./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 --- 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-b5237d8 [2022-11-22 00:32:14,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:32:14,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:32:14,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:32:14,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:32:14,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:32:14,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:32:14,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:32:14,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:32:14,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:32:14,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:32:14,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:32:14,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:32:14,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:32:14,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:32:14,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:32:14,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:32:14,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:32:14,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:32:14,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:32:14,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:32:14,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:32:14,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:32:14,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:32:14,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:32:14,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:32:14,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:32:14,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:32:14,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:32:14,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:32:14,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:32:14,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:32:14,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:32:14,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:32:14,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:32:14,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:32:14,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:32:14,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:32:14,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:32:14,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:32:14,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:32:14,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:32:14,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:32:14,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:32:14,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:32:14,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:32:14,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:32:14,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:32:14,817 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:32:14,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:32:14,818 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:32:14,818 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:32:14,819 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:32:14,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:32:14,820 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:32:14,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:32:14,820 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:32:14,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:32:14,821 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:32:14,821 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:32:14,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:32:14,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:32:14,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:32:14,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:32:14,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:32:14,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:32:14,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:32:14,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:32:14,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:32:14,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:32:14,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:32:14,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:32:14,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:32:14,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:32:14,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:14,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:32:14,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:32:14,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:32:14,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:32:14,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:32:14,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:32:14,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:32:14,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:32:14,827 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_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 [2022-11-22 00:32:15,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:32:15,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:32:15,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:32:15,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:32:15,119 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:32:15,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/reducercommutativity/rangesum.i [2022-11-22 00:32:18,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:32:18,334 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:32:18,334 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/sv-benchmarks/c/reducercommutativity/rangesum.i [2022-11-22 00:32:18,343 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/data/49cb149e3/3bafb434cc5545a1915f073bc29a58d2/FLAG3c1debc96 [2022-11-22 00:32:18,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/data/49cb149e3/3bafb434cc5545a1915f073bc29a58d2 [2022-11-22 00:32:18,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:32:18,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:32:18,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:18,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:32:18,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:32:18,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec40a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18, skipping insertion in model container [2022-11-22 00:32:18,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:32:18,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:32:18,642 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_4b522777-319b-47cd-9b77-2a3b4623dd6d/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2022-11-22 00:32:18,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:18,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:32:18,682 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_4b522777-319b-47cd-9b77-2a3b4623dd6d/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2022-11-22 00:32:18,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:18,695 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:32:18,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18 WrapperNode [2022-11-22 00:32:18,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:18,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:18,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:32:18,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:32:18,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,736 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-11-22 00:32:18,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:18,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:32:18,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:32:18,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:32:18,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:32:18,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:32:18,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:32:18,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:32:18,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (1/1) ... [2022-11-22 00:32:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:18,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:32:18,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:32:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:32:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:32:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:32:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:32:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:32:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:32:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:32:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-11-22 00:32:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-11-22 00:32:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:32:18,940 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:32:18,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:32:19,118 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:32:19,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:32:19,222 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:32:19,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:19 BoogieIcfgContainer [2022-11-22 00:32:19,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:32:19,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:32:19,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:32:19,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:32:19,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:32:18" (1/3) ... [2022-11-22 00:32:19,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509271dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:19, skipping insertion in model container [2022-11-22 00:32:19,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:18" (2/3) ... [2022-11-22 00:32:19,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509271dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:19, skipping insertion in model container [2022-11-22 00:32:19,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:19" (3/3) ... [2022-11-22 00:32:19,233 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum.i [2022-11-22 00:32:19,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:32:19,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:32:19,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:32:19,305 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;@70229c43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:32:19,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:32:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:19,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:32:19,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 890449984, now seen corresponding path program 1 times [2022-11-22 00:32:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233528122] [2022-11-22 00:32:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233528122] [2022-11-22 00:32:19,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 00:32:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344664040] [2022-11-22 00:32:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:19,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:19,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:32:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:19,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:19,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:19,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344664040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:32:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514266935] [2022-11-22 00:32:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:19,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:32:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:32:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:19,783 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:32:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:19,858 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-11-22 00:32:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:32:19,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2022-11-22 00:32:19,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:19,873 INFO L225 Difference]: With dead ends: 36 [2022-11-22 00:32:19,873 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 00:32:19,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:32:19,881 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:19,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 00:32:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 00:32:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-22 00:32:19,932 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-11-22 00:32:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:19,933 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-22 00:32:19,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:32:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-22 00:32:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 00:32:19,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:19,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:19,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:20,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 00:32:20,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -857535421, now seen corresponding path program 1 times [2022-11-22 00:32:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:20,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059496446] [2022-11-22 00:32:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:20,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872341955] [2022-11-22 00:32:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:20,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:20,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:20,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:32:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:20,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:32:20,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:20,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 00:32:20,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:20,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059496446] [2022-11-22 00:32:20,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:20,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872341955] [2022-11-22 00:32:20,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872341955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:20,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1831016890] [2022-11-22 00:32:20,508 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:32:20,509 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:20,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:20,518 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:20,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:20,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:20,662 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-22 00:32:20,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-22 00:32:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:20,752 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:32:20,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:32:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:20,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-22 00:32:20,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:20,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:20,946 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-22 00:32:20,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 222 [2022-11-22 00:32:21,086 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:32:21,287 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 27 for LOIs [2022-11-22 00:32:21,304 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:21,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1831016890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:21,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:21,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 11 [2022-11-22 00:32:21,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546860183] [2022-11-22 00:32:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:21,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:32:21,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:32:21,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:32:21,682 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:32:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:21,935 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-11-22 00:32:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:32:21,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-11-22 00:32:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:21,939 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:32:21,939 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 00:32:21,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:32:21,941 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:21,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 00:32:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-22 00:32:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-22 00:32:21,949 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 22 [2022-11-22 00:32:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:21,950 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-22 00:32:21,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:32:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-22 00:32:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 00:32:21,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:21,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:21,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:22,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash -235427948, now seen corresponding path program 1 times [2022-11-22 00:32:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773158994] [2022-11-22 00:32:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:22,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:22,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:22,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473961156] [2022-11-22 00:32:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:22,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:22,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:22,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:32:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:22,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:32:22,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:32:22,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:32:22,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773158994] [2022-11-22 00:32:22,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473961156] [2022-11-22 00:32:22,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473961156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1875469461] [2022-11-22 00:32:22,393 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:32:22,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:22,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:22,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:22,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:22,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,447 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-22 00:32:22,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-22 00:32:22,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,483 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:32:22,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:32:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-22 00:32:22,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,666 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-22 00:32:22,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 222 [2022-11-22 00:32:22,745 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:32:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:22,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 00:32:23,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:23,076 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 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-22 00:32:23,320 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 17 for LOIs [2022-11-22 00:32:23,397 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:24,586 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '522#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 1 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 1 ~N~0) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~i~2#1| 0) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= ~N~0 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:32:24,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:32:24,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:24,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-22 00:32:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801205944] [2022-11-22 00:32:24,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:32:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:32:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:24,589 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-22 00:32:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:24,634 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-11-22 00:32:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:32:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-11-22 00:32:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:24,635 INFO L225 Difference]: With dead ends: 33 [2022-11-22 00:32:24,635 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 00:32:24,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:24,637 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 00:32:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 00:32:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 00:32:24,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2022-11-22 00:32:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:24,644 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 00:32:24,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-22 00:32:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 00:32:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:32:24,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:24,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:24,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:24,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-22 00:32:24,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash 648268311, now seen corresponding path program 2 times [2022-11-22 00:32:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:24,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698554023] [2022-11-22 00:32:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:24,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:24,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:24,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273940962] [2022-11-22 00:32:24,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:32:24,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:24,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:24,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:24,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:32:24,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:32:24,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:24,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:32:24,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:32:25,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:25,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698554023] [2022-11-22 00:32:25,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273940962] [2022-11-22 00:32:25,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273940962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:25,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:25,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:32:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437925249] [2022-11-22 00:32:25,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:32:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:32:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:32:25,005 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:32:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:25,042 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-22 00:32:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:32:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-22 00:32:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:25,044 INFO L225 Difference]: With dead ends: 29 [2022-11-22 00:32:25,045 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 00:32:25,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:32:25,048 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:25,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 00:32:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-22 00:32:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-22 00:32:25,062 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2022-11-22 00:32:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:25,064 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-22 00:32:25,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:32:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-22 00:32:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 00:32:25,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:25,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:25,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:25,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:25,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1533229909, now seen corresponding path program 1 times [2022-11-22 00:32:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:25,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035500040] [2022-11-22 00:32:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:25,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430847663] [2022-11-22 00:32:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:25,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:32:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:25,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:32:25,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 00:32:25,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 00:32:25,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035500040] [2022-11-22 00:32:25,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:32:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430847663] [2022-11-22 00:32:25,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430847663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:32:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [121790463] [2022-11-22 00:32:25,516 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:32:25,516 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:25,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:25,516 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:25,517 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:25,548 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-22 00:32:25,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-22 00:32:25,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:25,582 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:32:25,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:32:25,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:25,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 00:32:25,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:25,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:25,699 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-22 00:32:25,699 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 4 case distinctions, treesize of input 224 treesize of output 223 [2022-11-22 00:32:25,796 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:32:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:25,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 00:32:26,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:26,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:26,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 00:32:26,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:32:26,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:32:26,151 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:32:26,254 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 17 for LOIs [2022-11-22 00:32:26,320 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:27,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '933#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 1 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= ~N~0 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 1 ~N~0) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:32:27,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:32:27,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:27,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2022-11-22 00:32:27,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413274240] [2022-11-22 00:32:27,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:27,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:27,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:32:27,322 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:32:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:27,367 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-11-22 00:32:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:32:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2022-11-22 00:32:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:27,369 INFO L225 Difference]: With dead ends: 35 [2022-11-22 00:32:27,369 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 00:32:27,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:32:27,370 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:27,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:32:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 00:32:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 00:32:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:32:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-22 00:32:27,383 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2022-11-22 00:32:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:27,384 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-22 00:32:27,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:32:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-22 00:32:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 00:32:27,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:27,387 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:27,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:27,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1502007822, now seen corresponding path program 2 times [2022-11-22 00:32:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:27,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846272876] [2022-11-22 00:32:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:27,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:32:27,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216680053] [2022-11-22 00:32:27,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:32:27,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:27,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:27,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:32:27,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 00:32:27,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:32:27,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-22 00:32:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:32:28,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:30,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:30,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 95 [2022-11-22 00:32:44,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:44,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 423 treesize of output 339 [2022-11-22 00:37:12,598 WARN L233 SmtUtils]: Spent 3.88m on a formula simplification. DAG size of input: 171 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:37:19,181 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:37:19,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2022-11-22 00:37:37,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2022-11-22 00:37:47,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:37:47,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 95 [2022-11-22 00:38:03,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:38:03,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 365 treesize of output 281 [2022-11-22 00:38:09,170 WARN L859 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_rangesum_~cnt~0 1))) (let ((.cse3 (< .cse2 0)) (.cse36 (div c_~N~0 2))) (let ((.cse0 (< .cse36 c_rangesum_~i~1)) (.cse5 (not .cse3)) (.cse8 (= .cse2 0))) (and (or (not .cse0) (and (or (and (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse1 (div v_rangesum_~ret~0_103 .cse2))) (or (<= (mod (+ .cse1 1) 4294967296) 2147483647) (<= (mod .cse1 4294967296) 2147483647)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse2) 0) (not (<= (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296) 2147483647)))) .cse3) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 .cse2) 0)) (<= (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse4 (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296))) (or (< v_rangesum_~ret~0_103 0) (= .cse4 0) (not (<= .cse4 2147483647))))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296) 2147483647)) .cse5) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse6 (div v_rangesum_~ret~0_103 .cse2))) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse2) 0) (= (mod (+ .cse6 4294967295) 4294967296) 0) (not (<= (mod .cse6 4294967296) 2147483647))))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse7 (mod (div v_rangesum_~ret~0_103 .cse2) 4294967296))) (or (not (= (mod v_rangesum_~ret~0_103 .cse2) 0)) (= .cse7 0) (not (<= .cse7 2147483647)))))) .cse8) (let ((.cse10 (+ 2 c_rangesum_~cnt~0))) (or (let ((.cse14 (< .cse10 0))) (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse9 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse11 (mod (div .cse9 .cse10) 4294967296))) (or (not (= (mod .cse9 .cse10) 0)) (= .cse11 0) (not (<= .cse11 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse12 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse12 0) (<= (mod (div .cse12 .cse10) 4294967296) 2147483647)))) (or (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse13 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (<= (mod (div .cse13 .cse10) 4294967296) 2147483647)) (not (< .cse13 0)) (= (mod .cse13 .cse10) 0)))) .cse14) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse16 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse15 (div .cse16 .cse10))) (or (not (<= (mod .cse15 4294967296) 2147483647)) (= (mod (+ .cse15 4294967295) 4294967296) 0) (not (< .cse16 0)) (= (mod .cse16 .cse10) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse17 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse18 (mod (div .cse17 .cse10) 4294967296))) (or (< .cse17 0) (= .cse18 0) (not (<= .cse18 2147483647)))))) (or (not .cse14) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse10) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse19 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (= (mod .cse19 .cse10) 0)) (<= (mod (div .cse19 .cse10) 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse20 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse10))) (or (<= (mod (+ .cse20 1) 4294967296) 2147483647) (<= (mod .cse20 4294967296) 2147483647)))))) (= .cse10 0))))) (or .cse0 (and (or (let ((.cse21 (< c_rangesum_~cnt~0 0))) (and (or .cse21 (forall ((v_rangesum_~ret~0_103 Int)) (or (not (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse22 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse22 2147483647)) (< v_rangesum_~ret~0_103 0) (= .cse22 0)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse23 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse23 2147483647)) (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (= .cse23 0)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) (not .cse21)) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse24 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (not (<= (mod .cse24 4294967296) 2147483647)) (= (mod (+ 4294967295 .cse24) 4294967296) 0) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse25 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (<= (mod (+ .cse25 1) 4294967296) 2147483647) (<= (mod .cse25 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647))))) (= c_rangesum_~cnt~0 0)) (or (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse26 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse26 0) (<= (mod (div .cse26 .cse2) 4294967296) 2147483647)))) (or .cse5 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse2) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse27 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse2))) (or (<= (mod (+ .cse27 1) 4294967296) 2147483647) (<= (mod .cse27 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse28 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse29 (mod (div .cse28 .cse2) 4294967296))) (or (< .cse28 0) (= .cse29 0) (not (<= .cse29 2147483647)))))) (or .cse3 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse30 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (< .cse30 0)) (= (mod .cse30 .cse2) 0) (not (<= (mod (div .cse30 .cse2) 4294967296) 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse31 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (<= (mod (div .cse31 .cse2) 4294967296) 2147483647) (not (= (mod .cse31 .cse2) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse33 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse32 (mod (div .cse33 .cse2) 4294967296))) (or (= .cse32 0) (not (= (mod .cse33 .cse2) 0)) (not (<= .cse32 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse35 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse34 (div .cse35 .cse2))) (or (= (mod (+ .cse34 4294967295) 4294967296) 0) (not (< .cse35 0)) (= (mod .cse35 .cse2) 0) (not (<= (mod .cse34 4294967296) 2147483647))))))) .cse8 (< c_rangesum_~i~1 .cse36)))))))) (not (<= c_~N~0 2)) (not (< 1 c_~N~0))) is different from true [2022-11-22 00:38:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 20 refuted. 4 times theorem prover too weak. 6 trivial. 8 not checked. [2022-11-22 00:38:10,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846272876] [2022-11-22 00:38:10,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:38:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216680053] [2022-11-22 00:38:10,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216680053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:38:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1274421535] [2022-11-22 00:38:10,702 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:38:10,702 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:38:10,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:38:10,703 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:38:10,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:38:10,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:10,781 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:38:10,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:38:10,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:10,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-22 00:38:10,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:10,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 00:38:10,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:10,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:11,016 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-22 00:38:11,017 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 4 case distinctions, treesize of input 224 treesize of output 223 [2022-11-22 00:38:11,122 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:11,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:11,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 00:38:11,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-22 00:38:11,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:38:11,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:38:11,493 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:11,628 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 17 for LOIs [2022-11-22 00:38:11,709 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:38:15,698 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1241#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 1 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= ~N~0 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 1 ~N~0) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:38:15,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:38:15,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:38:15,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 34 [2022-11-22 00:38:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973326576] [2022-11-22 00:38:15,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:38:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-22 00:38:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-22 00:38:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1846, Unknown=15, NotChecked=88, Total=2162 [2022-11-22 00:38:15,702 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 34 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 00:38:18,097 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_rangesum_~cnt~0 0)) (.cse0 (<= c_~N~0 2)) (.cse2 (< 1 c_~N~0))) (and (<= c_rangesum_~i~1 0) .cse0 .cse1 .cse2 (or (let ((.cse5 (+ c_rangesum_~cnt~0 1))) (let ((.cse6 (< .cse5 0)) (.cse39 (div c_~N~0 2))) (let ((.cse3 (< .cse39 c_rangesum_~i~1)) (.cse8 (not .cse6)) (.cse11 (= .cse5 0))) (and (or (not .cse3) (and (or (and (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse4 (div v_rangesum_~ret~0_103 .cse5))) (or (<= (mod (+ .cse4 1) 4294967296) 2147483647) (<= (mod .cse4 4294967296) 2147483647)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse5) 0) (not (<= (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296) 2147483647)))) .cse6) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 .cse5) 0)) (<= (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse7 (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296))) (or (< v_rangesum_~ret~0_103 0) (= .cse7 0) (not (<= .cse7 2147483647))))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296) 2147483647)) .cse8) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse9 (div v_rangesum_~ret~0_103 .cse5))) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse5) 0) (= (mod (+ .cse9 4294967295) 4294967296) 0) (not (<= (mod .cse9 4294967296) 2147483647))))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse10 (mod (div v_rangesum_~ret~0_103 .cse5) 4294967296))) (or (not (= (mod v_rangesum_~ret~0_103 .cse5) 0)) (= .cse10 0) (not (<= .cse10 2147483647)))))) .cse11) (let ((.cse13 (+ 2 c_rangesum_~cnt~0))) (or (let ((.cse17 (< .cse13 0))) (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse12 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse14 (mod (div .cse12 .cse13) 4294967296))) (or (not (= (mod .cse12 .cse13) 0)) (= .cse14 0) (not (<= .cse14 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse15 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse15 0) (<= (mod (div .cse15 .cse13) 4294967296) 2147483647)))) (or (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse16 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (<= (mod (div .cse16 .cse13) 4294967296) 2147483647)) (not (< .cse16 0)) (= (mod .cse16 .cse13) 0)))) .cse17) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse19 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse18 (div .cse19 .cse13))) (or (not (<= (mod .cse18 4294967296) 2147483647)) (= (mod (+ .cse18 4294967295) 4294967296) 0) (not (< .cse19 0)) (= (mod .cse19 .cse13) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse20 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse21 (mod (div .cse20 .cse13) 4294967296))) (or (< .cse20 0) (= .cse21 0) (not (<= .cse21 2147483647)))))) (or (not .cse17) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse13) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse22 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (= (mod .cse22 .cse13) 0)) (<= (mod (div .cse22 .cse13) 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse23 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse13))) (or (<= (mod (+ .cse23 1) 4294967296) 2147483647) (<= (mod .cse23 4294967296) 2147483647)))))) (= .cse13 0))))) (or .cse3 (and (or (let ((.cse24 (< c_rangesum_~cnt~0 0))) (and (or .cse24 (forall ((v_rangesum_~ret~0_103 Int)) (or (not (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse25 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse25 2147483647)) (< v_rangesum_~ret~0_103 0) (= .cse25 0)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse26 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse26 2147483647)) (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (= .cse26 0)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) (not .cse24)) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse27 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (not (<= (mod .cse27 4294967296) 2147483647)) (= (mod (+ 4294967295 .cse27) 4294967296) 0) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse28 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (<= (mod (+ .cse28 1) 4294967296) 2147483647) (<= (mod .cse28 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647))))) .cse1) (or (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse29 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse29 0) (<= (mod (div .cse29 .cse5) 4294967296) 2147483647)))) (or .cse8 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse5) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse30 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse5))) (or (<= (mod (+ .cse30 1) 4294967296) 2147483647) (<= (mod .cse30 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse31 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse32 (mod (div .cse31 .cse5) 4294967296))) (or (< .cse31 0) (= .cse32 0) (not (<= .cse32 2147483647)))))) (or .cse6 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse33 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (< .cse33 0)) (= (mod .cse33 .cse5) 0) (not (<= (mod (div .cse33 .cse5) 4294967296) 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse34 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (<= (mod (div .cse34 .cse5) 4294967296) 2147483647) (not (= (mod .cse34 .cse5) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse36 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse35 (mod (div .cse36 .cse5) 4294967296))) (or (= .cse35 0) (not (= (mod .cse36 .cse5) 0)) (not (<= .cse35 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse38 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse37 (div .cse38 .cse5))) (or (= (mod (+ .cse37 4294967295) 4294967296) 0) (not (< .cse38 0)) (= (mod .cse38 .cse5) 0) (not (<= (mod .cse37 4294967296) 2147483647))))))) .cse11 (< c_rangesum_~i~1 .cse39)))))))) (not .cse0) (not .cse2)))) is different from true [2022-11-22 00:38:20,162 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse59 (div c_~N~0 2))) (let ((.cse6 (< c_rangesum_~cnt~0 0)) (.cse25 (< .cse59 c_rangesum_~i~1))) (let ((.cse11 (not (< 0 .cse59))) (.cse12 (not .cse25)) (.cse15 (+ 2 c_rangesum_~cnt~0)) (.cse10 (not .cse6)) (.cse1 (= c_rangesum_~cnt~0 0)) (.cse26 (< c_rangesum_~i~1 .cse59)) (.cse13 (+ c_rangesum_~cnt~0 1)) (.cse0 (not (<= c_~N~0 2))) (.cse2 (not (< 1 c_~N~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (let ((.cse5 (div c_rangesum_~ret~0 c_rangesum_~cnt~0))) (let ((.cse7 (mod .cse5 4294967296)) (.cse4 (= (mod c_rangesum_~ret~0 c_rangesum_~cnt~0) 0))) (let ((.cse3 (< c_rangesum_~ret~0 0)) (.cse8 (not .cse4)) (.cse9 (<= .cse7 2147483647))) (and (or (and (or (not .cse3) .cse4 (and (= (mod (+ 4294967295 .cse5) 4294967296) 0) .cse6)) (or (= .cse7 0) (and .cse3 .cse8))) (not .cse9)) (or (and .cse3 .cse10 .cse8 (<= (mod (+ .cse5 1) 4294967296) 2147483647)) .cse9))))) .cse11) (or (and (or .cse12 (and (forall ((v_rangesum_~ret~0_79 Int)) (or (<= (mod (div v_rangesum_~ret~0_79 .cse13) 4294967296) 2147483647) (< v_rangesum_~ret~0_79 0))) (forall ((v_rangesum_~ret~0_79 Int) (v_arrayElimCell_45 Int)) (let ((.cse14 (+ v_rangesum_~ret~0_79 v_arrayElimCell_45))) (or (not (<= (mod (div .cse14 .cse15) 4294967296) 2147483647)) (= (mod .cse14 .cse15) 0) (not (< .cse14 0))))) (forall ((v_rangesum_~ret~0_79 Int)) (let ((.cse16 (div v_rangesum_~ret~0_79 .cse13))) (or (<= (mod (+ .cse16 1) 4294967296) 2147483647) (<= (mod .cse16 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_79 Int) (v_arrayElimCell_45 Int)) (let ((.cse17 (+ v_rangesum_~ret~0_79 v_arrayElimCell_45))) (or (<= (mod (div .cse17 .cse15) 4294967296) 2147483647) (not (= (mod .cse17 .cse15) 0))))) (forall ((v_rangesum_~ret~0_79 Int) (v_arrayElimCell_45 Int)) (let ((.cse18 (+ v_rangesum_~ret~0_79 v_arrayElimCell_45))) (let ((.cse19 (mod (div .cse18 .cse15) 4294967296))) (or (< .cse18 0) (not (<= .cse19 2147483647)) (= .cse19 0))))) (forall ((v_rangesum_~ret~0_79 Int) (v_arrayElimCell_45 Int)) (let ((.cse20 (div (+ v_rangesum_~ret~0_79 v_arrayElimCell_45) .cse15))) (or (<= (mod .cse20 4294967296) 2147483647) (<= (mod (+ .cse20 1) 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_79 Int) (v_arrayElimCell_45 Int)) (let ((.cse22 (+ v_rangesum_~ret~0_79 v_arrayElimCell_45))) (let ((.cse21 (mod (div .cse22 .cse15) 4294967296))) (or (not (<= .cse21 2147483647)) (not (= (mod .cse22 .cse15) 0)) (= .cse21 0))))) (forall ((v_rangesum_~ret~0_79 Int)) (or (not (< v_rangesum_~ret~0_79 0)) (= (mod v_rangesum_~ret~0_79 .cse13) 0) (not (<= (mod (div v_rangesum_~ret~0_79 .cse13) 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_79 Int)) (or (not (= (mod v_rangesum_~ret~0_79 .cse13) 0)) (<= (mod (div v_rangesum_~ret~0_79 .cse13) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_79 Int)) (let ((.cse23 (mod (div v_rangesum_~ret~0_79 .cse13) 4294967296))) (or (not (= (mod v_rangesum_~ret~0_79 .cse13) 0)) (not (<= .cse23 2147483647)) (= .cse23 0)))) (forall ((v_rangesum_~ret~0_79 Int)) (let ((.cse24 (mod (div v_rangesum_~ret~0_79 .cse13) 4294967296))) (or (< v_rangesum_~ret~0_79 0) (not (<= .cse24 2147483647)) (= .cse24 0)))))) (or .cse25 (and .cse1 .cse26))) .cse11) (or (let ((.cse28 (< .cse13 0))) (let ((.cse30 (not .cse28)) (.cse33 (= .cse13 0))) (and (or .cse12 (and (or (and (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse27 (div v_rangesum_~ret~0_103 .cse13))) (or (<= (mod (+ .cse27 1) 4294967296) 2147483647) (<= (mod .cse27 4294967296) 2147483647)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse13) 0) (not (<= (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296) 2147483647)))) .cse28) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 .cse13) 0)) (<= (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse29 (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296))) (or (< v_rangesum_~ret~0_103 0) (= .cse29 0) (not (<= .cse29 2147483647))))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296) 2147483647)) .cse30) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse31 (div v_rangesum_~ret~0_103 .cse13))) (or (not (< v_rangesum_~ret~0_103 0)) (= (mod v_rangesum_~ret~0_103 .cse13) 0) (= (mod (+ .cse31 4294967295) 4294967296) 0) (not (<= (mod .cse31 4294967296) 2147483647))))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse32 (mod (div v_rangesum_~ret~0_103 .cse13) 4294967296))) (or (not (= (mod v_rangesum_~ret~0_103 .cse13) 0)) (= .cse32 0) (not (<= .cse32 2147483647)))))) .cse33) (or (let ((.cse38 (< .cse15 0))) (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse34 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse35 (mod (div .cse34 .cse15) 4294967296))) (or (not (= (mod .cse34 .cse15) 0)) (= .cse35 0) (not (<= .cse35 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse36 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse36 0) (<= (mod (div .cse36 .cse15) 4294967296) 2147483647)))) (or (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse37 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (<= (mod (div .cse37 .cse15) 4294967296) 2147483647)) (not (< .cse37 0)) (= (mod .cse37 .cse15) 0)))) .cse38) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse40 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse39 (div .cse40 .cse15))) (or (not (<= (mod .cse39 4294967296) 2147483647)) (= (mod (+ .cse39 4294967295) 4294967296) 0) (not (< .cse40 0)) (= (mod .cse40 .cse15) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse41 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse42 (mod (div .cse41 .cse15) 4294967296))) (or (< .cse41 0) (= .cse42 0) (not (<= .cse42 2147483647)))))) (or (not .cse38) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse15) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse43 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (= (mod .cse43 .cse15) 0)) (<= (mod (div .cse43 .cse15) 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse44 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse15))) (or (<= (mod (+ .cse44 1) 4294967296) 2147483647) (<= (mod .cse44 4294967296) 2147483647)))))) (= .cse15 0)))) (or .cse25 (and (or (and (or .cse6 (forall ((v_rangesum_~ret~0_103 Int)) (or (not (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse45 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse45 2147483647)) (< v_rangesum_~ret~0_103 0) (= .cse45 0)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (< v_rangesum_~ret~0_103 0) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse46 (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296))) (or (not (<= .cse46 2147483647)) (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (= .cse46 0)))) (or (forall ((v_rangesum_~ret~0_103 Int)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)) .cse10) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse47 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (not (<= (mod .cse47 4294967296) 2147483647)) (= (mod (+ 4294967295 .cse47) 4294967296) 0) (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0) (not (< v_rangesum_~ret~0_103 0))))) (forall ((v_rangesum_~ret~0_103 Int)) (let ((.cse48 (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0))) (or (<= (mod (+ .cse48 1) 4294967296) 2147483647) (<= (mod .cse48 4294967296) 2147483647)))) (forall ((v_rangesum_~ret~0_103 Int)) (or (not (= (mod v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 0)) (<= (mod (div v_rangesum_~ret~0_103 c_rangesum_~cnt~0) 4294967296) 2147483647)))) .cse1) (or (and (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse49 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (< .cse49 0) (<= (mod (div .cse49 .cse13) 4294967296) 2147483647)))) (or .cse30 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (<= (mod (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse13) 4294967296) 2147483647))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse50 (div (+ v_rangesum_~ret~0_103 v_arrayElimCell_52) .cse13))) (or (<= (mod (+ .cse50 1) 4294967296) 2147483647) (<= (mod .cse50 4294967296) 2147483647)))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse51 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse52 (mod (div .cse51 .cse13) 4294967296))) (or (< .cse51 0) (= .cse52 0) (not (<= .cse52 2147483647)))))) (or .cse28 (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse53 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (not (< .cse53 0)) (= (mod .cse53 .cse13) 0) (not (<= (mod (div .cse53 .cse13) 4294967296) 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse54 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (or (<= (mod (div .cse54 .cse13) 4294967296) 2147483647) (not (= (mod .cse54 .cse13) 0))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse56 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse55 (mod (div .cse56 .cse13) 4294967296))) (or (= .cse55 0) (not (= (mod .cse56 .cse13) 0)) (not (<= .cse55 2147483647)))))) (forall ((v_arrayElimCell_52 Int) (v_rangesum_~ret~0_103 Int)) (let ((.cse58 (+ v_rangesum_~ret~0_103 v_arrayElimCell_52))) (let ((.cse57 (div .cse58 .cse13))) (or (= (mod (+ .cse57 4294967295) 4294967296) 0) (not (< .cse58 0)) (= (mod .cse58 .cse13) 0) (not (<= (mod .cse57 4294967296) 2147483647))))))) .cse33 .cse26)))))) .cse0 .cse2))))) is different from true [2022-11-22 00:38:30,605 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 87 DAG size of output: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:38:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:34,499 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-11-22 00:38:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 00:38:34,500 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 30 [2022-11-22 00:38:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:34,503 INFO L225 Difference]: With dead ends: 40 [2022-11-22 00:38:34,503 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 00:38:34,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 313.9s TimeCoverageRelationStatistics Valid=335, Invalid=2851, Unknown=18, NotChecked=336, Total=3540 [2022-11-22 00:38:34,506 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 71 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 276 Invalid, 0 Unknown, 32 Unchecked, 1.3s Time] [2022-11-22 00:38:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 00:38:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-22 00:38:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:38:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-22 00:38:34,525 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 30 [2022-11-22 00:38:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:34,525 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-22 00:38:34,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 29 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 00:38:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-22 00:38:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-22 00:38:34,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:34,527 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:34,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:38:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:34,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:38:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 346737003, now seen corresponding path program 3 times [2022-11-22 00:38:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:34,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005426945] [2022-11-22 00:38:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:34,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:38:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945776406] [2022-11-22 00:38:34,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:38:34,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:34,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:38:34,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:38:34,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:38:34,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:38:34,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:38:34,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 00:38:34,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:38:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:38:35,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:38:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-22 00:38:35,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005426945] [2022-11-22 00:38:35,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:38:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945776406] [2022-11-22 00:38:35,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945776406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:38:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927347074] [2022-11-22 00:38:35,254 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:38:35,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:38:35,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:38:35,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:38:35,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:38:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,333 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:38:35,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:38:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-22 00:38:35,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-22 00:38:35,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,514 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-22 00:38:35,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 222 [2022-11-22 00:38:35,600 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:35,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 00:38:35,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:35,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:35,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 00:38:35,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:38:36,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:38:36,042 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:36,175 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 17 for LOIs [2022-11-22 00:38:36,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:38:38,832 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1568#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 1 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= ~N~0 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 1 ~N~0) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:38:38,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:38:38,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:38:38,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-11-22 00:38:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131375427] [2022-11-22 00:38:38,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:38:38,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:38:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:38,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:38:38,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-22 00:38:38,836 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:39,156 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-22 00:38:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:38:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 31 [2022-11-22 00:38:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:39,160 INFO L225 Difference]: With dead ends: 33 [2022-11-22 00:38:39,160 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 00:38:39,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:38:39,162 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:39,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:38:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 00:38:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-22 00:38:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:38:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-22 00:38:39,179 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 31 [2022-11-22 00:38:39,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:39,180 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-22 00:38:39,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-22 00:38:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-22 00:38:39,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:39,181 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:39,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:38:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:39,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:38:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 221279939, now seen corresponding path program 4 times [2022-11-22 00:38:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:39,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325812194] [2022-11-22 00:38:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:39,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:38:39,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593681893] [2022-11-22 00:38:39,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:38:39,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:39,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:38:39,417 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:38:39,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:38:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:39,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 00:38:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:38:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 00:38:39,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:38:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 00:38:40,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:40,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325812194] [2022-11-22 00:38:40,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:38:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593681893] [2022-11-22 00:38:40,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593681893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:38:40,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628932048] [2022-11-22 00:38:40,052 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:38:40,052 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:38:40,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:38:40,053 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:38:40,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:38:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,128 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:38:40,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 00:38:40,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-22 00:38:40,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 00:38:40,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:40,358 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-22 00:38:40,359 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 4 case distinctions, treesize of input 224 treesize of output 223 [2022-11-22 00:38:40,462 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:40,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 00:38:40,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:38:40,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 00:38:40,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:38:40,819 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-11-22 00:38:40,819 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 3 case distinctions, treesize of input 80 treesize of output 72 [2022-11-22 00:38:40,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-22 00:38:40,900 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 00:38:41,099 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 17 for LOIs [2022-11-22 00:38:41,165 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:38:44,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1875#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 1 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= ~N~0 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 1 ~N~0) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:38:44,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:38:44,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:38:44,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2022-11-22 00:38:44,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139793414] [2022-11-22 00:38:44,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:38:44,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:38:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:38:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-11-22 00:38:44,053 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:44,294 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-22 00:38:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:38:44,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2022-11-22 00:38:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:44,296 INFO L225 Difference]: With dead ends: 40 [2022-11-22 00:38:44,296 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 00:38:44,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-11-22 00:38:44,298 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:44,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:38:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 00:38:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 00:38:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 00:38:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-22 00:38:44,316 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 32 [2022-11-22 00:38:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:44,316 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-22 00:38:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-22 00:38:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 00:38:44,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:44,318 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:38:44,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:38:44,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:44,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:38:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash 795085204, now seen corresponding path program 5 times [2022-11-22 00:38:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160669772] [2022-11-22 00:38:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:44,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:38:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158964863] [2022-11-22 00:38:44,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:38:44,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:44,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:38:44,557 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:38:44,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:38:44,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-22 00:38:44,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-22 00:38:44,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:38:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:38:45,047 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:38:45,047 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:38:45,048 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 00:38:45,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:38:45,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:38:45,262 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2022-11-22 00:38:45,267 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:38:45,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:38:45 BoogieIcfgContainer [2022-11-22 00:38:45,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:38:45,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:38:45,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:38:45,313 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:38:45,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:19" (3/4) ... [2022-11-22 00:38:45,316 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 00:38:45,382 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:38:45,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:38:45,383 INFO L158 Benchmark]: Toolchain (without parser) took 386999.24ms. Allocated memory was 153.1MB in the beginning and 272.6MB in the end (delta: 119.5MB). Free memory was 109.3MB in the beginning and 151.1MB in the end (delta: -41.8MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,383 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 153.1MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:38:45,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.18ms. Allocated memory is still 153.1MB. Free memory was 108.7MB in the beginning and 98.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.16ms. Allocated memory is still 153.1MB. Free memory was 98.2MB in the beginning and 96.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,384 INFO L158 Benchmark]: Boogie Preprocessor took 40.35ms. Allocated memory is still 153.1MB. Free memory was 96.7MB in the beginning and 95.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:38:45,384 INFO L158 Benchmark]: RCFGBuilder took 445.70ms. Allocated memory is still 153.1MB. Free memory was 95.5MB in the beginning and 78.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,385 INFO L158 Benchmark]: TraceAbstraction took 386085.47ms. Allocated memory was 153.1MB in the beginning and 272.6MB in the end (delta: 119.5MB). Free memory was 78.4MB in the beginning and 155.3MB in the end (delta: -76.8MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,385 INFO L158 Benchmark]: Witness Printer took 69.13ms. Allocated memory is still 272.6MB. Free memory was 155.3MB in the beginning and 151.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 00:38:45,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 153.1MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.18ms. Allocated memory is still 153.1MB. Free memory was 108.7MB in the beginning and 98.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.16ms. Allocated memory is still 153.1MB. Free memory was 98.2MB in the beginning and 96.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.35ms. Allocated memory is still 153.1MB. Free memory was 96.7MB in the beginning and 95.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 445.70ms. Allocated memory is still 153.1MB. Free memory was 95.5MB in the beginning and 78.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 386085.47ms. Allocated memory was 153.1MB in the beginning and 272.6MB in the end (delta: 119.5MB). Free memory was 78.4MB in the beginning and 155.3MB in the end (delta: -76.8MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * Witness Printer took 69.13ms. Allocated memory is still 272.6MB. Free memory was 155.3MB in the beginning and 151.1MB 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 - CounterExampleResult [Line: 64]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int N; [L43] N = __VERIFIER_nondet_int() [L44] COND TRUE N > 1 [L45] int x[N]; [L46] CALL init_nondet(x) [L17] int i; [L18] i = 0 VAL [i=0, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=1, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=2, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=3, N=3, x={3:0}, x={3:0}] [L18] COND FALSE !(i < N) [L46] RET init_nondet(x) [L47] int temp; [L48] int ret; [L49] int ret2; [L50] int ret5; VAL [N=3, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [N=3, x={3:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N [L30] COND FALSE !(i > N/2) [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}, x[i]=22] [L29] COND TRUE i < N [L30] COND FALSE !(i > N/2) [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}, x[i]=22] [L29] COND TRUE i < N [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 [L29] i++ VAL [cnt=1, i=3, N=3, ret=2, x={3:0}, x={3:0}, x[i]=0] [L29] COND FALSE !(i < N) [L35] COND TRUE cnt !=0 [L36] return ret / cnt; [L52] RET, EXPR rangesum(x) VAL [N=3, rangesum(x)=2, x={3:0}] [L52] ret = rangesum(x) [L54] EXPR x[0] [L54] temp=x[0] [L54] EXPR x[1] [L54] x[0] = x[1] [L54] x[1] = temp VAL [N=3, ret=2, temp=1, x={3:0}] [L55] CALL, EXPR rangesum(x) VAL [N=3, x={3:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N [L30] COND FALSE !(i > N/2) [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}, x[i]=37] [L29] COND TRUE i < N [L30] COND FALSE !(i > N/2) [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}, x[i]=37] [L29] COND TRUE i < N [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 [L29] i++ VAL [cnt=1, i=3, N=3, ret=2, x={3:0}, x={3:0}, x[i]=0] [L29] COND FALSE !(i < N) [L35] COND TRUE cnt !=0 [L36] return ret / cnt; [L55] RET, EXPR rangesum(x) VAL [N=3, rangesum(x)=2, ret=2, temp=1, x={3:0}] [L55] ret2 = rangesum(x) [L56] EXPR x[0] [L56] temp=x[0] [L57] int i =0 ; VAL [i=0, N=3, ret=2, ret2=2, temp=0, x={3:0}] [L57] COND TRUE i N/2) [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}, x[i]=65] [L29] COND TRUE i < N [L30] COND FALSE !(i > N/2) [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}, x[i]=65] [L29] COND TRUE i < N [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 [L29] i++ VAL [cnt=1, i=3, N=3, ret=0, x={3:0}, x={3:0}, x[i]=0] [L29] COND FALSE !(i < N) [L35] COND TRUE cnt !=0 [L36] return ret / cnt; [L61] RET, EXPR rangesum(x) VAL [i=2, N=3, rangesum(x)=0, ret=2, ret2=2, temp=0, x={3:0}] [L61] ret5 = rangesum(x) [L63] COND TRUE ret != ret2 || ret !=ret5 VAL [i=2, N=3, ret=2, ret2=2, ret5=0, temp=0, x={3:0}] [L64] reach_error() VAL [i=2, N=3, ret=2, ret2=2, ret5=0, temp=0, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 386.0s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 19.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 32 IncrementalHoareTripleChecker+Unchecked, 178 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 568 IncrementalHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 91 mSDtfsCounter, 568 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 552 GetRequests, 380 SyntacticMatches, 15 SemanticMatches, 157 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 322.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=8, InterpolantAutomatonStates: 66, 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 344.4s InterpolantComputationTime, 270 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 367 ConstructedInterpolants, 2 QuantifiedInterpolants, 3221 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1333 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 332/439 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: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 3, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 31, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, 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: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 192, DAG_COMPRESSION_RETAINED_NODES: 47, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-22 00:38:45,602 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-22 00:38:45,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b522777-319b-47cd-9b77-2a3b4623dd6d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE