./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/revcpyswp2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/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_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/revcpyswp2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5d836305a9654c4a87b407d535438bc329bb78fc0805b3b823600303a7df507 --- 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 [2022-11-25 23:32:18,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:32:18,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:32:18,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:32:18,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:32:18,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:32:18,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:32:18,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:32:18,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:32:18,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:32:18,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:32:18,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:32:18,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:32:18,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:32:18,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:32:18,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:32:18,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:32:18,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:32:18,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:32:18,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:32:18,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:32:18,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:32:18,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:32:18,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:32:18,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:32:18,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:32:18,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:32:18,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:32:18,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:32:18,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:32:18,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:32:18,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:32:18,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:32:18,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:32:18,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:32:18,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:32:18,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:32:18,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:32:18,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:32:18,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:32:18,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:32:18,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:32:18,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:32:18,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:32:18,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:32:18,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:32:18,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:32:18,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:32:18,620 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:32:18,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:32:18,621 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:32:18,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:32:18,621 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:32:18,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:32:18,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:32:18,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:32:18,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:32:18,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:32:18,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:32:18,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:32:18,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:32:18,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:32:18,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:32:18,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:32:18,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:32:18,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:32:18,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:32:18,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:32:18,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:32:18,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:32:18,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:32:18,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:32:18,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:32:18,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:32:18,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:32:18,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:32:18,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:18,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:32:18,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:32:18,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:32:18,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:32:18,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:32:18,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:32:18,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:32:18,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:32:18,630 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_33db81cd-6a9d-4eac-8946-e12fc6c96eab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d836305a9654c4a87b407d535438bc329bb78fc0805b3b823600303a7df507 [2022-11-25 23:32:18,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:32:18,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:32:18,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:32:18,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:32:18,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:32:18,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-tiling/revcpyswp2.c [2022-11-25 23:32:22,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:32:22,583 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:32:22,584 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/sv-benchmarks/c/array-tiling/revcpyswp2.c [2022-11-25 23:32:22,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/data/7a810d877/b2f7de1bbf1d47ca8ec336be261eb9e0/FLAG0079fbd48 [2022-11-25 23:32:22,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/data/7a810d877/b2f7de1bbf1d47ca8ec336be261eb9e0 [2022-11-25 23:32:22,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:32:22,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:32:22,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:22,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:32:22,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:32:22,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:22,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0c3659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22, skipping insertion in model container [2022-11-25 23:32:22,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:22,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:32:22,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:32:22,853 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_33db81cd-6a9d-4eac-8946-e12fc6c96eab/sv-benchmarks/c/array-tiling/revcpyswp2.c[432,445] [2022-11-25 23:32:22,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:22,893 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:32:22,908 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_33db81cd-6a9d-4eac-8946-e12fc6c96eab/sv-benchmarks/c/array-tiling/revcpyswp2.c[432,445] [2022-11-25 23:32:22,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:22,938 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:32:22,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22 WrapperNode [2022-11-25 23:32:22,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:22,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:22,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:32:22,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:32:22,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:22,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:22,989 INFO L138 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2022-11-25 23:32:22,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:22,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:32:22,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:32:22,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:32:23,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:32:23,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:32:23,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:32:23,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:32:23,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (1/1) ... [2022-11-25 23:32:23,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:23,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:23,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:32:23,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:32:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:32:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:32:23,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:32:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:32:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:32:23,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:32:23,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:32:23,289 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:32:23,292 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:32:23,804 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:32:23,897 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:32:23,904 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 23:32:23,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:23 BoogieIcfgContainer [2022-11-25 23:32:23,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:32:23,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:32:23,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:32:23,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:32:23,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:32:22" (1/3) ... [2022-11-25 23:32:23,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ce879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:23, skipping insertion in model container [2022-11-25 23:32:23,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:22" (2/3) ... [2022-11-25 23:32:23,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ce879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:23, skipping insertion in model container [2022-11-25 23:32:23,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:23" (3/3) ... [2022-11-25 23:32:23,922 INFO L112 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2022-11-25 23:32:23,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:32:23,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-25 23:32:24,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:32:24,083 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;@1ae07a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:32:24,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 23:32:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:32:24,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:24,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:32:24,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 5073693, now seen corresponding path program 1 times [2022-11-25 23:32:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:24,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466838016] [2022-11-25 23:32:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:24,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:24,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466838016] [2022-11-25 23:32:24,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466838016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:24,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:24,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378439881] [2022-11-25 23:32:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:32:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:32:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:32:24,600 INFO L87 Difference]: Start difference. First operand has 53 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:24,826 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-25 23:32:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:32:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:32:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:24,839 INFO L225 Difference]: With dead ends: 104 [2022-11-25 23:32:24,840 INFO L226 Difference]: Without dead ends: 98 [2022-11-25 23:32:24,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:24,851 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:24,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 54 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-25 23:32:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 54. [2022-11-25 23:32:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.84375) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-11-25 23:32:24,903 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 4 [2022-11-25 23:32:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:24,905 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-11-25 23:32:24,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-11-25 23:32:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:32:24,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:24,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:32:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:32:24,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash 157297473, now seen corresponding path program 1 times [2022-11-25 23:32:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:24,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279488365] [2022-11-25 23:32:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:24,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279488365] [2022-11-25 23:32:24,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279488365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:24,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:24,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528608191] [2022-11-25 23:32:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:25,002 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:25,073 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2022-11-25 23:32:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:25,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:32:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:25,075 INFO L225 Difference]: With dead ends: 98 [2022-11-25 23:32:25,076 INFO L226 Difference]: Without dead ends: 54 [2022-11-25 23:32:25,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:25,078 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:25,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-25 23:32:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-25 23:32:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.8125) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-11-25 23:32:25,084 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 5 [2022-11-25 23:32:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:25,085 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-11-25 23:32:25,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-11-25 23:32:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:32:25,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:25,086 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 23:32:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:32:25,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 826585271, now seen corresponding path program 1 times [2022-11-25 23:32:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195340039] [2022-11-25 23:32:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:25,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:25,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195340039] [2022-11-25 23:32:25,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195340039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:25,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317392559] [2022-11-25 23:32:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:25,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:25,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:25,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:32:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:25,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:32:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:25,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:32:25,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317392559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:25,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:32:25,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-25 23:32:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040568766] [2022-11-25 23:32:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:32:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:32:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:32:25,387 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:25,623 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2022-11-25 23:32:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:32:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:32:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:25,625 INFO L225 Difference]: With dead ends: 98 [2022-11-25 23:32:25,625 INFO L226 Difference]: Without dead ends: 97 [2022-11-25 23:32:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:32:25,627 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:25,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 75 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-25 23:32:25,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 53. [2022-11-25 23:32:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.78125) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-11-25 23:32:25,634 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 7 [2022-11-25 23:32:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:25,634 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-11-25 23:32:25,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:25,635 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-11-25 23:32:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:32:25,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:25,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:25,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:25,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash -145647385, now seen corresponding path program 1 times [2022-11-25 23:32:25,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:25,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523926542] [2022-11-25 23:32:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:25,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:32:25,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:25,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523926542] [2022-11-25 23:32:25,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523926542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:25,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:25,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:25,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641413333] [2022-11-25 23:32:25,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:25,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:32:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:25,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:32:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:32:25,937 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-25 23:32:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:26,007 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2022-11-25 23:32:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:32:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:32:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:26,008 INFO L225 Difference]: With dead ends: 78 [2022-11-25 23:32:26,008 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 23:32:26,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:26,010 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:26,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 20 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 23:32:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-11-25 23:32:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.542857142857143) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-25 23:32:26,016 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 8 [2022-11-25 23:32:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:26,017 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-25 23:32:26,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2022-11-25 23:32:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-25 23:32:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:32:26,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:26,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-25 23:32:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:32:26,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -145660326, now seen corresponding path program 1 times [2022-11-25 23:32:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052763585] [2022-11-25 23:32:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:26,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:26,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052763585] [2022-11-25 23:32:26,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052763585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:26,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937687490] [2022-11-25 23:32:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:26,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:26,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:32:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:32:26,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:26,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:26,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937687490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150704341] [2022-11-25 23:32:26,353 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:32:26,353 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:32:26,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:32:26,361 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:32:26,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:32:26,792 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:32:26,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:32:26,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:32:26,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:32:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:27,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:27,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:27,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:27,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:27,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:27,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:27,479 INFO L321 Elim1Store]: treesize reduction 134, result has 12.4 percent of original size [2022-11-25 23:32:27,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 571 treesize of output 540 [2022-11-25 23:32:28,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:28,030 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:32:28,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:32:28,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:28,110 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:32:28,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:32:28,143 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:28,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [150704341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:28,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:32:28,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 14 [2022-11-25 23:32:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324833225] [2022-11-25 23:32:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:32:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:32:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:32:28,431 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-25 23:32:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:28,732 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-11-25 23:32:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:32:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:32:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:28,733 INFO L225 Difference]: With dead ends: 66 [2022-11-25 23:32:28,733 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 23:32:28,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:32:28,735 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:28,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 57 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 23:32:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2022-11-25 23:32:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-25 23:32:28,744 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 8 [2022-11-25 23:32:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:28,745 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-25 23:32:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-25 23:32:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-25 23:32:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 23:32:28,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:28,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:28,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:28,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 875621812, now seen corresponding path program 1 times [2022-11-25 23:32:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:28,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643804710] [2022-11-25 23:32:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:32:29,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:29,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643804710] [2022-11-25 23:32:29,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643804710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:29,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:29,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729581268] [2022-11-25 23:32:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:29,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:32:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:32:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:32:29,067 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:29,193 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-11-25 23:32:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:32:29,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-25 23:32:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:29,195 INFO L225 Difference]: With dead ends: 80 [2022-11-25 23:32:29,195 INFO L226 Difference]: Without dead ends: 78 [2022-11-25 23:32:29,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:29,200 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:29,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 53 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-25 23:32:29,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2022-11-25 23:32:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-11-25 23:32:29,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 16 [2022-11-25 23:32:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:29,214 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-11-25 23:32:29,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-11-25 23:32:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 23:32:29,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:29,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:32:29,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1308399919, now seen corresponding path program 1 times [2022-11-25 23:32:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:29,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393306025] [2022-11-25 23:32:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:32:29,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:29,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393306025] [2022-11-25 23:32:29,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393306025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:29,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:29,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492036775] [2022-11-25 23:32:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:29,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:32:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:32:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:32:29,356 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:29,478 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-11-25 23:32:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:32:29,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 23:32:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:29,481 INFO L225 Difference]: With dead ends: 78 [2022-11-25 23:32:29,482 INFO L226 Difference]: Without dead ends: 76 [2022-11-25 23:32:29,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:29,502 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:29,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 53 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-25 23:32:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2022-11-25 23:32:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-11-25 23:32:29,510 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 20 [2022-11-25 23:32:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:29,512 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-11-25 23:32:29,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-11-25 23:32:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 23:32:29,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:29,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:29,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:32:29,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:29,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1308517536, now seen corresponding path program 1 times [2022-11-25 23:32:29,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:29,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207072576] [2022-11-25 23:32:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:29,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:29,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:29,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207072576] [2022-11-25 23:32:29,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207072576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:29,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34132331] [2022-11-25 23:32:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:29,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:29,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:29,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:32:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:29,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:32:29,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:29,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:29,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34132331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [892607615] [2022-11-25 23:32:29,855 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-25 23:32:29,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:32:29,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:32:29,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:32:29,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:32:30,329 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:32:30,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:32:30,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:32:30,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:32:30,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 83 [2022-11-25 23:32:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:31,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:31,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:31,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:31,629 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-25 23:32:31,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 623 treesize of output 592 [2022-11-25 23:32:32,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:32,800 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:32:32,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:32:33,045 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:33,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:33,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:33,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:33,172 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:32:33,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:32:33,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:33,533 INFO L321 Elim1Store]: treesize reduction 168, result has 30.6 percent of original size [2022-11-25 23:32:33,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 307 treesize of output 246 [2022-11-25 23:32:33,723 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:33,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:33,852 INFO L321 Elim1Store]: treesize reduction 122, result has 27.4 percent of original size [2022-11-25 23:32:33,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2022-11-25 23:32:33,918 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:33,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:34,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:35,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [892607615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:35,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:32:35,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5, 5] total 19 [2022-11-25 23:32:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949351572] [2022-11-25 23:32:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:32:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:32:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:32:35,730 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2022-11-25 23:32:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:40,135 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-11-25 23:32:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:32:40,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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 20 [2022-11-25 23:32:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:40,136 INFO L225 Difference]: With dead ends: 59 [2022-11-25 23:32:40,136 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 23:32:40,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:32:40,138 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:40,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 60 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:32:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 23:32:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2022-11-25 23:32:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-25 23:32:40,147 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2022-11-25 23:32:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:40,148 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-25 23:32:40,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2022-11-25 23:32:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-25 23:32:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:32:40,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:40,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:40,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:40,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:40,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1713673392, now seen corresponding path program 1 times [2022-11-25 23:32:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:40,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485231071] [2022-11-25 23:32:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:40,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:40,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485231071] [2022-11-25 23:32:40,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485231071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783486712] [2022-11-25 23:32:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:40,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:32:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:40,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:32:40,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:40,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783486712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074171604] [2022-11-25 23:32:40,718 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-25 23:32:40,718 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:32:40,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:32:40,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:32:40,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:32:41,130 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:32:41,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:32:41,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:32:41,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:32:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:41,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-25 23:32:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:41,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:42,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:42,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:42,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:42,103 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-25 23:32:42,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 623 treesize of output 592 [2022-11-25 23:32:42,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:42,972 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:32:42,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:32:43,179 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:43,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:43,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:43,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:43,288 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:32:43,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:32:43,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:43,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:43,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:43,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:43,517 INFO L321 Elim1Store]: treesize reduction 168, result has 31.1 percent of original size [2022-11-25 23:32:43,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 257 treesize of output 216 [2022-11-25 23:32:43,674 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:43,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:43,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:43,834 INFO L321 Elim1Store]: treesize reduction 122, result has 27.4 percent of original size [2022-11-25 23:32:43,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2022-11-25 23:32:43,907 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:43,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:43,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:43,986 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:43,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:44,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:44,079 INFO L321 Elim1Store]: treesize reduction 94, result has 27.1 percent of original size [2022-11-25 23:32:44,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 103 [2022-11-25 23:32:44,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:44,150 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:44,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:44,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:44,182 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:44,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:44,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:45,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2074171604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:45,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:32:45,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5, 5] total 20 [2022-11-25 23:32:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886062696] [2022-11-25 23:32:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:32:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:32:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:32:45,939 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:50,853 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-11-25 23:32:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:32:50,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-25 23:32:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:50,854 INFO L225 Difference]: With dead ends: 57 [2022-11-25 23:32:50,854 INFO L226 Difference]: Without dead ends: 55 [2022-11-25 23:32:50,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:32:50,855 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:50,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 52 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:32:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-25 23:32:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2022-11-25 23:32:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-25 23:32:50,864 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2022-11-25 23:32:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:50,864 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-25 23:32:50,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-25 23:32:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 23:32:50,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:50,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:50,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:32:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:51,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1584250061, now seen corresponding path program 1 times [2022-11-25 23:32:51,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:51,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927296883] [2022-11-25 23:32:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:51,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:32:51,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:51,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927296883] [2022-11-25 23:32:51,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927296883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:51,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:51,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908213760] [2022-11-25 23:32:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:32:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:51,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:32:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:32:51,160 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:51,259 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-11-25 23:32:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:32:51,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 23:32:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:51,260 INFO L225 Difference]: With dead ends: 68 [2022-11-25 23:32:51,260 INFO L226 Difference]: Without dead ends: 66 [2022-11-25 23:32:51,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:51,261 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:51,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-25 23:32:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2022-11-25 23:32:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-25 23:32:51,275 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 24 [2022-11-25 23:32:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:51,277 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-25 23:32:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-25 23:32:51,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 23:32:51,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:51,279 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:51,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:32:51,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:32:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1002168084, now seen corresponding path program 1 times [2022-11-25 23:32:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:51,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624117386] [2022-11-25 23:32:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:32:51,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624117386] [2022-11-25 23:32:51,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624117386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125665507] [2022-11-25 23:32:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:51,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:51,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:32:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:51,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:32:51,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:32:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:32:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:32:51,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125665507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:32:51,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109642395] [2022-11-25 23:32:51,592 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 23:32:51,592 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:32:51,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:32:51,592 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:32:51,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:32:51,941 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:32:51,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:32:51,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:32:52,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:32:52,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 83 [2022-11-25 23:32:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:52,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:52,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:52,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:52,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:52,852 INFO L321 Elim1Store]: treesize reduction 237, result has 4.4 percent of original size [2022-11-25 23:32:52,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 655 treesize of output 610 [2022-11-25 23:32:53,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:53,051 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:32:53,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:32:53,239 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:53,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:53,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:53,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:53,331 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:32:53,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:32:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:53,569 INFO L321 Elim1Store]: treesize reduction 168, result has 30.6 percent of original size [2022-11-25 23:32:53,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 191 treesize of output 194 [2022-11-25 23:32:53,725 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:53,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:53,855 INFO L321 Elim1Store]: treesize reduction 122, result has 27.4 percent of original size [2022-11-25 23:32:53,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2022-11-25 23:32:53,930 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:32:53,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:32:54,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,023 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,083 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 92 [2022-11-25 23:32:54,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,146 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,183 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,214 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,255 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:32:54,381 INFO L321 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2022-11-25 23:32:54,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 118 [2022-11-25 23:32:54,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,473 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:32:54,538 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:32:54,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:32:54,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:56,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [109642395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:56,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:32:56,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 5, 5] total 22 [2022-11-25 23:32:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644619489] [2022-11-25 23:32:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:32:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:32:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:32:56,696 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:02,525 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2022-11-25 23:33:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:33:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-25 23:33:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:02,527 INFO L225 Difference]: With dead ends: 64 [2022-11-25 23:33:02,527 INFO L226 Difference]: Without dead ends: 60 [2022-11-25 23:33:02,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2022-11-25 23:33:02,529 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:02,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 34 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:33:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-25 23:33:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2022-11-25 23:33:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-25 23:33:02,540 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 27 [2022-11-25 23:33:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:02,540 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-25 23:33:02,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-25 23:33:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 23:33:02,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:33:02,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:02,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:33:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:02,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:33:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:33:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1528755386, now seen corresponding path program 1 times [2022-11-25 23:33:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:33:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404033170] [2022-11-25 23:33:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:33:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:33:02,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:33:02,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404033170] [2022-11-25 23:33:02,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404033170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:33:02,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:33:02,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:33:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997277167] [2022-11-25 23:33:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:33:02,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:33:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:33:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:33:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:33:02,841 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:02,953 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2022-11-25 23:33:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:33:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-25 23:33:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:02,955 INFO L225 Difference]: With dead ends: 62 [2022-11-25 23:33:02,955 INFO L226 Difference]: Without dead ends: 60 [2022-11-25 23:33:02,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:33:02,956 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:02,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 31 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:33:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-25 23:33:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2022-11-25 23:33:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.2) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-25 23:33:02,967 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 32 [2022-11-25 23:33:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:02,968 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-25 23:33:02,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-25 23:33:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 23:33:02,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:33:02,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:33:02,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:33:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:33:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 352978245, now seen corresponding path program 1 times [2022-11-25 23:33:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:33:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039883549] [2022-11-25 23:33:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:33:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:33:03,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:33:03,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039883549] [2022-11-25 23:33:03,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039883549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:33:03,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239093881] [2022-11-25 23:33:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:33:03,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:33:03,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:33:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:03,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:33:03,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:33:03,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:33:03,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239093881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:03,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1303766829] [2022-11-25 23:33:03,351 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 23:33:03,351 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:33:03,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:33:03,352 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:33:03,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:33:03,661 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:33:03,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:33:03,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:33:03,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:33:03,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 83 [2022-11-25 23:33:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:04,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,298 INFO L321 Elim1Store]: treesize reduction 101, result has 9.8 percent of original size [2022-11-25 23:33:04,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 675 treesize of output 596 [2022-11-25 23:33:04,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,477 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:33:04,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:33:04,630 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:04,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:04,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,731 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:04,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:04,864 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:04,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:04,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:04,982 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:04,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:05,126 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:05,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:05,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,258 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:05,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:05,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,420 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:05,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,448 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:05,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,520 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 142 treesize of output 95 [2022-11-25 23:33:05,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,591 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:05,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,692 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:05,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,734 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:05,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:05,846 INFO L321 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2022-11-25 23:33:05,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 118 [2022-11-25 23:33:05,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:05,920 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:05,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:06,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:33:09,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1303766829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:33:09,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:33:09,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 25 [2022-11-25 23:33:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647551533] [2022-11-25 23:33:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:33:09,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:33:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:33:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:33:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:33:09,163 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:20,200 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2022-11-25 23:33:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 23:33:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-25 23:33:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:20,201 INFO L225 Difference]: With dead ends: 60 [2022-11-25 23:33:20,201 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 23:33:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 23:33:20,203 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:33:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 23:33:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-11-25 23:33:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-25 23:33:20,211 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2022-11-25 23:33:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:20,211 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-25 23:33:20,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-25 23:33:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 23:33:20,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:33:20,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:20,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:33:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 23:33:20,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:33:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:33:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -896743090, now seen corresponding path program 1 times [2022-11-25 23:33:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:33:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588693955] [2022-11-25 23:33:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:33:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:33:20,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:33:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588693955] [2022-11-25 23:33:20,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588693955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:33:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500566713] [2022-11-25 23:33:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:20,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:33:20,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:33:20,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:33:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:20,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:33:20,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:33:20,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:33:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500566713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1076898189] [2022-11-25 23:33:20,846 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 23:33:20,847 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:33:20,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:33:20,847 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:33:20,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:33:21,163 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:33:21,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:33:21,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 61 [2022-11-25 23:33:21,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:33:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 83 [2022-11-25 23:33:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:21,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:21,900 INFO L321 Elim1Store]: treesize reduction 101, result has 9.8 percent of original size [2022-11-25 23:33:21,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 675 treesize of output 596 [2022-11-25 23:33:22,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,050 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:33:22,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:33:22,234 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:22,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:22,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,320 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:22,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:22,419 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:22,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:22,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,534 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:22,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:22,676 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:22,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:22,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,811 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:22,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:22,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:22,972 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:22,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:22,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,002 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:23,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:23,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:23,121 INFO L321 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2022-11-25 23:33:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 118 [2022-11-25 23:33:23,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,176 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:23,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:23,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,251 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:23,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:23,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,289 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:23,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:23,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:23,391 INFO L321 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2022-11-25 23:33:23,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 118 [2022-11-25 23:33:23,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:23,454 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:23,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:23,759 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:33:26,147 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3059#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (< 2147483646 |ULTIMATE.start_main_#t~post21#1|) (<= 1 ~SIZE~0) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) (<= ~SIZE~0 100000) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:33:26,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:33:26,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:33:26,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 23:33:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116375428] [2022-11-25 23:33:26,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:33:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:33:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:33:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:33:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:33:26,149 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:26,268 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-11-25 23:33:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:33:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 40 [2022-11-25 23:33:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:26,269 INFO L225 Difference]: With dead ends: 81 [2022-11-25 23:33:26,269 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 23:33:26,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:33:26,271 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:26,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:33:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 23:33:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-11-25 23:33:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-25 23:33:26,282 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 40 [2022-11-25 23:33:26,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:26,283 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-25 23:33:26,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-25 23:33:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:33:26,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:33:26,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:26,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:33:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 23:33:26,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 23:33:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:33:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash 452643304, now seen corresponding path program 2 times [2022-11-25 23:33:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:33:26,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643823962] [2022-11-25 23:33:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:33:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:33:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:33:26,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:33:26,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643823962] [2022-11-25 23:33:26,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643823962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:33:26,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975786079] [2022-11-25 23:33:26,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:33:26,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:26,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:33:26,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:33:26,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:33:26,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 23:33:26,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:33:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:33:26,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:33:26,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:33:26,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975786079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:33:26,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [946382459] [2022-11-25 23:33:26,888 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 23:33:26,888 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:33:26,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:33:26,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:33:26,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:33:27,166 INFO L321 Elim1Store]: treesize reduction 339, result has 19.5 percent of original size [2022-11-25 23:33:27,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 100 [2022-11-25 23:33:27,487 INFO L321 Elim1Store]: treesize reduction 402, result has 16.4 percent of original size [2022-11-25 23:33:27,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 80 treesize of output 137 [2022-11-25 23:33:27,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-25 23:33:27,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 83 [2022-11-25 23:33:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:27,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:27,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:28,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,075 INFO L321 Elim1Store]: treesize reduction 237, result has 4.4 percent of original size [2022-11-25 23:33:28,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 655 treesize of output 610 [2022-11-25 23:33:28,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,243 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-25 23:33:28,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-25 23:33:28,406 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:28,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:28,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,490 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:28,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:28,592 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:28,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:28,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,701 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:28,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:28,835 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-11-25 23:33:28,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-11-25 23:33:28,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:28,943 INFO L321 Elim1Store]: treesize reduction 120, result has 43.4 percent of original size [2022-11-25 23:33:28,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 106 [2022-11-25 23:33:29,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,075 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,105 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:29,180 INFO L321 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-11-25 23:33:29,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 102 [2022-11-25 23:33:29,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,247 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,373 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,398 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:33:29,489 INFO L321 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2022-11-25 23:33:29,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 118 [2022-11-25 23:33:29,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:33:29,554 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 23:33:29,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 26 [2022-11-25 23:33:29,821 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:33:32,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3493#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (< 2147483646 |ULTIMATE.start_main_#t~post21#1|) (<= 1 ~SIZE~0) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) (<= ~SIZE~0 100000) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:33:32,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:33:32,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:33:32,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 9 [2022-11-25 23:33:32,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325046223] [2022-11-25 23:33:32,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:33:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:33:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:33:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:33:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:33:32,287 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:33:32,526 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-11-25 23:33:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:33:32,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 43 [2022-11-25 23:33:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:33:32,527 INFO L225 Difference]: With dead ends: 81 [2022-11-25 23:33:32,527 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:33:32,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-11-25 23:33:32,529 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:33:32,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 22 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:33:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:33:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:33:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:33:32,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2022-11-25 23:33:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:33:32,532 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:33:32,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:33:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:33:32,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:33:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2022-11-25 23:33:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-25 23:33:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-25 23:33:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-25 23:33:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-25 23:33:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-25 23:33:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-25 23:33:32,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-25 23:33:32,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-25 23:33:32,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-25 23:33:32,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-25 23:33:32,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-25 23:33:32,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-25 23:33:32,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2022-11-25 23:33:32,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-25 23:33:32,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-25 23:33:32,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-25 23:33:32,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-25 23:33:32,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-25 23:33:32,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-25 23:33:32,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-25 23:33:32,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-25 23:33:32,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:33:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:33:32,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:33:34,788 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2022-11-25 23:33:34,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,789 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2022-11-25 23:33:34,789 INFO L899 garLoopResultBuilder]: For program point L36-4(line 36) no Hoare annotation was computed. [2022-11-25 23:33:34,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-25 23:33:34,790 INFO L895 garLoopResultBuilder]: At program point L36-5(lines 36 40) the Hoare annotation is: (let ((.cse0 (<= 2 ~SIZE~0)) (.cse1 (<= ~SIZE~0 100000))) (or (and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse0 (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (<= |#NULL.offset| 0) (<= 100000 ~MAX~0) .cse1 (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a_copy~0#1.offset|) (<= 0 |ULTIMATE.start_main_~b_copy~0#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (<= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~MAX~0 100000)) (let ((.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= 13 (select |#length| 2)) (= ~MAX~0 100000) .cse0 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) .cse1 (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) [2022-11-25 23:33:34,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point L61-1(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point L61-2(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point L61-3(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,791 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 64) no Hoare annotation was computed. [2022-11-25 23:33:34,792 INFO L902 garLoopResultBuilder]: At program point L20-1(lines 20 64) the Hoare annotation is: true [2022-11-25 23:33:34,792 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,792 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-25 23:33:34,792 INFO L899 garLoopResultBuilder]: For program point L29-3(line 29) no Hoare annotation was computed. [2022-11-25 23:33:34,792 INFO L899 garLoopResultBuilder]: For program point L29-4(line 29) no Hoare annotation was computed. [2022-11-25 23:33:34,793 INFO L895 garLoopResultBuilder]: At program point L29-5(lines 29 33) the Hoare annotation is: (let ((.cse16 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (= 13 (select |#length| 2))) (.cse2 (<= 2 ~SIZE~0)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (= |ULTIMATE.start_main_~b~0#1.offset| 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse16 0) 48)) (.cse12 (= (select .cse16 1) 0)) (.cse13 (< 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse2 .cse3 .cse4 .cse5 (<= 100000 ~MAX~0) (<= ~SIZE~0 100000) .cse6 (<= 0 |ULTIMATE.start_main_~a_copy~0#1.offset|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~MAX~0 100000) .cse13 .cse14) (let ((.cse15 (* 4 (mod ~SIZE~0 1073741824)))) (and (not (= 3 |ULTIMATE.start_main_~b~0#1.base|)) (< |ULTIMATE.start_main_~a_copy~0#1.base| |#StackHeapBarrier|) (not (= 3 |ULTIMATE.start_main_~a_copy~0#1.base|)) (not (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~a_copy~0#1.base|)) .cse0 (< |ULTIMATE.start_main_~a~0#1.base| |#StackHeapBarrier|) (not (= |ULTIMATE.start_main_~b_copy~0#1.base| 3)) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (< ~SIZE~0 ~MAX~0) (< |ULTIMATE.start_main_~b~0#1.base| |#StackHeapBarrier|) .cse1 (= ~MAX~0 100000) (< |ULTIMATE.start_main_~b_copy~0#1.base| |#StackHeapBarrier|) .cse2 (= .cse15 (select |#length| |ULTIMATE.start_main_~b_copy~0#1.base|)) .cse3 (not (= |ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a_copy~0#1.base|)) (= .cse15 (select |#length| |ULTIMATE.start_main_~b~0#1.base|)) .cse4 (not (= |ULTIMATE.start_main_~b_copy~0#1.base| |ULTIMATE.start_main_~b~0#1.base|)) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~a_copy~0#1.base|) 1) .cse5 (= (select |#length| |ULTIMATE.start_main_~a~0#1.base|) .cse15) (= (select |#valid| |ULTIMATE.start_main_~b~0#1.base|) 1) .cse6 (not (= |ULTIMATE.start_main_~b_copy~0#1.base| |ULTIMATE.start_main_~a_copy~0#1.base|)) (not (= |ULTIMATE.start_main_~b_copy~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) .cse7 .cse8 (not (= |ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (= .cse15 (select |#length| |ULTIMATE.start_main_~a_copy~0#1.base|)) .cse9 .cse10 .cse11 (not (= 3 |ULTIMATE.start_main_~a~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~b_copy~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~a~0#1.base|) 1) .cse12 .cse13 .cse14))))) [2022-11-25 23:33:34,793 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,793 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point L38-2(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point L38-3(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,794 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point L39-2(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point L39-3(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:33:34,795 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2022-11-25 23:33:34,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2022-11-25 23:33:34,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2022-11-25 23:33:34,797 INFO L899 garLoopResultBuilder]: For program point L59-3(line 59) no Hoare annotation was computed. [2022-11-25 23:33:34,797 INFO L899 garLoopResultBuilder]: For program point L59-4(line 59) no Hoare annotation was computed. [2022-11-25 23:33:34,797 INFO L895 garLoopResultBuilder]: At program point L59-5(lines 59 63) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~a~0#1.offset| 0)) (.cse1 (= ~MAX~0 100000)) (.cse2 (<= 2 ~SIZE~0)) (.cse3 (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0)) (.cse4 (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0)) (.cse5 (<= ~SIZE~0 100000)) (.cse6 (= |ULTIMATE.start_main_~b~0#1.offset| 0)) (.cse7 (= |#NULL.offset| 0)) (.cse8 (<= 0 |#StackHeapBarrier|)) (.cse9 (= |#NULL.base| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse2 .cse3 .cse4 .cse5 (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) .cse6 .cse7 (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) .cse8 .cse9))) [2022-11-25 23:33:34,798 INFO L899 garLoopResultBuilder]: For program point L51-3(line 51) no Hoare annotation was computed. [2022-11-25 23:33:34,798 INFO L899 garLoopResultBuilder]: For program point L51-4(line 51) no Hoare annotation was computed. [2022-11-25 23:33:34,798 INFO L895 garLoopResultBuilder]: At program point L51-5(lines 51 56) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 2 ~SIZE~0) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) (<= 100000 ~MAX~0) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~i~0#1| 100000) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~MAX~0 100000) (= |#NULL.base| 0)) [2022-11-25 23:33:34,798 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2022-11-25 23:33:34,798 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2022-11-25 23:33:34,799 INFO L899 garLoopResultBuilder]: For program point L43-3(line 43) no Hoare annotation was computed. [2022-11-25 23:33:34,799 INFO L899 garLoopResultBuilder]: For program point L43-4(line 43) no Hoare annotation was computed. [2022-11-25 23:33:34,799 INFO L895 garLoopResultBuilder]: At program point L43-5(lines 43 48) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 2 ~SIZE~0) (= |ULTIMATE.start_main_~a_copy~0#1.offset| 0) (= |ULTIMATE.start_main_~b_copy~0#1.offset| 0) (<= 100000 ~MAX~0) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~i~0#1| 100000) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~MAX~0 100000) (= |#NULL.base| 0)) [2022-11-25 23:33:34,803 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:33:34,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:33:34,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:33:34 BoogieIcfgContainer [2022-11-25 23:33:34,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:33:34,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:33:34,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:33:34,837 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:33:34,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:23" (3/4) ... [2022-11-25 23:33:34,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:33:34,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 23:33:34,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-25 23:33:34,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:33:34,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:33:34,883 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((a == 0 && i == 0) && MAX == 100000) && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && SIZE <= 100000) && b == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((a == 0 && 1 <= i) && MAX == 100000) && i <= 2147483647) && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && SIZE <= 100000) && cond <= 1) && \old(cond) <= 1) && b == 0) && #NULL == 0) && 0 <= cond) && 0 <= \old(cond)) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2022-11-25 23:33:34,900 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:33:34,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:33:34,901 INFO L158 Benchmark]: Toolchain (without parser) took 72282.47ms. Allocated memory was 121.6MB in the beginning and 287.3MB in the end (delta: 165.7MB). Free memory was 85.3MB in the beginning and 117.5MB in the end (delta: -32.2MB). Peak memory consumption was 136.2MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,901 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:33:34,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.04ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 73.9MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.54ms. Allocated memory is still 121.6MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,902 INFO L158 Benchmark]: Boogie Preprocessor took 81.26ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:33:34,903 INFO L158 Benchmark]: RCFGBuilder took 834.66ms. Allocated memory is still 121.6MB. Free memory was 70.5MB in the beginning and 51.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,903 INFO L158 Benchmark]: TraceAbstraction took 70925.63ms. Allocated memory was 121.6MB in the beginning and 287.3MB in the end (delta: 165.7MB). Free memory was 50.5MB in the beginning and 121.7MB in the end (delta: -71.2MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,903 INFO L158 Benchmark]: Witness Printer took 63.67ms. Allocated memory is still 287.3MB. Free memory was 121.7MB in the beginning and 117.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:33:34,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.04ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 73.9MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.54ms. Allocated memory is still 121.6MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.26ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 834.66ms. Allocated memory is still 121.6MB. Free memory was 70.5MB in the beginning and 51.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 70925.63ms. Allocated memory was 121.6MB in the beginning and 287.3MB in the end (delta: 165.7MB). Free memory was 50.5MB in the beginning and 121.7MB in the end (delta: -71.2MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. * Witness Printer took 63.67ms. Allocated memory is still 287.3MB. Free memory was 121.7MB in the beginning and 117.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 70.7s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 648 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 646 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 394 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2265 IncrementalHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 252 mSDtfsCounter, 2265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 432 SyntacticMatches, 56 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 38.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=7, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 236 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 18 NumberOfFragments, 600 HoareAnnotationTreeSize, 6 FomulaSimplifications, 612 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1881 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 517 NumberOfCodeBlocks, 487 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 1366 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1290 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 123/162 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 15.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 104, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 319, TOOLS_POST_TIME: 13.8s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 319, TOOLS_QUANTIFIERELIM_TIME: 13.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 1.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 517, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 33, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 26, DOMAIN_WIDEN_TIME: 0.8s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 41, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 104, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 15, LOOP_SUMMARIZER_CACHE_MISSES: 15, LOOP_SUMMARIZER_OVERALL_TIME: 10.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 10.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 41, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 4785, DAG_COMPRESSION_RETAINED_NODES: 347, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: ((((((((((((0 <= a && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && 100000 <= MAX) && SIZE <= 100000) && 0 <= i) && b == 0) && #NULL == 0) && i <= 100000) && 0 <= unknown-#StackHeapBarrier-unknown) && a <= 0) && MAX <= 100000) && #NULL == 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((((((((((0 <= #NULL && 0 <= a) && 1 <= i) && i <= 2147483647) && 2 <= SIZE) && 0 <= b) && #NULL <= 0) && 100000 <= MAX) && SIZE <= 100000) && #NULL <= 0) && b <= 0) && 0 <= a_copy) && 0 <= b_copy) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && a_copy <= 0) && b_copy <= 0) && a <= 0) && MAX <= 100000) || (((((((((((((((((((unknown-#length-unknown[3] == 12 && a == 0) && i == 0) && 13 == unknown-#length-unknown[2]) && MAX == 100000) && 2 <= SIZE) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && a_copy == 0) && b_copy == 0) && SIZE <= 100000) && \valid[1] == 1) && \valid[0] == 0) && b == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((((a == 0 && i == 0) && MAX == 100000) && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && SIZE <= 100000) && b == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((a == 0 && 1 <= i) && MAX == 100000) && i <= 2147483647) && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && SIZE <= 100000) && cond <= 1) && \old(cond) <= 1) && b == 0) && #NULL == 0) && 0 <= cond) && 0 <= \old(cond)) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((((((((((((0 <= a && 2 <= SIZE) && a_copy == 0) && b_copy == 0) && 100000 <= MAX) && SIZE <= 100000) && 0 <= i) && b == 0) && #NULL == 0) && i <= 100000) && 0 <= unknown-#StackHeapBarrier-unknown) && a <= 0) && MAX <= 100000) && #NULL == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && 0 <= a) && 13 == unknown-#length-unknown[2]) && 1 <= i) && i <= 2147483647) && 2 <= SIZE) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b_copy == 0) && 100000 <= MAX) && SIZE <= 100000) && \valid[1] == 1) && 0 <= a_copy) && \valid[0] == 0) && b == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && a_copy <= 0) && a <= 0) && MAX <= 100000) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((((((((((((((((((!(3 == b) && a_copy < unknown-#StackHeapBarrier-unknown) && !(3 == a_copy)) && !(a == a_copy)) && unknown-#length-unknown[3] == 12) && a < unknown-#StackHeapBarrier-unknown) && !(b_copy == 3)) && a == 0) && i == 0) && SIZE < MAX) && b < unknown-#StackHeapBarrier-unknown) && 13 == unknown-#length-unknown[2]) && MAX == 100000) && b_copy < unknown-#StackHeapBarrier-unknown) && 2 <= SIZE) && 4 * (SIZE % 1073741824) == unknown-#length-unknown[b_copy]) && 2 == unknown-#length-unknown[1]) && !(b == a_copy)) && 4 * (SIZE % 1073741824) == unknown-#length-unknown[b]) && \valid[3] == 1) && !(b_copy == b)) && a_copy == 0) && \valid[a_copy] == 1) && b_copy == 0) && unknown-#length-unknown[a] == 4 * (SIZE % 1073741824)) && \valid[b] == 1) && \valid[1] == 1) && !(b_copy == a_copy)) && !(b_copy == a)) && \valid[0] == 0) && b == 0) && !(b == a)) && 4 * (SIZE % 1073741824) == unknown-#length-unknown[a_copy]) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && !(3 == a)) && \valid[b_copy] == 1) && \valid[a] == 1) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-25 23:33:34,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33db81cd-6a9d-4eac-8946-e12fc6c96eab/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE