./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 --- 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-38b53e6 [2022-11-26 01:10:14,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:10:14,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:10:14,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:10:14,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:10:14,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:10:14,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:10:14,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:10:14,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:10:14,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:10:14,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:10:14,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:10:14,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:10:14,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:10:14,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:10:14,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:10:14,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:10:14,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:10:14,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:10:14,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:10:14,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:10:14,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:10:14,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:10:14,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:10:14,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:10:14,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:10:14,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:10:14,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:10:14,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:10:14,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:10:14,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:10:14,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:10:14,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:10:14,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:10:14,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:10:14,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:10:14,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:10:14,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:10:14,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:10:14,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:10:14,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:10:14,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:10:14,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:10:14,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:10:14,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:10:14,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:10:14,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:10:14,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:10:14,774 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:10:14,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:10:14,774 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:10:14,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:10:14,776 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:10:14,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:10:14,777 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:10:14,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:10:14,777 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:10:14,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:10:14,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:10:14,778 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:10:14,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:10:14,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:10:14,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:10:14,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:10:14,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:10:14,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:10:14,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:10:14,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:10:14,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:10:14,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:10:14,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:10:14,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:10:14,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:10:14,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:10:14,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:10:14,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:10:14,784 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:10:14,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:10:14,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:10:14,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:10:14,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:10:14,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:10:14,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:10:14,786 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_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c506323d3bd63f7e6137c28fc1be825d2491f66f4e75ccbab60530df37ca16f1 [2022-11-26 01:10:15,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:10:15,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:10:15,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:10:15,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:10:15,240 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:10:15,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2022-11-26 01:10:18,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:10:18,948 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:10:18,948 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c [2022-11-26 01:10:18,959 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/data/ae403bfcf/73407c8297944ec3a4b8000121d67132/FLAG29c071e07 [2022-11-26 01:10:18,983 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/data/ae403bfcf/73407c8297944ec3a4b8000121d67132 [2022-11-26 01:10:18,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:10:18,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:10:18,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:10:18,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:10:18,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:10:19,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:18" (1/1) ... [2022-11-26 01:10:19,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c007ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19, skipping insertion in model container [2022-11-26 01:10:19,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:18" (1/1) ... [2022-11-26 01:10:19,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:10:19,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:10:19,239 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_c214906b-d682-477f-8bde-b6c6e88eeaba/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c[319,332] [2022-11-26 01:10:19,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:10:19,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:10:19,291 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_c214906b-d682-477f-8bde-b6c6e88eeaba/sv-benchmarks/c/loops-crafted-1/mono-crafted_11.c[319,332] [2022-11-26 01:10:19,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:10:19,319 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:10:19,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19 WrapperNode [2022-11-26 01:10:19,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:10:19,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:10:19,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:10:19,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:10:19,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,364 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-11-26 01:10:19,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:10:19,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:10:19,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:10:19,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:10:19,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:10:19,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:10:19,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:10:19,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:10:19,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (1/1) ... [2022-11-26 01:10:19,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:10:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:10:19,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:10:19,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:10:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:10:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:10:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:10:19,582 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:10:19,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:10:19,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:10:19,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:10:19,756 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:10:19,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:10:19 BoogieIcfgContainer [2022-11-26 01:10:19,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:10:19,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:10:19,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:10:19,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:10:19,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:10:18" (1/3) ... [2022-11-26 01:10:19,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cc750e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:10:19, skipping insertion in model container [2022-11-26 01:10:19,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:19" (2/3) ... [2022-11-26 01:10:19,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cc750e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:10:19, skipping insertion in model container [2022-11-26 01:10:19,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:10:19" (3/3) ... [2022-11-26 01:10:19,771 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_11.c [2022-11-26 01:10:19,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:10:19,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:10:19,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:10:19,914 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;@57a08877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:10:19,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:10:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:10:19,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:19,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:10:19,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:10:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2036168, now seen corresponding path program 1 times [2022-11-26 01:10:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:19,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272158061] [2022-11-26 01:10:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:20,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:20,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272158061] [2022-11-26 01:10:20,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272158061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:20,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:20,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:10:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413341213] [2022-11-26 01:10:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:20,278 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-26 01:10:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:20,312 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-26 01:10:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:20,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-26 01:10:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:20,341 INFO L225 Difference]: With dead ends: 13 [2022-11-26 01:10:20,342 INFO L226 Difference]: Without dead ends: 6 [2022-11-26 01:10:20,345 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 [2022-11-26 01:10:20,349 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:20,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-26 01:10:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-26 01:10:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-26 01:10:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-26 01:10:20,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-26 01:10:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:20,435 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-26 01:10:20,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-26 01:10:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-26 01:10:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:10:20,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:20,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:10:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:10:20,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:10:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 63077927, now seen corresponding path program 1 times [2022-11-26 01:10:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:20,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907017204] [2022-11-26 01:10:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:20,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:20,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907017204] [2022-11-26 01:10:20,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907017204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:10:20,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341311208] [2022-11-26 01:10:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:10:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:10:20,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:10:20,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:10:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:20,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 01:10:20,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:10:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:20,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:10:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:21,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341311208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:10:21,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1818082282] [2022-11-26 01:10:21,202 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:10:21,203 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:10:21,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:10:21,214 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:10:21,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:10:22,025 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:10:22,143 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 100000000)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:10:22,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:10:22,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:10:22,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-26 01:10:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848237981] [2022-11-26 01:10:22,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:10:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:10:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:10:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:10:22,148 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-11-26 01:10:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:22,230 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-11-26 01:10:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:10:22,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 5 [2022-11-26 01:10:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:22,231 INFO L225 Difference]: With dead ends: 13 [2022-11-26 01:10:22,231 INFO L226 Difference]: Without dead ends: 10 [2022-11-26 01:10:22,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:10:22,234 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:22,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-26 01:10:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-26 01:10:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2022-11-26 01:10:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-26 01:10:22,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-11-26 01:10:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:22,240 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-26 01:10:22,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-11-26 01:10:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-26 01:10:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:10:22,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:22,241 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2022-11-26 01:10:22,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:10:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-26 01:10:22,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:10:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -183576985, now seen corresponding path program 2 times [2022-11-26 01:10:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:22,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452690088] [2022-11-26 01:10:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:23,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:23,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452690088] [2022-11-26 01:10:23,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452690088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:10:23,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093465986] [2022-11-26 01:10:23,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:10:23,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:10:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:10:23,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:10:23,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:10:23,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 01:10:23,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:10:23,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 01:10:23,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:10:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:23,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:10:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:25,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093465986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:10:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170010700] [2022-11-26 01:10:25,627 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:10:25,627 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:10:25,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:10:25,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:10:25,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:10:25,818 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:10:26,183 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '172#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 100000000)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:10:26,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:10:26,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:10:26,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-26 01:10:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750978683] [2022-11-26 01:10:26,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:10:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 01:10:26,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 01:10:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-11-26 01:10:26,186 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:49,980 WARN L233 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 75 DAG size of output: 13 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:58,137 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 60 DAG size of output: 13 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:38,616 WARN L233 SmtUtils]: Spent 21.31s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:38,619 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2022-11-26 01:11:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-26 01:11:38,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 01:11:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:38,620 INFO L225 Difference]: With dead ends: 21 [2022-11-26 01:11:38,620 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 01:11:38,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=184, Invalid=361, Unknown=7, NotChecked=0, Total=552 [2022-11-26 01:11:38,622 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:38,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:11:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 01:11:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-26 01:11:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-26 01:11:38,630 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2022-11-26 01:11:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:38,631 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-26 01:11:38,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-26 01:11:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 01:11:38,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:38,632 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2022-11-26 01:11:38,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 01:11:38,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:38,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:11:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1199233305, now seen corresponding path program 3 times [2022-11-26 01:11:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:11:38,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484979797] [2022-11-26 01:11:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:11:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:40,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:11:40,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484979797] [2022-11-26 01:11:40,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484979797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:11:40,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129046881] [2022-11-26 01:11:40,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:11:40,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:11:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:11:40,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:11:40,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 01:11:40,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:11:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:11:40,303 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-26 01:11:40,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:40,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:11:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:56,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129046881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:11:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940041435] [2022-11-26 01:11:56,888 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:11:56,888 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:11:56,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:11:56,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:11:56,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:11:57,109 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:12:02,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '382#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 100000000)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:12:02,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:12:02,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:12:02,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 31 [2022-11-26 01:12:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756474262] [2022-11-26 01:12:02,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:12:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 01:12:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:12:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 01:12:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=868, Unknown=3, NotChecked=0, Total=1190 [2022-11-26 01:12:02,400 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:17:00,331 WARN L233 SmtUtils]: Spent 4.48m on a formula simplification. DAG size of input: 211 DAG size of output: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:02,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:17:04,358 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ (- 99999984) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967279) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 99999985 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967275 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999980)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296)) 99999981) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967273 (* (div (+ (- 99999978) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296)) 99999979) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999983 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999982)) 4294967296) 4294967296) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ 99999977 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999976)) 4294967296) 4294967296) 4294967271) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:17:06,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:17:08,394 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ (- 99999984) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967279) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 99999985 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967275 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999980)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296)) 99999981) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967273 (* (div (+ (- 99999978) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296)) 99999979) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999983 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999982)) 4294967296) 4294967296) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:17:10,410 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ (- 99999984) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967279) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 99999985 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967275 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999980)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296)) 99999981) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999983 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999982)) 4294967296) 4294967296) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:17:12,439 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ (- 99999984) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967279) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 99999985 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999983 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999982)) 4294967296) 4294967296) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:18:51,868 WARN L233 SmtUtils]: Spent 1.32m on a formula simplification. DAG size of input: 136 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:18:54,098 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:18:56,150 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ (- 99999984) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967279) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 99999985 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 4294967296) 99999987) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ (- 99999986) |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 4294967275 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999980)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296)) 99999981) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ 99999975 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967269 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999974)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or (< (+ 4294967273 (* (div (+ (- 99999978) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296)) 99999979) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999983 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999982)) 4294967296) 4294967296) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ 99999977 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999976)) 4294967296) 4294967296) 4294967271) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:18:58,160 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (div |c_ULTIMATE.start_main_~x~0#1| 2))) (< (+ |c_ULTIMATE.start_main_~x~0#1| (* (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1| (* .cse2 (- 2))) 4294967296) 4294967296) 4294967294) (* .cse2 2)))) (.cse1 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 100000000))) (and (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 4294967296) 99999995) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967289 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999994)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (+ 99999993 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0 (< (+ 4294967287 (* (div (+ (- 99999992) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (not .cse1) (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999998)) 4294967296)) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 99999997) |c_ULTIMATE.start_main_~x~0#1|) (< (+ (* (div (+ (- 99999996) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967291) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 4294967296) 99999991) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967285 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999990)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 4294967296) 99999989) |c_ULTIMATE.start_main_~x~0#1|) (< (+ 4294967283 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 99999988)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 (= (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0)))) is different from false [2022-11-26 01:19:23,705 WARN L233 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 91 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:58,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:22:27,093 WARN L233 SmtUtils]: Spent 1.80m on a formula simplification that was a NOOP. DAG size: 191 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:22:29,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:22:31,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:22:33,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:22:35,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:22:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:22:36,258 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-26 01:22:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 01:22:36,260 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 01:22:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:22:36,261 INFO L225 Difference]: With dead ends: 38 [2022-11-26 01:22:36,261 INFO L226 Difference]: Without dead ends: 33 [2022-11-26 01:22:36,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 634.0s TimeCoverageRelationStatistics Valid=543, Invalid=1251, Unknown=40, NotChecked=616, Total=2450 [2022-11-26 01:22:36,263 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 54 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:22:36,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 26 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 256 Invalid, 6 Unknown, 12 Unchecked, 17.4s Time] [2022-11-26 01:22:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-26 01:22:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-26 01:22:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:22:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-11-26 01:22:36,283 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 17 [2022-11-26 01:22:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:22:36,283 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-11-26 01:22:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:22:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-11-26 01:22:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 01:22:36,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:22:36,285 INFO L195 NwaCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2022-11-26 01:22:36,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:22:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:22:36,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:22:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:22:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1569124344, now seen corresponding path program 4 times [2022-11-26 01:22:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:22:36,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843175528] [2022-11-26 01:22:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:22:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:22:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:22:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:22:42,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:22:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843175528] [2022-11-26 01:22:42,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843175528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:22:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959135931] [2022-11-26 01:22:42,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:22:42,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:22:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:22:42,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:22:42,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c214906b-d682-477f-8bde-b6c6e88eeaba/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:22:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:22:42,732 WARN L261 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-26 01:22:42,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:22:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:22:43,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:23:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 405 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:23:25,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959135931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:23:25,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2092094728] [2022-11-26 01:23:25,029 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:23:25,030 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:23:25,030 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:23:25,030 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:23:25,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:23:25,154 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:23:28,022 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '792#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 100000000)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:23:28,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:23:28,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:23:28,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 31] total 61 [2022-11-26 01:23:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578085524] [2022-11-26 01:23:28,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:23:28,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-26 01:23:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:23:28,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-26 01:23:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=3075, Unknown=4, NotChecked=0, Total=4160 [2022-11-26 01:23:28,027 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)