./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ss1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW --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 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 --- 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-4e7fbc6 [2022-11-23 14:11:04,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:11:04,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:11:04,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:11:04,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:11:04,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:11:04,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:11:04,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:11:04,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:11:04,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:11:04,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:11:04,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:11:04,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:11:04,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:11:04,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:11:04,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:11:04,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:11:04,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:11:04,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:11:04,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:11:04,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:11:04,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:11:04,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:11:04,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:11:04,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:11:04,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:11:04,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:11:04,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:11:04,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:11:04,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:11:04,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:11:04,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:11:04,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:11:04,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:11:04,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:11:04,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:11:04,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:11:04,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:11:04,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:11:04,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:11:04,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:11:04,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:11:04,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:11:04,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:11:04,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:11:04,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:11:04,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:11:04,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:11:04,801 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:11:04,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:11:04,801 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:11:04,801 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:11:04,802 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:11:04,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:11:04,802 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:11:04,802 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:11:04,802 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:11:04,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:11:04,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:11:04,803 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:11:04,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:11:04,804 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:11:04,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:11:04,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:11:04,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:11:04,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:11:04,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:11:04,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:11:04,805 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:11:04,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:11:04,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:11:04,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:11:04,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:11:04,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:11:04,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:04,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:11:04,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:11:04,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:11:04,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:11:04,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:11:04,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:11:04,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:11:04,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:11:04,815 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_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 [2022-11-23 14:11:05,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:11:05,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:11:05,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:11:05,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:11:05,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:11:05,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-fpi/ss1.c [2022-11-23 14:11:08,266 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:11:08,482 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:11:08,483 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/sv-benchmarks/c/array-fpi/ss1.c [2022-11-23 14:11:08,490 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/data/c4366f92d/90d87b4eb1154283b02cbfdc085d7f9e/FLAG22fcc21b2 [2022-11-23 14:11:08,509 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/data/c4366f92d/90d87b4eb1154283b02cbfdc085d7f9e [2022-11-23 14:11:08,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:11:08,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:11:08,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:08,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:11:08,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:11:08,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b266c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08, skipping insertion in model container [2022-11-23 14:11:08,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:11:08,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:11:08,733 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_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/sv-benchmarks/c/array-fpi/ss1.c[586,599] [2022-11-23 14:11:08,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:08,793 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:11:08,809 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_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/sv-benchmarks/c/array-fpi/ss1.c[586,599] [2022-11-23 14:11:08,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:08,839 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:11:08,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08 WrapperNode [2022-11-23 14:11:08,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:08,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:08,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:11:08,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:11:08,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,900 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2022-11-23 14:11:08,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:08,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:11:08,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:11:08,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:11:08,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:11:08,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:11:08,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:11:08,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:11:08,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (1/1) ... [2022-11-23 14:11:08,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:09,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:11:09,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:11:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:11:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:11:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:11:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:11:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:11:09,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:11:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:11:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:11:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:11:09,167 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:11:09,170 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:11:09,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:11:09,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:11:09,432 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:11:09,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:09 BoogieIcfgContainer [2022-11-23 14:11:09,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:11:09,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:11:09,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:11:09,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:11:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:08" (1/3) ... [2022-11-23 14:11:09,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567d408f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:09, skipping insertion in model container [2022-11-23 14:11:09,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:08" (2/3) ... [2022-11-23 14:11:09,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567d408f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:09, skipping insertion in model container [2022-11-23 14:11:09,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:09" (3/3) ... [2022-11-23 14:11:09,470 INFO L112 eAbstractionObserver]: Analyzing ICFG ss1.c [2022-11-23 14:11:09,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:11:09,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:11:09,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:11:09,607 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;@4a75b1f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:11:09,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:11:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:11:09,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:09,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:09,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 581057961, now seen corresponding path program 1 times [2022-11-23 14:11:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:09,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884941549] [2022-11-23 14:11:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:09,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:09,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884941549] [2022-11-23 14:11:09,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 14:11:09,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911899995] [2022-11-23 14:11:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:09,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:09,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:11:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:10,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:11:10,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:10,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:11:10,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911899995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:10,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:10,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283659237] [2022-11-23 14:11:10,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:10,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:10,187 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:10,236 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2022-11-23 14:11:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:11:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:10,248 INFO L225 Difference]: With dead ends: 22 [2022-11-23 14:11:10,248 INFO L226 Difference]: Without dead ends: 10 [2022-11-23 14:11:10,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:10,255 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:10,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:11:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-23 14:11:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-23 14:11:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-11-23 14:11:10,291 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 8 [2022-11-23 14:11:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:10,291 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-23 14:11:10,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2022-11-23 14:11:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:11:10,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:10,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:10,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 14:11:10,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 431603023, now seen corresponding path program 1 times [2022-11-23 14:11:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:10,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235665244] [2022-11-23 14:11:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:10,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:10,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514635668] [2022-11-23 14:11:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:10,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:10,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:10,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:11:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:10,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:11:10,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:11:10,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:11:10,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:10,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235665244] [2022-11-23 14:11:10,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:10,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514635668] [2022-11-23 14:11:10,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514635668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:10,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:10,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:11:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105905465] [2022-11-23 14:11:10,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:11:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:11:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:11:10,714 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:10,781 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2022-11-23 14:11:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:11:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:11:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:10,784 INFO L225 Difference]: With dead ends: 18 [2022-11-23 14:11:10,784 INFO L226 Difference]: Without dead ends: 13 [2022-11-23 14:11:10,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:11:10,786 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:10,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:11:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-23 14:11:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-23 14:11:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-23 14:11:10,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2022-11-23 14:11:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-23 14:11:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-23 14:11:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:11:10,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:10,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:10,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:11,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 792964949, now seen corresponding path program 1 times [2022-11-23 14:11:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:11,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881506349] [2022-11-23 14:11:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:11,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:11,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574750750] [2022-11-23 14:11:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:11,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:11,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:11,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:11:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:11,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 14:11:11,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:11,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-23 14:11:11,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:11:11,362 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 19 treesize of output 18 [2022-11-23 14:11:11,535 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 36 treesize of output 23 [2022-11-23 14:11:11,667 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 36 treesize of output 23 [2022-11-23 14:11:11,809 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 42 treesize of output 25 [2022-11-23 14:11:11,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 51 treesize of output 35 [2022-11-23 14:11:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:11,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:12,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:12,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881506349] [2022-11-23 14:11:12,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574750750] [2022-11-23 14:11:12,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574750750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [196043641] [2022-11-23 14:11:12,535 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:12,536 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:12,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:12,547 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:12,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:12,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,641 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:11:12,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:11:12,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,771 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:12,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:11:12,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:12,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:11:13,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:13,137 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:11:13,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:11:13,292 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 [2022-11-23 14:11:13,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:13,372 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:13,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:13,474 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:13,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:13,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:13,561 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:13,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:11:13,655 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:13,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:13,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:13,748 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:13,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:13,842 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:13,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:13,886 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:14,465 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '249#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:14,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:14,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:14,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-23 14:11:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351306496] [2022-11-23 14:11:14,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:14,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:11:14,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:11:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:11:14,469 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:15,114 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2022-11-23 14:11:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:11:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 14:11:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:15,116 INFO L225 Difference]: With dead ends: 27 [2022-11-23 14:11:15,116 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:11:15,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:11:15,118 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:15,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:11:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:11:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-23 14:11:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-23 14:11:15,126 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12 [2022-11-23 14:11:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:15,126 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-23 14:11:15,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-23 14:11:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:11:15,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:15,127 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:15,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 14:11:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:15,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:15,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash -911807493, now seen corresponding path program 2 times [2022-11-23 14:11:15,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:15,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098179769] [2022-11-23 14:11:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:15,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:15,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063683875] [2022-11-23 14:11:15,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:11:15,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:15,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:15,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:15,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:11:15,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:11:15,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:11:15,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:11:15,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:11:15,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:11:15,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098179769] [2022-11-23 14:11:15,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063683875] [2022-11-23 14:11:15,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063683875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509750015] [2022-11-23 14:11:15,598 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:15,600 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:15,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:15,602 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:15,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:15,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,708 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:11:15,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:11:15,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,815 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:15,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-23 14:11:15,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:15,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:11:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:16,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:16,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:16,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:16,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:16,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:16,116 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:11:16,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:11:16,240 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 [2022-11-23 14:11:16,277 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:16,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:16,348 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:16,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:16,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:16,425 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:16,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:16,498 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:16,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:16,542 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:16,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:16,626 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:16,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:16,660 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:17,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:17,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:17,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:17,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 14:11:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498992186] [2022-11-23 14:11:17,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:17,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:11:17,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:11:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:11:17,087 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:17,237 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2022-11-23 14:11:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:11:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 14:11:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:17,239 INFO L225 Difference]: With dead ends: 31 [2022-11-23 14:11:17,239 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 14:11:17,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:11:17,240 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:17,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:11:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 14:11:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-11-23 14:11:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-23 14:11:17,249 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2022-11-23 14:11:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:17,250 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-23 14:11:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-23 14:11:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:11:17,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:17,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:17,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:17,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:17,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1188195942, now seen corresponding path program 3 times [2022-11-23 14:11:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724768938] [2022-11-23 14:11:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:17,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:17,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:17,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982722472] [2022-11-23 14:11:17,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:11:17,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:17,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:17,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:17,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:11:17,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:11:17,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:11:17,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:11:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:11:17,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:11:17,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724768938] [2022-11-23 14:11:17,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982722472] [2022-11-23 14:11:17,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982722472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [231461871] [2022-11-23 14:11:17,644 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:17,645 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:17,645 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:17,645 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:17,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,770 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:17,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:11:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-23 14:11:17,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:11:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:17,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:18,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:18,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:18,053 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:11:18,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:11:18,155 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 [2022-11-23 14:11:18,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:18,216 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:18,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:18,287 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:18,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:18,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:18,353 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:18,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:11:18,426 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:18,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:18,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:18,491 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:18,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:18,562 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:18,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:18,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:18,990 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '602#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:18,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:18,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:18,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 14:11:18,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186389701] [2022-11-23 14:11:18,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:11:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:11:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:11:18,992 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:19,082 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-11-23 14:11:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:11:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 14:11:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:19,083 INFO L225 Difference]: With dead ends: 33 [2022-11-23 14:11:19,084 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:11:19,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:11:19,085 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:19,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:11:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:11:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-23 14:11:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-23 14:11:19,091 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2022-11-23 14:11:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:19,091 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-23 14:11:19,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-23 14:11:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:11:19,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:19,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:19,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:19,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:19,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1993429225, now seen corresponding path program 4 times [2022-11-23 14:11:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126038111] [2022-11-23 14:11:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:19,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:19,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780046081] [2022-11-23 14:11:19,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:11:19,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:19,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:19,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:19,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:11:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:19,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-23 14:11:19,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:19,434 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 11 treesize of output 7 [2022-11-23 14:11:19,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-23 14:11:19,460 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 23 [2022-11-23 14:11:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,499 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 28 treesize of output 30 [2022-11-23 14:11:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,580 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 0 case distinctions, treesize of input 45 treesize of output 35 [2022-11-23 14:11:19,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,624 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 0 case distinctions, treesize of input 47 treesize of output 35 [2022-11-23 14:11:19,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 40 [2022-11-23 14:11:19,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,789 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 0 case distinctions, treesize of input 55 treesize of output 37 [2022-11-23 14:11:19,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:19,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2022-11-23 14:11:19,947 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 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-23 14:11:20,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2022-11-23 14:11:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:20,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:32,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:32,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126038111] [2022-11-23 14:11:32,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780046081] [2022-11-23 14:11:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780046081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711238446] [2022-11-23 14:11:32,787 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:32,787 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:32,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:32,788 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:32,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:32,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:32,884 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:11:32,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:11:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:32,920 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:11:32,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:11:32,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:32,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:32,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,033 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:33,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:33,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:11:33,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:33,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:33,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:33,261 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:11:33,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:11:33,443 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 [2022-11-23 14:11:33,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:33,481 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:33,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:33,551 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:33,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:33,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:33,615 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:33,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:33,682 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:33,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:33,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:33,734 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:33,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:33,803 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:33,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:33,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:35,241 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '815#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:35,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:35,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:35,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-23 14:11:35,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597350788] [2022-11-23 14:11:35,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 14:11:35,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 14:11:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2022-11-23 14:11:35,246 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:45,662 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-23 14:11:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:11:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 14:11:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:45,663 INFO L225 Difference]: With dead ends: 36 [2022-11-23 14:11:45,664 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 14:11:45,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:11:45,665 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:45,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 14:11:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 14:11:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-11-23 14:11:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-23 14:11:45,676 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2022-11-23 14:11:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:45,676 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-23 14:11:45,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-23 14:11:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:11:45,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:45,677 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:45,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:45,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:45,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2119813775, now seen corresponding path program 5 times [2022-11-23 14:11:45,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:45,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815381289] [2022-11-23 14:11:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:45,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:45,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941225553] [2022-11-23 14:11:45,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:11:45,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:45,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:45,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:45,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:11:46,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:11:46,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:11:46,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:11:46,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:11:46,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:11:46,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:46,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815381289] [2022-11-23 14:11:46,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:46,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941225553] [2022-11-23 14:11:46,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941225553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:46,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577724895] [2022-11-23 14:11:46,164 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:46,164 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:46,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:46,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:46,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:46,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,249 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:11:46,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:11:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,290 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:11:46,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:11:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,408 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:46,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:46,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:11:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:46,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:46,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:46,638 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:11:46,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:11:46,789 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 [2022-11-23 14:11:46,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:46,828 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:46,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:46,898 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:46,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:46,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:46,969 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:46,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:11:47,044 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:47,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:47,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:47,105 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:11:47,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:11:47,185 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:47,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:47,211 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:47,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1045#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:47,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:47,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:47,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-23 14:11:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325048172] [2022-11-23 14:11:47,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:47,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:11:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:11:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:11:47,707 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:47,899 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-11-23 14:11:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:11:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 14:11:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:47,904 INFO L225 Difference]: With dead ends: 41 [2022-11-23 14:11:47,904 INFO L226 Difference]: Without dead ends: 32 [2022-11-23 14:11:47,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 13 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:11:47,905 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:47,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:11:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-23 14:11:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-11-23 14:11:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-23 14:11:47,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-11-23 14:11:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:47,935 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-23 14:11:47,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-23 14:11:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:11:47,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:47,936 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:47,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:48,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1666458246, now seen corresponding path program 6 times [2022-11-23 14:11:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:48,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255171465] [2022-11-23 14:11:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:48,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:48,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487232149] [2022-11-23 14:11:48,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:11:48,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:48,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:48,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:48,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:11:48,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:11:48,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:11:48,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:11:48,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:11:48,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:11:48,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255171465] [2022-11-23 14:11:48,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487232149] [2022-11-23 14:11:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487232149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:11:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [372355324] [2022-11-23 14:11:48,413 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:11:48,413 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:11:48,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:11:48,413 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:11:48,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,457 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:11:48,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:11:48,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,551 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:11:48,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:11:48,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,665 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:11:48,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:11:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:11:48,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:48,892 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:11:48,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:11:48,992 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 [2022-11-23 14:11:49,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:49,043 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:49,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:49,126 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:49,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:49,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:49,200 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:49,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:49,267 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:11:49,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:11:49,307 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:11:49,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:11:49,372 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:11:49,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:11:49,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:11:49,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1290#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:11:49,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:11:49,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:11:49,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-23 14:11:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410014129] [2022-11-23 14:11:49,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:11:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:11:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:11:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:11:49,798 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:49,940 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-11-23 14:11:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:11:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 14:11:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:49,941 INFO L225 Difference]: With dead ends: 42 [2022-11-23 14:11:49,941 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:11:49,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:11:49,943 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:49,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 6 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:11:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:11:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 14:11:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-23 14:11:49,951 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2022-11-23 14:11:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:49,952 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-23 14:11:49,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-23 14:11:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:11:49,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:49,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:49,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:50,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:50,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash -72472683, now seen corresponding path program 7 times [2022-11-23 14:11:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358124794] [2022-11-23 14:11:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:50,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578670084] [2022-11-23 14:11:50,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:11:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:50,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:50,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:11:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:50,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-23 14:11:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:50,372 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 11 treesize of output 7 [2022-11-23 14:11:50,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-23 14:11:50,398 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 23 [2022-11-23 14:11:50,428 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 36 treesize of output 38 [2022-11-23 14:11:50,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,476 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:11:50,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:50,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2022-11-23 14:11:50,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:50,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2022-11-23 14:11:50,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,725 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 0 case distinctions, treesize of input 76 treesize of output 51 [2022-11-23 14:11:50,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,848 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 0 case distinctions, treesize of input 60 treesize of output 49 [2022-11-23 14:11:50,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:50,922 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 0 case distinctions, treesize of input 66 treesize of output 51 [2022-11-23 14:11:51,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,007 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 0 case distinctions, treesize of input 58 treesize of output 47 [2022-11-23 14:11:51,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:11:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2022-11-23 14:11:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:11:51,234 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 0 case distinctions, treesize of input 56 treesize of output 47 [2022-11-23 14:11:51,312 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 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-23 14:11:51,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 43 [2022-11-23 14:11:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:51,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:12:33,461 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0)) (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) (let ((.cse17 (let ((.cse18 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10)) (.cse9 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse11 (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse8))))) (let ((.cse13 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse7 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (store .cse11 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse12 (let ((.cse14 (store .cse13 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse1 .cse2 .cse3 .cse7 .cse8)))) (store .cse14 .cse10 (+ (select .cse13 .cse10) (select (select (store .cse11 |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse12 .cse9 (+ (select (select (store .cse11 |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse13 .cse9))))))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse6 .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (+ .cse0 .cse1 .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse6 .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9) .cse6 .cse7 .cse8))))))))))))))))) is different from false [2022-11-23 14:13:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 14:13:04,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358124794] [2022-11-23 14:13:04,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:13:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578670084] [2022-11-23 14:13:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578670084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175224031] [2022-11-23 14:13:04,628 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:13:04,628 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:04,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:04,629 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:04,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:13:04,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,723 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:13:04,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:13:04,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,811 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:13:04,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:13:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-23 14:13:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:13:04,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:04,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:04,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:05,053 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:13:05,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:13:05,141 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 [2022-11-23 14:13:05,182 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:05,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:13:05,246 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:05,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:05,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:05,321 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:05,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:13:05,392 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:13:05,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:13:05,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:05,437 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:13:05,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:13:05,498 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:05,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:05,519 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:13:08,441 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1563#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:13:08,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:13:08,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:13:08,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-23 14:13:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470405027] [2022-11-23 14:13:08,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:13:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 14:13:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 14:13:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1360, Unknown=11, NotChecked=74, Total=1560 [2022-11-23 14:13:08,444 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:33,018 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 123 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:41,005 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-23 14:13:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:13:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-23 14:13:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:41,006 INFO L225 Difference]: With dead ends: 45 [2022-11-23 14:13:41,007 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 14:13:41,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 97.7s TimeCoverageRelationStatistics Valid=156, Invalid=1816, Unknown=12, NotChecked=86, Total=2070 [2022-11-23 14:13:41,008 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:41,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 461 Invalid, 0 Unknown, 22 Unchecked, 9.7s Time] [2022-11-23 14:13:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 14:13:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-11-23 14:13:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-23 14:13:41,024 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2022-11-23 14:13:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:41,024 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-23 14:13:41,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-23 14:13:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:13:41,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:41,025 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:41,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 14:13:41,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1317708229, now seen corresponding path program 8 times [2022-11-23 14:13:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283994251] [2022-11-23 14:13:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:41,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:13:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633249896] [2022-11-23 14:13:41,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:13:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:41,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:41,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:13:41,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:13:41,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:13:41,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:13:41,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:13:41,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:13:41,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:41,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283994251] [2022-11-23 14:13:41,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:13:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633249896] [2022-11-23 14:13:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633249896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894098230] [2022-11-23 14:13:41,577 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:13:41,577 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:41,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:41,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:41,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:13:41,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,632 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:13:41,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:13:41,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,738 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:13:41,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:13:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:13:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:13:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:41,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:41,960 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:13:41,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:13:42,048 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 [2022-11-23 14:13:42,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:42,115 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:42,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:13:42,200 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:42,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:42,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:42,267 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:42,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:13:42,346 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:13:42,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:13:42,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:42,412 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:13:42,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:13:42,491 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:42,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:42,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:13:42,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1853#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:13:42,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:13:42,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:13:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-23 14:13:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282175388] [2022-11-23 14:13:42,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:13:42,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:13:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:13:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:13:42,904 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:43,219 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-11-23 14:13:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:13:43,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-23 14:13:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:43,220 INFO L225 Difference]: With dead ends: 51 [2022-11-23 14:13:43,220 INFO L226 Difference]: Without dead ends: 40 [2022-11-23 14:13:43,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:13:43,223 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:43,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:13:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-23 14:13:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-23 14:13:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-23 14:13:43,243 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2022-11-23 14:13:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:43,243 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-23 14:13:43,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-23 14:13:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:13:43,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:43,244 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:43,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:43,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2048008538, now seen corresponding path program 9 times [2022-11-23 14:13:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518214142] [2022-11-23 14:13:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:43,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:13:43,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45071374] [2022-11-23 14:13:43,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:13:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:43,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:13:43,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:13:43,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:13:43,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:13:43,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:13:43,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:13:43,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518214142] [2022-11-23 14:13:43,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:13:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45071374] [2022-11-23 14:13:43,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45071374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847342913] [2022-11-23 14:13:43,745 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:13:43,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:43,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:43,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:43,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:13:43,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,786 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:13:43,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:13:43,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,875 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-23 14:13:43,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-23 14:13:43,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:43,979 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:13:43,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:13:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:13:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:44,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:44,205 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:13:44,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:13:44,286 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 [2022-11-23 14:13:44,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:44,349 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:13:44,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:13:44,422 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:44,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:44,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:44,482 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:44,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:13:44,565 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:13:44,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:13:44,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:44,645 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:13:44,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:13:44,726 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:13:44,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:13:44,754 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:13:45,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2159#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:13:45,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:13:45,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:13:45,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-23 14:13:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715371448] [2022-11-23 14:13:45,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:13:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:13:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:13:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:13:45,177 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:45,361 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-11-23 14:13:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:13:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-23 14:13:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:45,370 INFO L225 Difference]: With dead ends: 51 [2022-11-23 14:13:45,370 INFO L226 Difference]: Without dead ends: 25 [2022-11-23 14:13:45,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:13:45,371 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:45,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:13:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-23 14:13:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-23 14:13:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-23 14:13:45,384 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 21 [2022-11-23 14:13:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:45,384 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-23 14:13:45,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:13:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-23 14:13:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 14:13:45,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:45,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:45,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:45,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:45,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 992060457, now seen corresponding path program 10 times [2022-11-23 14:13:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586532474] [2022-11-23 14:13:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:45,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:13:45,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969784205] [2022-11-23 14:13:45,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:13:45,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:45,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:13:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:45,747 WARN L261 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-23 14:13:45,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:45,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-23 14:13:45,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:45,793 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 23 [2022-11-23 14:13:45,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,826 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 28 treesize of output 30 [2022-11-23 14:13:45,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,869 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 0 case distinctions, treesize of input 40 treesize of output 45 [2022-11-23 14:13:45,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:45,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-23 14:13:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2022-11-23 14:13:46,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2022-11-23 14:13:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2022-11-23 14:13:46,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2022-11-23 14:13:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 69 [2022-11-23 14:13:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2022-11-23 14:13:46,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 66 [2022-11-23 14:13:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 63 [2022-11-23 14:13:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 70 [2022-11-23 14:13:47,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:47,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 75 [2022-11-23 14:13:47,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 74 [2022-11-23 14:13:47,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 64 [2022-11-23 14:13:47,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 51 [2022-11-23 14:13:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:47,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:18:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:18:18,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586532474] [2022-11-23 14:18:18,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:18:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969784205] [2022-11-23 14:18:18,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969784205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:18:18,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094172641] [2022-11-23 14:18:18,815 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:18:18,815 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:18:18,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:18:18,816 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:18:18,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:18:18,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,852 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:18:18,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 92 [2022-11-23 14:18:18,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,954 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:18:18,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:18:18,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:18,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:18:19,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:18:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:18:19,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:18:19,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:18:19,200 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:18:19,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:18:19,346 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 [2022-11-23 14:18:19,386 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:18:19,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:18:19,450 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:18:19,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:18:19,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:18:19,516 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:18:19,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:18:19,582 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:18:19,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:18:19,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:18:19,646 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:18:19,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:18:19,721 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:18:19,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:18:19,750 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:18:29,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2492#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:18:29,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:18:29,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:18:29,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2022-11-23 14:18:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138130868] [2022-11-23 14:18:29,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:18:29,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-23 14:18:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-23 14:18:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2056, Unknown=58, NotChecked=0, Total=2256 [2022-11-23 14:18:29,076 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 44 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:13,381 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 144 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:19:15,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:19:17,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:19:20,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:19:22,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:19:24,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:19:27,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:19:29,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:19:31,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:19:34,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:20:53,985 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 181 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:20:57,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 14:22:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:14,965 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-11-23 14:22:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 14:22:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-23 14:22:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:14,966 INFO L225 Difference]: With dead ends: 54 [2022-11-23 14:22:14,966 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 14:22:14,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 446.4s TimeCoverageRelationStatistics Valid=195, Invalid=2684, Unknown=91, NotChecked=0, Total=2970 [2022-11-23 14:22:14,968 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:14,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 803 Invalid, 7 Unknown, 0 Unchecked, 49.5s Time] [2022-11-23 14:22:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 14:22:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-11-23 14:22:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-23 14:22:14,986 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 24 [2022-11-23 14:22:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:14,986 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-23 14:22:14,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-23 14:22:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:22:14,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:14,988 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:14,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:15,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:22:15,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1216276529, now seen corresponding path program 11 times [2022-11-23 14:22:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:15,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63122406] [2022-11-23 14:22:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:15,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:22:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530546559] [2022-11-23 14:22:15,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:22:15,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:15,224 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:15,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 14:22:15,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 14:22:15,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:15,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:22:15,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:15,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:15,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63122406] [2022-11-23 14:22:15,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:22:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530546559] [2022-11-23 14:22:15,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530546559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [17094573] [2022-11-23 14:22:15,793 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:22:15,793 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:15,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:15,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:15,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,898 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:22:15,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:22:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:22:15,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-23 14:22:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:15,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-23 14:22:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:16,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:16,151 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-23 14:22:16,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 420 treesize of output 410 [2022-11-23 14:22:16,229 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 [2022-11-23 14:22:16,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:16,292 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:22:16,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:22:16,383 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:22:16,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:22:16,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:16,460 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:22:16,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:22:16,555 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:22:16,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:22:16,605 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:22:16,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-23 14:22:16,680 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:22:16,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:22:16,703 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:17,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2840#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:22:17,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:17,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:22:17,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-23 14:22:17,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51286013] [2022-11-23 14:22:17,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:17,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:22:17,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:17,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:22:17,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:22:17,162 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:17,645 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-11-23 14:22:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:22:17,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-23 14:22:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:17,647 INFO L225 Difference]: With dead ends: 61 [2022-11-23 14:22:17,647 INFO L226 Difference]: Without dead ends: 48 [2022-11-23 14:22:17,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2022-11-23 14:22:17,648 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:17,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 16 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:22:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-23 14:22:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2022-11-23 14:22:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-11-23 14:22:17,676 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 25 [2022-11-23 14:22:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:17,676 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-11-23 14:22:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-11-23 14:22:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:22:17,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:17,678 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:17,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:17,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:17,894 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 688797510, now seen corresponding path program 12 times [2022-11-23 14:22:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317460086] [2022-11-23 14:22:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:17,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:22:17,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692786348] [2022-11-23 14:22:17,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:22:17,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:17,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:17,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 14:22:18,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:22:18,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:22:18,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:22:18,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:18,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:18,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317460086] [2022-11-23 14:22:18,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:22:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692786348] [2022-11-23 14:22:18,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692786348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:18,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730174065] [2022-11-23 14:22:18,345 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 14:22:18,345 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:18,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:18,345 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:18,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,446 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-23 14:22:18,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-23 14:22:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-23 14:22:18,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-23 14:22:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-23 14:22:18,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:18,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:18,657 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-23 14:22:18,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 415 treesize of output 411 [2022-11-23 14:22:18,808 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 [2022-11-23 14:22:18,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:18,854 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:22:18,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:22:18,923 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:22:18,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:22:18,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:18,985 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 14:22:18,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-23 14:22:19,060 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-23 14:22:19,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-23 14:22:19,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:19,129 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-23 14:22:19,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:22:19,228 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-23 14:22:19,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-23 14:22:19,257 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:20,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3207#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem16#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-23 14:22:20,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:22:20,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:22:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-23 14:22:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530490808] [2022-11-23 14:22:20,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:22:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:22:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:20,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:22:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:22:20,172 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:20,404 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-11-23 14:22:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:22:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-23 14:22:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:20,405 INFO L225 Difference]: With dead ends: 60 [2022-11-23 14:22:20,405 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 14:22:20,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 22 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:22:20,407 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 14:22:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-23 14:22:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-23 14:22:20,429 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2022-11-23 14:22:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:20,430 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-23 14:22:20,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-23 14:22:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:22:20,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:20,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:20,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 14:22:20,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1689346091, now seen corresponding path program 13 times [2022-11-23 14:22:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431673572] [2022-11-23 14:22:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:20,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:22:20,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385577877] [2022-11-23 14:22:20,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:22:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:20,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:20,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9eb42f2-33b1-4e0b-bcb3-80f76bdf9244/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 14:22:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:20,839 WARN L261 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-23 14:22:20,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:20,870 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 11 treesize of output 7 [2022-11-23 14:22:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,899 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 19 treesize of output 18 [2022-11-23 14:22:20,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,937 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 28 treesize of output 30 [2022-11-23 14:22:20,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:20,991 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 0 case distinctions, treesize of input 40 treesize of output 45 [2022-11-23 14:22:21,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-23 14:22:21,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-11-23 14:22:21,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 76 [2022-11-23 14:22:21,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:21,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 79 [2022-11-23 14:22:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 84 [2022-11-23 14:22:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 76 [2022-11-23 14:22:21,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 76 [2022-11-23 14:22:21,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:21,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 76 [2022-11-23 14:22:22,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 75 [2022-11-23 14:22:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:22,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 78 [2022-11-23 14:22:22,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 73 [2022-11-23 14:22:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 75 [2022-11-23 14:22:22,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:22,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 76 [2022-11-23 14:22:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 73 [2022-11-23 14:22:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:22,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 73 [2022-11-23 14:22:23,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 73 [2022-11-23 14:22:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 66 [2022-11-23 14:22:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 50 [2022-11-23 14:22:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:23,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:25:14,332 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) (let ((.cse25 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse12 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)) (.cse15 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse6 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24))) (let ((.cse11 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5 .cse6 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14)) (.cse13 (+ 32 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5 .cse6 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse17 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5 .cse6 .cse8 .cse11 .cse12))))) (let ((.cse19 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (let ((.cse20 (let ((.cse21 (let ((.cse22 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse0 .cse1 .cse5 .cse6 .cse8 .cse11 .cse12)))) (store .cse22 .cse16 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse16)))))) (store .cse21 .cse15 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse15)))))) (store .cse20 .cse14 (+ (select .cse19 .cse14) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse18 .cse13 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse13))))))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse9 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse5 .cse6 .cse7 .cse8 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse5 .cse6 .cse7 .cse8 .cse9 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse10 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (+ .cse0 .cse1 .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))))))))))))))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0)))) is different from false [2022-11-23 14:25:18,231 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (= (let ((.cse25 (let ((.cse26 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)) (.cse15 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24))) (let ((.cse9 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14)) (.cse13 (+ 32 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse11 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse8 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse17 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse8 .cse9 .cse11))))) (let ((.cse19 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse10 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (let ((.cse20 (let ((.cse21 (let ((.cse22 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse2 .cse3 .cse4 .cse8 .cse9 .cse10 .cse11)))) (store .cse22 .cse16 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse16)))))) (store .cse21 .cse15 (+ (select .cse19 .cse15) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse20 .cse14 (+ (select .cse19 .cse14) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse18 .cse13 (+ (select .cse19 .cse13) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3 .cse4 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse7 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (+ .cse0 .cse1 .cse2 .cse3 .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12)))))))))))))))))) (+ (* 2 ~N~0) (* ~N~0 ~N~0))) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0)))) is different from false [2022-11-23 14:25:23,597 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) (let ((.cse25 (let ((.cse26 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse5 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)) (.cse15 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24))) (let ((.cse8 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse9 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14)) (.cse13 (+ 32 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse8 .cse9 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse17 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse5 .cse8 .cse9 .cse12))))) (let ((.cse19 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse10 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (let ((.cse20 (let ((.cse21 (let ((.cse22 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse0 .cse3 .cse5 .cse8 .cse9 .cse10 .cse12)))) (store .cse22 .cse16 (+ (select .cse19 .cse16) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse21 .cse15 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse15)))))) (store .cse20 .cse14 (+ (select .cse19 .cse14) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse18 .cse13 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse13))))))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse4 .cse5 .cse8 .cse9 .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse11 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3 .cse4 .cse5 .cse8 .cse9 .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3 .cse4 .cse5 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13) .cse8 .cse9 .cse10 .cse11 .cse12))))))))))))))))))) (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)))) is different from false [2022-11-23 14:25:30,554 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) ~N~0) (not (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)) (= (+ (* 2 ~N~0) (* ~N~0 ~N~0)) (let ((.cse25 (let ((.cse26 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset| 24) 1)))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)) (.cse15 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24))) (let ((.cse6 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14)) (.cse13 (+ 32 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse6 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse17 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse5 .cse6 .cse8))))) (let ((.cse19 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse7 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse10 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (let ((.cse20 (let ((.cse21 (let ((.cse22 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8)))) (store .cse22 .cse16 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse16)))))) (store .cse21 .cse15 (+ (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 .cse15)))))) (store .cse20 .cse14 (+ (select .cse19 .cse14) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse18 .cse13 (+ (select .cse19 .cse13) (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse12 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse0 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13) .cse12))))))))))))))))))))) is different from false