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:42,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:30:42,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:30:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:42,921 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-25 20:30:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:42,977 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-25 20:30:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:30:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2021-11-25 20:30:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:42,987 INFO L225 Difference]: With dead ends: 20 [2021-11-25 20:30:42,987 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 20:30:42,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:30:42,993 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:42,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:30:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 20:30:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-25 20:30:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-25 20:30:43,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-25 20:30:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:43,024 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-25 20:30:43,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-25 20:30:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-25 20:30:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:30:43,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:43,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:30:43,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:30:43,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-25 20:30:43,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641903571] [2021-11-25 20:30:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:43,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641903571] [2021-11-25 20:30:43,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641903571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:30:43,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052746664] [2021-11-25 20:30:43,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:30:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:30:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:43,070 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:43,125 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-25 20:30:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:30:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 20:30:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:43,127 INFO L225 Difference]: With dead ends: 13 [2021-11-25 20:30:43,127 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 20:30:43,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:30:43,129 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:43,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:30:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 20:30:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 20:30:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-25 20:30:43,134 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-11-25 20:30:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:43,134 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-25 20:30:43,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-25 20:30:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 20:30:43,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:43,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 20:30:43,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:30:43,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-25 20:30:43,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159439535] [2021-11-25 20:30:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159439535] [2021-11-25 20:30:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159439535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:43,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:43,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:30:43,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618655538] [2021-11-25 20:30:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:30:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:30:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:43,196 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:43,219 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-11-25 20:30:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:30:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 20:30:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:43,221 INFO L225 Difference]: With dead ends: 12 [2021-11-25 20:30:43,221 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 20:30:43,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:30:43,224 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:43,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:30:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 20:30:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 20:30:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-25 20:30:43,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-11-25 20:30:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:43,237 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-25 20:30:43,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-25 20:30:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:30:43,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:43,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:30:43,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:30:43,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-25 20:30:43,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:43,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971858484] [2021-11-25 20:30:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:43,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971858484] [2021-11-25 20:30:43,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971858484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:43,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:30:43,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:30:43,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447329607] [2021-11-25 20:30:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:43,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:30:43,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:30:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:30:43,320 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-25 20:30:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:43,353 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 20:30:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:30:43,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-11-25 20:30:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:43,354 INFO L225 Difference]: With dead ends: 15 [2021-11-25 20:30:43,355 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 20:30:43,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:30:43,357 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:43,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:30:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 20:30:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 20:30:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 20:30:43,378 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-25 20:30:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:43,379 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 20:30:43,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-25 20:30:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 20:30:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:30:43,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:43,380 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:30:43,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:30:43,380 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-25 20:30:43,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:43,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115015152] [2021-11-25 20:30:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115015152] [2021-11-25 20:30:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115015152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367112614] [2021-11-25 20:30:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:43,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:43,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:43,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:30:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:43,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:30:43,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:43,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367112614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:30:43,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641416478] [2021-11-25 20:30:43,650 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:30:43,651 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:30:43,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:30:43,660 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:30:43,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:30:44,315 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:30:44,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1641416478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:30:44,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:30:44,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 14 [2021-11-25 20:30:44,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114365258] [2021-11-25 20:30:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:30:44,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:30:44,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:30:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:30:44,800 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:45,367 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-25 20:30:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:30:45,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 9 [2021-11-25 20:30:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:45,368 INFO L225 Difference]: With dead ends: 14 [2021-11-25 20:30:45,368 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 20:30:45,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:30:45,371 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:45,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:30:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 20:30:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-25 20:30:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-25 20:30:45,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2021-11-25 20:30:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:45,375 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-25 20:30:45,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-25 20:30:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:30:45,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:45,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2021-11-25 20:30:45,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:45,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:45,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1317414976, now seen corresponding path program 1 times [2021-11-25 20:30:45,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:45,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30938739] [2021-11-25 20:30:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:45,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:45,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30938739] [2021-11-25 20:30:45,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30938739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661191841] [2021-11-25 20:30:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:45,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:45,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:45,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:30:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:45,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:30:45,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:45,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:45,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661191841] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:30:45,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022973107] [2021-11-25 20:30:45,942 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:30:45,942 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:30:45,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:30:45,942 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:30:45,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:30:46,250 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:30:46,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 20:30:46,825 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:30:46,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:30:46,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-11-25 20:30:46,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979793381] [2021-11-25 20:30:46,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:30:46,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 20:30:46,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:46,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 20:30:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:30:46,830 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:47,112 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-11-25 20:30:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:30:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 20:30:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:47,113 INFO L225 Difference]: With dead ends: 34 [2021-11-25 20:30:47,114 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 20:30:47,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:30:47,116 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:47,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:30:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 20:30:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-25 20:30:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-25 20:30:47,123 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 12 [2021-11-25 20:30:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:47,128 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-25 20:30:47,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-25 20:30:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 20:30:47,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:47,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1] [2021-11-25 20:30:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:47,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:30:47,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:47,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:47,357 INFO L85 PathProgramCache]: Analyzing trace with hash -719108544, now seen corresponding path program 2 times [2021-11-25 20:30:47,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:47,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114902350] [2021-11-25 20:30:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:47,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:47,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:47,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114902350] [2021-11-25 20:30:47,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114902350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:47,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993205195] [2021-11-25 20:30:47,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:30:47,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:47,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:47,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:30:47,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 20:30:47,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:30:47,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 20:30:47,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:48,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:48,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993205195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:30:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [998789441] [2021-11-25 20:30:48,885 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:30:48,885 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:30:48,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:30:48,886 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:30:48,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:30:49,171 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:30:50,123 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '691#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 20:30:50,123 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:30:50,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:30:50,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 47 [2021-11-25 20:30:50,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582647079] [2021-11-25 20:30:50,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:30:50,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 20:30:50,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 20:30:50,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2529, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 20:30:50,128 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:51,934 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-11-25 20:30:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 20:30:51,935 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-25 20:30:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:51,937 INFO L225 Difference]: With dead ends: 94 [2021-11-25 20:30:51,937 INFO L226 Difference]: Without dead ends: 93 [2021-11-25 20:30:51,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1526, Invalid=6846, Unknown=0, NotChecked=0, Total=8372 [2021-11-25 20:30:51,943 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 274 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:51,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 40 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:30:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-25 20:30:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-25 20:30:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2021-11-25 20:30:51,957 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 32 [2021-11-25 20:30:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:51,957 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2021-11-25 20:30:51,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:30:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2021-11-25 20:30:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 20:30:51,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:51,961 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 1, 1, 1] [2021-11-25 20:30:51,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:52,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:52,176 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:30:52,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1754394176, now seen corresponding path program 3 times [2021-11-25 20:30:52,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:52,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139763586] [2021-11-25 20:30:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:52,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:52,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:52,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139763586] [2021-11-25 20:30:52,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139763586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:52,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620942326] [2021-11-25 20:30:52,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:30:52,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:52,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:52,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:52,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:30:52,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:30:52,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:30:52,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-25 20:30:52,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:30:55,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:31:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:31:00,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620942326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:31:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1398713949] [2021-11-25 20:31:00,328 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:31:00,328 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:31:00,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:31:00,328 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:31:00,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:31:00,563 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:31:03,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1686#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 20:31:03,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:31:03,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:31:03,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 55, 55] total 143 [2021-11-25 20:31:03,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423275031] [2021-11-25 20:31:03,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:31:03,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2021-11-25 20:31:03,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:31:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2021-11-25 20:31:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2481, Invalid=19869, Unknown=0, NotChecked=0, Total=22350 [2021-11-25 20:31:03,671 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 144 states, 143 states have (on average 1.8951048951048952) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:31:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:31:20,759 INFO L93 Difference]: Finished difference Result 274 states and 309 transitions. [2021-11-25 20:31:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-25 20:31:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 1.8951048951048952) internal successors, (271), 144 states have internal predecessors, (271), 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 92 [2021-11-25 20:31:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:31:20,767 INFO L225 Difference]: With dead ends: 274 [2021-11-25 20:31:20,767 INFO L226 Difference]: Without dead ends: 273 [2021-11-25 20:31:20,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 144 SyntacticMatches, 19 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16133 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=13532, Invalid=60180, Unknown=0, NotChecked=0, Total=73712 [2021-11-25 20:31:20,779 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1798 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 6092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:31:20,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 114 Invalid, 6092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 20:31:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-25 20:31:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-25 20:31:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.0036764705882353) internal successors, (273), 272 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:31:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2021-11-25 20:31:20,819 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 92 [2021-11-25 20:31:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:31:20,820 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2021-11-25 20:31:20,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 1.8951048951048952) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:31:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2021-11-25 20:31:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 20:31:20,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:31:20,826 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 1, 1, 1] [2021-11-25 20:31:20,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:31:21,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:31:21,040 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:31:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:31:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1045492800, now seen corresponding path program 4 times [2021-11-25 20:31:21,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:31:21,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058640299] [2021-11-25 20:31:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:21,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:31:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:31:24,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:31:24,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058640299] [2021-11-25 20:31:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058640299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:31:24,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119971087] [2021-11-25 20:31:24,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:31:24,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:31:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:31:24,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:31:24,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:31:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:31:24,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 217 conjunts are in the unsatisfiable core [2021-11-25 20:31:24,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:31:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:31:42,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:32:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:32:20,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119971087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:32:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309648795] [2021-11-25 20:32:20,045 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:32:20,045 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:32:20,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:32:20,045 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:32:20,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:32:20,227 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:32:38,485 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4649#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|) 0))' at error location [2021-11-25 20:32:38,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:32:38,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:32:38,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 163, 163] total 431 [2021-11-25 20:32:38,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822351560] [2021-11-25 20:32:38,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:32:38,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 432 states [2021-11-25 20:32:38,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 432 interpolants. [2021-11-25 20:32:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21021, Invalid=170385, Unknown=0, NotChecked=0, Total=191406 [2021-11-25 20:32:38,505 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand has 432 states, 431 states have (on average 1.8816705336426913) internal successors, (811), 432 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:41,111 INFO L93 Difference]: Finished difference Result 814 states and 921 transitions. [2021-11-25 20:36:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 431 states. [2021-11-25 20:36:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 432 states, 431 states have (on average 1.8816705336426913) internal successors, (811), 432 states have internal predecessors, (811), 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 272 [2021-11-25 20:36:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:41,119 INFO L225 Difference]: With dead ends: 814 [2021-11-25 20:36:41,119 INFO L226 Difference]: Without dead ends: 813 [2021-11-25 20:36:41,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1297 GetRequests, 432 SyntacticMatches, 55 SemanticMatches, 810 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148487 ImplicationChecksByTransitivity, 294.0s TimeCoverageRelationStatistics Valid=121262, Invalid=537270, Unknown=0, NotChecked=0, Total=658532 [2021-11-25 20:36:41,153 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14001 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 44767 mSolverCounterSat, 8128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14001 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 52895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8128 IncrementalHoareTripleChecker+Valid, 44767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:41,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14001 Valid, 334 Invalid, 52895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8128 Valid, 44767 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2021-11-25 20:36:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-25 20:36:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2021-11-25 20:36:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.001231527093596) internal successors, (813), 812 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 813 transitions. [2021-11-25 20:36:41,241 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 813 transitions. Word has length 272 [2021-11-25 20:36:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:41,242 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 813 transitions. [2021-11-25 20:36:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 432 states, 431 states have (on average 1.8816705336426913) internal successors, (811), 432 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:36:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 813 transitions. [2021-11-25 20:36:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2021-11-25 20:36:41,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:41,273 INFO L514 BasicCegarLoop]: trace histogram [162, 162, 162, 162, 161, 1, 1, 1] [2021-11-25 20:36:41,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:36:41,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:36:41,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:36:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:41,498 INFO L85 PathProgramCache]: Analyzing trace with hash 332405696, now seen corresponding path program 5 times [2021-11-25 20:36:41,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:41,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079032869] [2021-11-25 20:36:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:41,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 65205 backedges. 0 proven. 65205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:37:09,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:09,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079032869] [2021-11-25 20:37:09,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079032869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:37:09,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726558078] [2021-11-25 20:37:09,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:37:09,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:37:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:37:09,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:37:09,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe439b46-f972-4346-aa70-06b314f590b7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:37:10,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 162 check-sat command(s) [2021-11-25 20:37:10,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:37:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 649 conjunts are in the unsatisfiable core [2021-11-25 20:37:10,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 65205 backedges. 0 proven. 65205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:39:40,894 INFO L328 TraceCheckSpWp]: Computing backward predicates...