./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh --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 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:38:18,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:38:18,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:38:18,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:38:18,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:38:18,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:38:18,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:38:18,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:38:18,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:38:18,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:38:18,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:38:18,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:38:18,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:38:18,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:38:18,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:38:18,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:38:18,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:38:18,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:38:18,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:38:18,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:38:18,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:38:18,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:38:18,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:38:18,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:38:18,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:38:18,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:38:18,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:38:18,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:38:18,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:38:18,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:38:18,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:38:18,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:38:18,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:38:18,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:38:18,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:38:18,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:38:18,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:38:18,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:38:18,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:38:18,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:38:18,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:38:18,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:38:18,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:38:18,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:38:18,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:38:18,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:38:18,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:38:18,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:38:18,751 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:38:18,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:38:18,751 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:38:18,751 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:38:18,752 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:38:18,752 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:38:18,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:38:18,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:38:18,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:38:18,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:38:18,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:38:18,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:38:18,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:38:18,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:38:18,755 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:38:18,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:38:18,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:38:18,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:38:18,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150a66a836464f467fb90ec51b7c24919c6718d6acc15c3a2ae1cbeb65f65711 [2022-12-14 11:38:18,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:38:18,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:38:18,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:38:18,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:38:18,953 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:38:18,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i [2022-12-14 11:38:21,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:38:21,631 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:38:21,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i [2022-12-14 11:38:21,636 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/data/5df8df488/f76a0aa524a44844a58c2e1156eeea80/FLAGdedbbb2f6 [2022-12-14 11:38:22,051 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/data/5df8df488/f76a0aa524a44844a58c2e1156eeea80 [2022-12-14 11:38:22,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:38:22,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:38:22,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:38:22,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:38:22,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:38:22,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10875803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22, skipping insertion in model container [2022-12-14 11:38:22,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:38:22,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:38:22,167 WARN L237 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_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i[873,886] [2022-12-14 11:38:22,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:38:22,179 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:38:22,188 WARN L237 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_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/sv-benchmarks/c/loop-zilu/benchmark16_conjunctive.i[873,886] [2022-12-14 11:38:22,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:38:22,199 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:38:22,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22 WrapperNode [2022-12-14 11:38:22,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:38:22,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:38:22,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:38:22,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:38:22,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,221 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-12-14 11:38:22,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:38:22,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:38:22,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:38:22,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:38:22,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,233 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:38:22,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:38:22,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:38:22,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:38:22,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (1/1) ... [2022-12-14 11:38:22,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:38:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:22,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:38:22,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:38:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:38:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:38:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:38:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:38:22,332 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:38:22,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:38:22,415 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:38:22,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:38:22,431 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:38:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:22 BoogieIcfgContainer [2022-12-14 11:38:22,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:38:22,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:38:22,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:38:22,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:38:22,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:38:22" (1/3) ... [2022-12-14 11:38:22,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbaa2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:38:22, skipping insertion in model container [2022-12-14 11:38:22,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:22" (2/3) ... [2022-12-14 11:38:22,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbaa2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:38:22, skipping insertion in model container [2022-12-14 11:38:22,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:22" (3/3) ... [2022-12-14 11:38:22,438 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark16_conjunctive.i [2022-12-14 11:38:22,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:38:22,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 11:38:22,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:38:22,489 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e6a719a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:38:22,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 11:38:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 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) [2022-12-14 11:38:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:38:22,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:22,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:38:22,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2509684, now seen corresponding path program 1 times [2022-12-14 11:38:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:22,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562149621] [2022-12-14 11:38:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:22,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562149621] [2022-12-14 11:38:22,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562149621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:22,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:22,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:38:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290359759] [2022-12-14 11:38:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,653 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-12-14 11:38:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:22,695 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-12-14 11:38:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-12-14 11:38:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:22,704 INFO L225 Difference]: With dead ends: 23 [2022-12-14 11:38:22,705 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 11:38:22,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,709 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:22,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 11:38:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 11:38:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-12-14 11:38:22,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 4 [2022-12-14 11:38:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:22,732 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-12-14 11:38:22,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-12-14 11:38:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-12-14 11:38:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:38:22,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:22,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:38:22,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:38:22,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2510904, now seen corresponding path program 1 times [2022-12-14 11:38:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:22,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509389211] [2022-12-14 11:38:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:22,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:22,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509389211] [2022-12-14 11:38:22,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509389211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:22,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:22,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:38:22,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221326573] [2022-12-14 11:38:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,771 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:22,817 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-12-14 11:38:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 11:38:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:22,818 INFO L225 Difference]: With dead ends: 34 [2022-12-14 11:38:22,818 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 11:38:22,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,820 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:22,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 11:38:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-12-14 11:38:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-12-14 11:38:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-12-14 11:38:22,824 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 4 [2022-12-14 11:38:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:22,824 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-12-14 11:38:22,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-12-14 11:38:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:38:22,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:22,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:38:22,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:38:22,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 77800254, now seen corresponding path program 1 times [2022-12-14 11:38:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102255633] [2022-12-14 11:38:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:22,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:22,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102255633] [2022-12-14 11:38:22,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102255633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:22,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:22,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:38:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790076476] [2022-12-14 11:38:22,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,855 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:22,888 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-12-14 11:38:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:22,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:38:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:22,889 INFO L225 Difference]: With dead ends: 30 [2022-12-14 11:38:22,889 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 11:38:22,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,891 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:22,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 11:38:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-12-14 11:38:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-14 11:38:22,895 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2022-12-14 11:38:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:22,900 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-14 11:38:22,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-14 11:38:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:38:22,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:22,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:38:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:38:22,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 77838085, now seen corresponding path program 1 times [2022-12-14 11:38:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083757316] [2022-12-14 11:38:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:22,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083757316] [2022-12-14 11:38:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083757316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:38:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275762527] [2022-12-14 11:38:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,934 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:22,967 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-12-14 11:38:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:38:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:22,969 INFO L225 Difference]: With dead ends: 29 [2022-12-14 11:38:22,969 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 11:38:22,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:22,971 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:22,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 11:38:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 11:38:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-12-14 11:38:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-12-14 11:38:22,976 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 5 [2022-12-14 11:38:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:22,976 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-12-14 11:38:22,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-12-14 11:38:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:38:22,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:22,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 11:38:22,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:38:22,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1883159370, now seen corresponding path program 1 times [2022-12-14 11:38:22,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:22,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457519862] [2022-12-14 11:38:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:23,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457519862] [2022-12-14 11:38:23,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457519862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:23,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:23,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:38:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614253520] [2022-12-14 11:38:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:23,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:23,006 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:23,029 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-12-14 11:38:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 11:38:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:23,030 INFO L225 Difference]: With dead ends: 25 [2022-12-14 11:38:23,030 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 11:38:23,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:23,031 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 11:38:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-14 11:38:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-12-14 11:38:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-12-14 11:38:23,035 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 6 [2022-12-14 11:38:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:23,035 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-12-14 11:38:23,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-12-14 11:38:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:38:23,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:23,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:38:23,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:38:23,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1751601728, now seen corresponding path program 1 times [2022-12-14 11:38:23,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693536977] [2022-12-14 11:38:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:23,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:23,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693536977] [2022-12-14 11:38:23,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693536977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:23,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:23,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:38:23,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016698775] [2022-12-14 11:38:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:38:23,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:38:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:23,063 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 11:38:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:23,080 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-12-14 11:38:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:38:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-12-14 11:38:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:23,081 INFO L225 Difference]: With dead ends: 23 [2022-12-14 11:38:23,081 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 11:38:23,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:38:23,082 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:23,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 11:38:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 11:38:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-12-14 11:38:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-12-14 11:38:23,086 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 7 [2022-12-14 11:38:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:23,086 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-12-14 11:38:23,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 11:38:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-12-14 11:38:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:38:23,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:23,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:38:23,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:38:23,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash -337916730, now seen corresponding path program 1 times [2022-12-14 11:38:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:23,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74056684] [2022-12-14 11:38:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:38:23,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74056684] [2022-12-14 11:38:23,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74056684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:23,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:23,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:38:23,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644310033] [2022-12-14 11:38:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:23,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:38:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:23,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:38:23,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:38:23,137 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:23,160 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 11:38:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:38:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 11:38:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:23,161 INFO L225 Difference]: With dead ends: 22 [2022-12-14 11:38:23,161 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 11:38:23,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:38:23,162 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:23,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 11:38:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 11:38:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-12-14 11:38:23,166 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2022-12-14 11:38:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:23,166 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-12-14 11:38:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-12-14 11:38:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:38:23,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:23,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 11:38:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:38:23,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1885521808, now seen corresponding path program 1 times [2022-12-14 11:38:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:23,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488096386] [2022-12-14 11:38:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:23,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488096386] [2022-12-14 11:38:23,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488096386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122932065] [2022-12-14 11:38:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:23,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:23,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:23,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:23,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:38:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:23,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:38:23,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:23,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:23,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122932065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:23,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945579161] [2022-12-14 11:38:23,308 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:23,308 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:23,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:23,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:23,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:23,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:23,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '477#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:23,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:23,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:23,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 11:38:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609602892] [2022-12-14 11:38:23,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:23,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:38:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:38:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:38:23,704 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:23,747 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-12-14 11:38:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:38:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 11:38:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:23,748 INFO L225 Difference]: With dead ends: 58 [2022-12-14 11:38:23,748 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 11:38:23,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:38:23,749 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:23,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 11:38:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2022-12-14 11:38:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 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) [2022-12-14 11:38:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-12-14 11:38:23,753 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 10 [2022-12-14 11:38:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:23,753 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-12-14 11:38:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-12-14 11:38:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:38:23,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:23,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:38:23,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:38:23,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:23,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1885483977, now seen corresponding path program 1 times [2022-12-14 11:38:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:23,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848765029] [2022-12-14 11:38:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:38:24,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:24,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848765029] [2022-12-14 11:38:24,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848765029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:38:24,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:38:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:38:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688259807] [2022-12-14 11:38:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:38:24,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:38:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:38:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:38:24,045 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:24,072 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-12-14 11:38:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:38:24,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 11:38:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:24,073 INFO L225 Difference]: With dead ends: 34 [2022-12-14 11:38:24,073 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 11:38:24,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:38:24,074 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:24,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 11:38:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 11:38:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-12-14 11:38:24,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2022-12-14 11:38:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:24,078 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-12-14 11:38:24,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-12-14 11:38:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:38:24,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:24,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 11:38:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 11:38:24,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1678366148, now seen corresponding path program 1 times [2022-12-14 11:38:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:24,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101606364] [2022-12-14 11:38:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:24,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101606364] [2022-12-14 11:38:24,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101606364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:24,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234132527] [2022-12-14 11:38:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:24,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:24,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:24,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:24,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:38:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:24,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:38:24,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234132527] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:24,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743226014] [2022-12-14 11:38:24,169 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:24,169 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:24,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:24,169 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:24,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:24,272 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:24,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '726#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:24,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:24,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:24,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 11:38:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629102345] [2022-12-14 11:38:24,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:38:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:38:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:38:24,434 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:24,449 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-12-14 11:38:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:38:24,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 11:38:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:24,450 INFO L225 Difference]: With dead ends: 29 [2022-12-14 11:38:24,450 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 11:38:24,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:38:24,451 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:24,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 11:38:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 11:38:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-12-14 11:38:24,455 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 11 [2022-12-14 11:38:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:24,455 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-12-14 11:38:24,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-12-14 11:38:24,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 11:38:24,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:24,456 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 11:38:24,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:38:24,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:38:24,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1430254014, now seen corresponding path program 2 times [2022-12-14 11:38:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:24,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672325434] [2022-12-14 11:38:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:24,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672325434] [2022-12-14 11:38:24,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672325434] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539150426] [2022-12-14 11:38:24,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:38:24,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:24,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:24,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:38:24,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 11:38:24,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:24,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:38:24,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:24,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539150426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:24,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557044778] [2022-12-14 11:38:24,855 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:24,855 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:24,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:24,855 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:24,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:24,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:25,087 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '955#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:25,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:25,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:25,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 11:38:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331179259] [2022-12-14 11:38:25,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:25,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:38:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:38:25,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:38:25,089 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:25,119 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-12-14 11:38:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 11:38:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 11:38:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:25,120 INFO L225 Difference]: With dead ends: 63 [2022-12-14 11:38:25,120 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 11:38:25,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:38:25,121 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:25,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 44 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 11:38:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2022-12-14 11:38:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 56 states have internal predecessors, (62), 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) [2022-12-14 11:38:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-12-14 11:38:25,128 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 25 [2022-12-14 11:38:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:25,129 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-12-14 11:38:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-12-14 11:38:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:38:25,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:25,129 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2022-12-14 11:38:25,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:38:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 11:38:25,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1388201526, now seen corresponding path program 2 times [2022-12-14 11:38:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654021246] [2022-12-14 11:38:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:25,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654021246] [2022-12-14 11:38:25,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654021246] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903928847] [2022-12-14 11:38:25,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:38:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:25,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:38:25,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 11:38:25,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:25,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:38:25,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:25,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:25,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903928847] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1065742398] [2022-12-14 11:38:25,636 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:25,636 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:25,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:25,636 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:25,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:25,741 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:25,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1265#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:25,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:25,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:25,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 11:38:25,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877268393] [2022-12-14 11:38:25,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:25,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:38:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:25,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:38:25,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:38:25,902 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 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) [2022-12-14 11:38:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:25,933 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-12-14 11:38:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 11:38:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 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 26 [2022-12-14 11:38:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:25,934 INFO L225 Difference]: With dead ends: 59 [2022-12-14 11:38:25,935 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 11:38:25,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:38:25,936 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:25,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 38 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 11:38:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 11:38:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-12-14 11:38:25,940 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 26 [2022-12-14 11:38:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:25,940 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-12-14 11:38:25,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 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) [2022-12-14 11:38:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-12-14 11:38:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 11:38:25,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:25,941 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-12-14 11:38:25,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:38:26,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:26,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash -789860482, now seen corresponding path program 3 times [2022-12-14 11:38:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:26,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102021821] [2022-12-14 11:38:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:26,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102021821] [2022-12-14 11:38:26,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102021821] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484173323] [2022-12-14 11:38:26,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:38:26,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:26,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:26,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:38:26,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:38:26,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:26,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:38:26,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:26,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:26,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484173323] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:26,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1441256246] [2022-12-14 11:38:26,565 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:26,565 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:26,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:26,565 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:26,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:26,649 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:26,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1758#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:26,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:26,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:26,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-12-14 11:38:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365626148] [2022-12-14 11:38:26,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:38:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:38:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:38:26,796 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 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) [2022-12-14 11:38:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:26,856 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-12-14 11:38:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 11:38:26,857 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 11:38:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:26,858 INFO L225 Difference]: With dead ends: 129 [2022-12-14 11:38:26,858 INFO L226 Difference]: Without dead ends: 128 [2022-12-14 11:38:26,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:38:26,860 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:26,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 85 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-14 11:38:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 117. [2022-12-14 11:38:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 116 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2022-12-14 11:38:26,867 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 55 [2022-12-14 11:38:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:26,868 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2022-12-14 11:38:26,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 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) [2022-12-14 11:38:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2022-12-14 11:38:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 11:38:26,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:26,868 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2022-12-14 11:38:26,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:38:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 11:38:27,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1284128886, now seen corresponding path program 3 times [2022-12-14 11:38:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:27,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307452398] [2022-12-14 11:38:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:27,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307452398] [2022-12-14 11:38:27,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307452398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518745471] [2022-12-14 11:38:27,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:38:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:27,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:27,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:38:27,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:38:27,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:27,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:38:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:27,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:27,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518745471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:27,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438607079] [2022-12-14 11:38:27,569 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:27,570 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:27,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:27,570 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:27,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:27,648 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:27,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2410#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:27,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:27,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:27,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-12-14 11:38:27,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371399573] [2022-12-14 11:38:27,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:27,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:38:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:38:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=574, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:38:27,787 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 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) [2022-12-14 11:38:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:27,836 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2022-12-14 11:38:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 11:38:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 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 56 [2022-12-14 11:38:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:27,837 INFO L225 Difference]: With dead ends: 119 [2022-12-14 11:38:27,837 INFO L226 Difference]: Without dead ends: 118 [2022-12-14 11:38:27,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=296, Invalid=574, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:38:27,838 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:27,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 77 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:38:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-14 11:38:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-12-14 11:38:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 117 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2022-12-14 11:38:27,852 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 56 [2022-12-14 11:38:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:27,852 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2022-12-14 11:38:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 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) [2022-12-14 11:38:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2022-12-14 11:38:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 11:38:27,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:27,855 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-12-14 11:38:27,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:38:28,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 11:38:28,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 984054526, now seen corresponding path program 4 times [2022-12-14 11:38:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:28,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317895473] [2022-12-14 11:38:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:28,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317895473] [2022-12-14 11:38:28,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317895473] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345918634] [2022-12-14 11:38:28,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:38:28,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:28,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:28,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:38:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:28,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 11:38:28,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:28,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:29,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345918634] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:29,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343970866] [2022-12-14 11:38:29,357 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:29,357 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:29,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:29,357 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:29,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:29,430 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:29,643 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3431#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:29,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:29,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:29,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-12-14 11:38:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552053347] [2022-12-14 11:38:29,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 11:38:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 11:38:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=1716, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:38:29,648 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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) [2022-12-14 11:38:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:29,784 INFO L93 Difference]: Finished difference Result 261 states and 284 transitions. [2022-12-14 11:38:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 11:38:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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 115 [2022-12-14 11:38:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:29,787 INFO L225 Difference]: With dead ends: 261 [2022-12-14 11:38:29,787 INFO L226 Difference]: Without dead ends: 260 [2022-12-14 11:38:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1146, Invalid=1716, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:38:29,789 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:29,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 170 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:38:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-14 11:38:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 237. [2022-12-14 11:38:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.1063829787234043) internal successors, (260), 236 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:38:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2022-12-14 11:38:29,798 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 115 [2022-12-14 11:38:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:29,798 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2022-12-14 11:38:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 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) [2022-12-14 11:38:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2022-12-14 11:38:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 11:38:29,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:29,799 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2022-12-14 11:38:29,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:38:29,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:30,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash 440919286, now seen corresponding path program 4 times [2022-12-14 11:38:30,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:30,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708560203] [2022-12-14 11:38:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:30,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708560203] [2022-12-14 11:38:30,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708560203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848847060] [2022-12-14 11:38:30,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:38:30,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:30,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:30,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:30,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:38:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:30,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 11:38:30,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:30,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:31,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848847060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542523885] [2022-12-14 11:38:31,147 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:31,147 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:31,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:31,147 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:31,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:31,220 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:31,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4767#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:31,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:31,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:31,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-12-14 11:38:31,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940533734] [2022-12-14 11:38:31,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:31,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 11:38:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:31,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 11:38:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1148, Invalid=1714, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:38:31,469 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 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) [2022-12-14 11:38:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:31,589 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2022-12-14 11:38:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 11:38:31,590 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 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 116 [2022-12-14 11:38:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:31,590 INFO L225 Difference]: With dead ends: 239 [2022-12-14 11:38:31,590 INFO L226 Difference]: Without dead ends: 238 [2022-12-14 11:38:31,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1148, Invalid=1714, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:38:31,592 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:31,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 149 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:38:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-14 11:38:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-12-14 11:38:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 237 states have internal predecessors, (238), 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) [2022-12-14 11:38:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2022-12-14 11:38:31,598 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 116 [2022-12-14 11:38:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:31,599 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2022-12-14 11:38:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 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) [2022-12-14 11:38:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2022-12-14 11:38:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-14 11:38:31,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:31,601 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1] [2022-12-14 11:38:31,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:38:31,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:38:31,803 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1824543230, now seen corresponding path program 5 times [2022-12-14 11:38:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:31,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667693422] [2022-12-14 11:38:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:33,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667693422] [2022-12-14 11:38:33,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667693422] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021624690] [2022-12-14 11:38:33,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:38:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:33,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:33,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:38:33,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 11:38:33,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:33,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 11:38:33,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:33,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:35,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021624690] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:35,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1639334091] [2022-12-14 11:38:35,123 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:35,123 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:35,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:35,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:35,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:35,185 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:35,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6844#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:35,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:35,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:35,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-12-14 11:38:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027476843] [2022-12-14 11:38:35,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 11:38:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 11:38:35,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4578, Invalid=5724, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 11:38:35,414 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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) [2022-12-14 11:38:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:35,703 INFO L93 Difference]: Finished difference Result 525 states and 572 transitions. [2022-12-14 11:38:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 11:38:35,704 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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 235 [2022-12-14 11:38:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:35,707 INFO L225 Difference]: With dead ends: 525 [2022-12-14 11:38:35,707 INFO L226 Difference]: Without dead ends: 524 [2022-12-14 11:38:35,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4578, Invalid=5724, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 11:38:35,709 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 155 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:35,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 337 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:38:35,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-12-14 11:38:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 477. [2022-12-14 11:38:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1031578947368421) internal successors, (524), 476 states have internal predecessors, (524), 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) [2022-12-14 11:38:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 524 transitions. [2022-12-14 11:38:35,721 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 524 transitions. Word has length 235 [2022-12-14 11:38:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 524 transitions. [2022-12-14 11:38:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 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) [2022-12-14 11:38:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 524 transitions. [2022-12-14 11:38:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-14 11:38:35,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:35,723 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2022-12-14 11:38:35,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:38:35,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:38:35,925 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 726265334, now seen corresponding path program 5 times [2022-12-14 11:38:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849199567] [2022-12-14 11:38:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:37,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:37,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849199567] [2022-12-14 11:38:37,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849199567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091528592] [2022-12-14 11:38:37,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:38:37,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:37,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:37,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:37,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:38:37,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 11:38:37,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 11:38:37,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:37,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:39,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091528592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:39,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933868502] [2022-12-14 11:38:39,769 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:39,769 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:39,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:39,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:39,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:39,844 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:40,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9548#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:40,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:40,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:40,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-12-14 11:38:40,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278331404] [2022-12-14 11:38:40,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:40,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 11:38:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 11:38:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4580, Invalid=5722, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 11:38:40,186 INFO L87 Difference]: Start difference. First operand 477 states and 524 transitions. Second operand has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 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) [2022-12-14 11:38:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:40,542 INFO L93 Difference]: Finished difference Result 479 states and 526 transitions. [2022-12-14 11:38:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 11:38:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 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 236 [2022-12-14 11:38:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:40,544 INFO L225 Difference]: With dead ends: 479 [2022-12-14 11:38:40,544 INFO L226 Difference]: Without dead ends: 478 [2022-12-14 11:38:40,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4580, Invalid=5722, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 11:38:40,546 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:40,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 292 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:38:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-12-14 11:38:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-12-14 11:38:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 476 states have (on average 1.004201680672269) internal successors, (478), 477 states have internal predecessors, (478), 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) [2022-12-14 11:38:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2022-12-14 11:38:40,558 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 236 [2022-12-14 11:38:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:40,558 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2022-12-14 11:38:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 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) [2022-12-14 11:38:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2022-12-14 11:38:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-12-14 11:38:40,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:40,563 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1] [2022-12-14 11:38:40,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:38:40,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 11:38:40,765 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1811349502, now seen corresponding path program 6 times [2022-12-14 11:38:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:40,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229725663] [2022-12-14 11:38:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:45,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229725663] [2022-12-14 11:38:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229725663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157558140] [2022-12-14 11:38:45,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:38:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:45,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:45,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:45,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:38:45,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:38:45,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 11:38:45,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:45,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:38:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:52,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157558140] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:38:52,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109623780] [2022-12-14 11:38:52,218 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:38:52,218 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:38:52,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:38:52,218 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:38:52,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:38:52,298 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:38:52,638 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13737#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:38:52,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:38:52,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:38:52,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-12-14 11:38:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848638499] [2022-12-14 11:38:52,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:38:52,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 11:38:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:38:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 11:38:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18354, Invalid=20652, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 11:38:52,651 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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) [2022-12-14 11:38:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:38:54,112 INFO L93 Difference]: Finished difference Result 1053 states and 1148 transitions. [2022-12-14 11:38:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 11:38:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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 475 [2022-12-14 11:38:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:38:54,119 INFO L225 Difference]: With dead ends: 1053 [2022-12-14 11:38:54,119 INFO L226 Difference]: Without dead ends: 1052 [2022-12-14 11:38:54,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=18354, Invalid=20652, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 11:38:54,122 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 374 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:38:54,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 678 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:38:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-12-14 11:38:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 957. [2022-12-14 11:38:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 955 states have (on average 1.1015706806282723) internal successors, (1052), 956 states have internal predecessors, (1052), 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) [2022-12-14 11:38:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1052 transitions. [2022-12-14 11:38:54,143 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1052 transitions. Word has length 475 [2022-12-14 11:38:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:38:54,143 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1052 transitions. [2022-12-14 11:38:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 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) [2022-12-14 11:38:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1052 transitions. [2022-12-14 11:38:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-14 11:38:54,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:38:54,146 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2022-12-14 11:38:54,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 11:38:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:54,347 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:38:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:38:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash 317259766, now seen corresponding path program 6 times [2022-12-14 11:38:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:38:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560383642] [2022-12-14 11:38:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:38:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:38:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:38:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:59,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:38:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560383642] [2022-12-14 11:38:59,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560383642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:38:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934804592] [2022-12-14 11:38:59,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:38:59,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:38:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:38:59,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:38:59,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 11:38:59,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:38:59,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:38:59,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 11:38:59,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:38:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:38:59,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:39:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:39:06,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934804592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:39:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054534987] [2022-12-14 11:39:06,661 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:39:06,661 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:39:06,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:39:06,662 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:39:06,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:39:06,732 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:39:07,140 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19177#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:39:07,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:39:07,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:39:07,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-12-14 11:39:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260817660] [2022-12-14 11:39:07,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:39:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 11:39:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:39:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 11:39:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18356, Invalid=20650, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 11:39:07,146 INFO L87 Difference]: Start difference. First operand 957 states and 1052 transitions. Second operand has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 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) [2022-12-14 11:39:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:39:08,479 INFO L93 Difference]: Finished difference Result 959 states and 1054 transitions. [2022-12-14 11:39:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 11:39:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 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 476 [2022-12-14 11:39:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:39:08,482 INFO L225 Difference]: With dead ends: 959 [2022-12-14 11:39:08,482 INFO L226 Difference]: Without dead ends: 958 [2022-12-14 11:39:08,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1326 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=18356, Invalid=20650, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 11:39:08,484 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:39:08,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 581 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:39:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-12-14 11:39:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2022-12-14 11:39:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 956 states have (on average 1.002092050209205) internal successors, (958), 957 states have internal predecessors, (958), 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) [2022-12-14 11:39:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 958 transitions. [2022-12-14 11:39:08,509 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 958 transitions. Word has length 476 [2022-12-14 11:39:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:39:08,510 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 958 transitions. [2022-12-14 11:39:08,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 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) [2022-12-14 11:39:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 958 transitions. [2022-12-14 11:39:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-12-14 11:39:08,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:39:08,517 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1] [2022-12-14 11:39:08,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 11:39:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-14 11:39:08,718 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:39:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:39:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1517837310, now seen corresponding path program 7 times [2022-12-14 11:39:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:39:08,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035820538] [2022-12-14 11:39:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:39:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:39:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:39:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:39:33,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:39:33,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035820538] [2022-12-14 11:39:33,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035820538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:39:33,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962326208] [2022-12-14 11:39:33,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:39:33,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:39:33,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:39:33,302 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:39:33,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 11:39:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:39:33,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 11:39:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:39:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:39:34,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962326208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:40:01,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1908575581] [2022-12-14 11:40:01,995 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:40:01,995 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:01,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:01,996 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:01,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:40:02,065 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:40:02,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27590#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:40:02,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:40:02,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:40:02,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-12-14 11:40:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069556040] [2022-12-14 11:40:02,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:40:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 11:40:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 11:40:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73554, Invalid=78156, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 11:40:02,758 INFO L87 Difference]: Start difference. First operand 958 states and 958 transitions. Second operand has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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) [2022-12-14 11:40:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:12,994 INFO L93 Difference]: Finished difference Result 2109 states and 2300 transitions. [2022-12-14 11:40:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 11:40:12,995 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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 955 [2022-12-14 11:40:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:12,999 INFO L225 Difference]: With dead ends: 2109 [2022-12-14 11:40:12,999 INFO L226 Difference]: Without dead ends: 2108 [2022-12-14 11:40:13,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3055 GetRequests, 2667 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3429 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=73554, Invalid=78156, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 11:40:13,008 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 861 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:13,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1348 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 11:40:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-12-14 11:40:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1917. [2022-12-14 11:40:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.1007832898172323) internal successors, (2108), 1916 states have internal predecessors, (2108), 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) [2022-12-14 11:40:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2108 transitions. [2022-12-14 11:40:13,055 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2108 transitions. Word has length 955 [2022-12-14 11:40:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:13,056 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 2108 transitions. [2022-12-14 11:40:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 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) [2022-12-14 11:40:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2108 transitions. [2022-12-14 11:40:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-12-14 11:40:13,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:13,063 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2022-12-14 11:40:13,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 11:40:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 11:40:13,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:40:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -191683594, now seen corresponding path program 7 times [2022-12-14 11:40:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:13,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971474813] [2022-12-14 11:40:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:37,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:37,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971474813] [2022-12-14 11:40:37,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971474813] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:37,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068631574] [2022-12-14 11:40:37,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:40:37,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:37,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:37,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:37,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 11:40:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 11:40:38,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:38,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:06,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068631574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:06,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [733871206] [2022-12-14 11:41:06,101 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:41:06,101 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:41:06,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:41:06,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:41:06,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:41:06,180 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:41:06,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38502#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~k~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:41:06,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:41:06,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:41:06,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-12-14 11:41:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880532924] [2022-12-14 11:41:06,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:06,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 11:41:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:41:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 11:41:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73556, Invalid=78154, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 11:41:06,962 INFO L87 Difference]: Start difference. First operand 1917 states and 2108 transitions. Second operand has 384 states, 383 states have (on average 4.989556135770235) internal successors, (1911), 384 states have internal predecessors, (1911), 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) [2022-12-14 11:41:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:14,302 INFO L93 Difference]: Finished difference Result 1919 states and 2110 transitions. [2022-12-14 11:41:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 11:41:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.989556135770235) internal successors, (1911), 384 states have internal predecessors, (1911), 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 956 [2022-12-14 11:41:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:14,306 INFO L225 Difference]: With dead ends: 1919 [2022-12-14 11:41:14,306 INFO L226 Difference]: Without dead ends: 1918 [2022-12-14 11:41:14,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3058 GetRequests, 2670 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3429 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=73556, Invalid=78154, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 11:41:14,312 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:14,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1159 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 11:41:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-12-14 11:41:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1918. [2022-12-14 11:41:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1916 states have (on average 1.001043841336117) internal successors, (1918), 1917 states have internal predecessors, (1918), 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) [2022-12-14 11:41:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 1918 transitions. [2022-12-14 11:41:14,352 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 1918 transitions. Word has length 956 [2022-12-14 11:41:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:14,353 INFO L495 AbstractCegarLoop]: Abstraction has 1918 states and 1918 transitions. [2022-12-14 11:41:14,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.989556135770235) internal successors, (1911), 384 states have internal predecessors, (1911), 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) [2022-12-14 11:41:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 1918 transitions. [2022-12-14 11:41:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1916 [2022-12-14 11:41:14,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:14,376 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 1, 1, 1] [2022-12-14 11:41:14,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 11:41:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:14,577 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:41:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash 399184894, now seen corresponding path program 8 times [2022-12-14 11:41:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:41:14,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836855114] [2022-12-14 11:41:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:41:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:43:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:43:36,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:43:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836855114] [2022-12-14 11:43:36,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836855114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:43:36,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814690798] [2022-12-14 11:43:36,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:43:36,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:43:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:43:36,477 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:43:36,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 11:44:06,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 11:44:06,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:44:06,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 11:44:06,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:44:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:44:07,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:46:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 365001 backedges. 0 proven. 365001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:46:01,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814690798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:46:01,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551411691] [2022-12-14 11:46:01,869 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:46:01,869 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:46:01,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:46:01,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:46:01,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:46:01,944 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:46:02,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55363#(and (<= |ULTIMATE.start_main_~k~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:46:02,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:46:02,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:46:02,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2022-12-14 11:46:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73606492] [2022-12-14 11:46:02,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:46:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 11:46:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:46:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 11:46:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294546, Invalid=303756, Unknown=0, NotChecked=0, Total=598302 [2022-12-14 11:46:03,021 INFO L87 Difference]: Start difference. First operand 1918 states and 1918 transitions. Second operand has 768 states, 767 states have (on average 4.9921773142112125) internal successors, (3829), 768 states have internal predecessors, (3829), 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) [2022-12-14 11:47:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:47:47,967 INFO L93 Difference]: Finished difference Result 4221 states and 4604 transitions. [2022-12-14 11:47:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-12-14 11:47:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 4.9921773142112125) internal successors, (3829), 768 states have internal predecessors, (3829), 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 1915 [2022-12-14 11:47:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:47:47,975 INFO L225 Difference]: With dead ends: 4221 [2022-12-14 11:47:47,975 INFO L226 Difference]: Without dead ends: 4220 [2022-12-14 11:47:48,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6127 GetRequests, 5355 SyntacticMatches, 0 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6885 ImplicationChecksByTransitivity, 148.3s TimeCoverageRelationStatistics Valid=294546, Invalid=303756, Unknown=0, NotChecked=0, Total=598302 [2022-12-14 11:47:48,002 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2158 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:47:48,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 2690 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 11:47:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2022-12-14 11:47:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 3837. [2022-12-14 11:47:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3835 states have (on average 1.1003911342894395) internal successors, (4220), 3836 states have internal predecessors, (4220), 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) [2022-12-14 11:47:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 4220 transitions. [2022-12-14 11:47:48,078 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 4220 transitions. Word has length 1915 [2022-12-14 11:47:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:47:48,079 INFO L495 AbstractCegarLoop]: Abstraction has 3837 states and 4220 transitions. [2022-12-14 11:47:48,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 4.9921773142112125) internal successors, (3829), 768 states have internal predecessors, (3829), 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) [2022-12-14 11:47:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 4220 transitions. [2022-12-14 11:47:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2022-12-14 11:47:48,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:47:48,105 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1] [2022-12-14 11:47:48,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 11:47:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:47:48,305 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:47:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:47:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -510170122, now seen corresponding path program 8 times [2022-12-14 11:47:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:47:48,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633107066] [2022-12-14 11:47:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:47:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:47:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:50:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:50:10,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:50:10,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633107066] [2022-12-14 11:50:10,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633107066] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:50:10,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849742034] [2022-12-14 11:50:10,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:50:10,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:50:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:50:10,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:50:10,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d085e20-c42a-4540-8a04-cfb6cf39a4a0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 11:50:41,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 11:50:41,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:50:41,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 11:50:41,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:50:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:50:43,191 INFO L328 TraceCheckSpWp]: Computing backward predicates...