./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI --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 7bfa83e4265de8b9a1bd21dc33b28b63f68994b9952943e0726905cc1e10334a --- 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-5e519f3 [2022-11-03 02:26:34,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:26:34,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:26:34,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:26:34,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:26:34,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:26:34,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:26:34,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:26:34,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:26:34,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:26:34,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:26:34,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:26:34,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:26:34,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:26:34,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:26:34,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:26:34,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:26:34,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:26:34,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:26:34,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:26:34,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:26:34,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:26:34,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:26:34,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:26:34,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:26:34,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:26:34,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:26:34,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:26:34,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:26:34,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:26:34,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:26:34,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:26:34,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:26:34,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:26:34,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:26:34,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:26:34,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:26:34,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:26:34,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:26:34,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:26:34,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:26:34,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:26:34,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:26:34,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:26:34,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:26:34,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:26:34,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:26:34,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:26:34,404 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:26:34,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:26:34,404 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:26:34,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:26:34,405 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:26:34,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:26:34,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:26:34,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:26:34,406 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:26:34,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:26:34,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:26:34,407 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:26:34,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:26:34,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:26:34,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:26:34,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:26:34,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:26:34,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:26:34,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:26:34,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:26:34,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:26:34,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:26:34,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:26:34,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:26:34,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:26:34,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:26:34,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:26:34,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:26:34,411 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:26:34,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:26:34,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:26:34,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:26:34,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:26:34,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:26:34,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:26:34,413 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_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bfa83e4265de8b9a1bd21dc33b28b63f68994b9952943e0726905cc1e10334a [2022-11-03 02:26:34,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:26:34,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:26:34,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:26:34,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:26:34,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:26:34,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-fpi/eqn4.c [2022-11-03 02:26:34,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/data/e12e36d13/9af1e21042f04b5881144d8c2062c1ec/FLAGb34e027e5 [2022-11-03 02:26:35,173 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:26:35,174 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/sv-benchmarks/c/array-fpi/eqn4.c [2022-11-03 02:26:35,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/data/e12e36d13/9af1e21042f04b5881144d8c2062c1ec/FLAGb34e027e5 [2022-11-03 02:26:35,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/data/e12e36d13/9af1e21042f04b5881144d8c2062c1ec [2022-11-03 02:26:35,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:26:35,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:26:35,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:26:35,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:26:35,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:26:35,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:35,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b75276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35, skipping insertion in model container [2022-11-03 02:26:35,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:35,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:26:35,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:26:35,856 WARN L230 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_03e41b7e-4898-498d-a8d2-bbcf487f7699/sv-benchmarks/c/array-fpi/eqn4.c[587,600] [2022-11-03 02:26:35,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:26:35,907 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:26:35,929 WARN L230 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_03e41b7e-4898-498d-a8d2-bbcf487f7699/sv-benchmarks/c/array-fpi/eqn4.c[587,600] [2022-11-03 02:26:35,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:26:35,962 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:26:35,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35 WrapperNode [2022-11-03 02:26:35,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:26:35,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:26:35,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:26:35,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:26:35,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:35,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,016 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-03 02:26:36,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:26:36,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:26:36,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:26:36,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:26:36,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:26:36,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:26:36,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:26:36,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:26:36,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (1/1) ... [2022-11-03 02:26:36,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:26:36,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:36,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:26:36,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:26:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:26:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:26:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:26:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:26:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:26:36,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:26:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:26:36,226 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:26:36,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:26:36,390 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:26:36,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:26:36,433 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:26:36,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:36 BoogieIcfgContainer [2022-11-03 02:26:36,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:26:36,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:26:36,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:26:36,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:26:36,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:26:35" (1/3) ... [2022-11-03 02:26:36,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356dcaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:36, skipping insertion in model container [2022-11-03 02:26:36,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:35" (2/3) ... [2022-11-03 02:26:36,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356dcaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:36, skipping insertion in model container [2022-11-03 02:26:36,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:36" (3/3) ... [2022-11-03 02:26:36,456 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn4.c [2022-11-03 02:26:36,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:26:36,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:26:36,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:26:36,530 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;@7a09460f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:26:36,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:26:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2022-11-03 02:26:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:26:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:36,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:36,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -794748304, now seen corresponding path program 1 times [2022-11-03 02:26:36,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:36,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130749381] [2022-11-03 02:26:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:36,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:36,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310927590] [2022-11-03 02:26:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:36,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:36,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:36,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:36,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:26:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:36,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:26:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:37,044 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-03 02:26:37,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-03 02:26:37,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:37,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:37,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 02:26:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:37,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:37,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130749381] [2022-11-03 02:26:37,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310927590] [2022-11-03 02:26:37,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310927590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:37,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:37,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152312876] [2022-11-03 02:26:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:37,437 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:37,568 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-03 02:26:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:26:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:37,580 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:26:37,580 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:26:37,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:26:37,589 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:37,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:26:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-03 02:26:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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) [2022-11-03 02:26:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-11-03 02:26:37,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2022-11-03 02:26:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:37,634 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-03 02:26:37,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2022-11-03 02:26:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:26:37,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:37,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:37,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 02:26:37,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1127926275, now seen corresponding path program 1 times [2022-11-03 02:26:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:37,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554186358] [2022-11-03 02:26:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:37,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914188404] [2022-11-03 02:26:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:37,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:37,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:26:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:37,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:26:37,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:37,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:37,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554186358] [2022-11-03 02:26:37,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914188404] [2022-11-03 02:26:37,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914188404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:37,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:37,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063046246] [2022-11-03 02:26:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:37,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:37,996 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:38,045 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-03 02:26:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:26:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:26:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:38,046 INFO L225 Difference]: With dead ends: 25 [2022-11-03 02:26:38,046 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:26:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:38,048 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:38,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:26:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:26:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-03 02:26:38,052 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) [2022-11-03 02:26:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-03 02:26:38,053 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2022-11-03 02:26:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:38,054 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-03 02:26:38,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-03 02:26:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:26:38,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:38,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:38,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:38,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:38,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash 849022933, now seen corresponding path program 1 times [2022-11-03 02:26:38,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:38,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682910287] [2022-11-03 02:26:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:38,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403028344] [2022-11-03 02:26:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:38,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:38,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:26:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:38,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:26:38,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:38,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:38,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:38,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682910287] [2022-11-03 02:26:38,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:38,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403028344] [2022-11-03 02:26:38,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403028344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:38,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212076768] [2022-11-03 02:26:38,516 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:38,516 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:38,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:38,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:38,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:38,754 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:38,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:38,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:26:38,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:26:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:38,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:26:39,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:39,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,405 INFO L356 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-03 02:26:39,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 524 treesize of output 534 [2022-11-03 02:26:39,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:39,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:39,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:40,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '238#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (<= ~N~0 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:40,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:40,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:40,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-03 02:26:40,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991165743] [2022-11-03 02:26:40,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:40,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:26:40,155 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:40,256 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-03 02:26:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:26:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:40,257 INFO L225 Difference]: With dead ends: 29 [2022-11-03 02:26:40,258 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:26:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:26:40,259 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:40,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:26:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2022-11-03 02:26:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2022-11-03 02:26:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-03 02:26:40,264 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-11-03 02:26:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:40,264 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-03 02:26:40,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-03 02:26:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:26:40,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:40,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:40,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:40,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 02:26:40,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash 545227070, now seen corresponding path program 1 times [2022-11-03 02:26:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:40,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296111762] [2022-11-03 02:26:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:40,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:40,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231062989] [2022-11-03 02:26:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:40,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:40,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:40,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:40,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:26:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:40,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:26:40,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:40,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:26:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:40,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-11-03 02:26:40,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:40,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:26:40,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:40,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:26:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:40,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:40,967 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_114 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_114) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2022-11-03 02:26:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-03 02:26:40,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:40,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296111762] [2022-11-03 02:26:40,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231062989] [2022-11-03 02:26:40,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231062989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [115684449] [2022-11-03 02:26:41,001 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:41,006 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:41,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:41,007 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:41,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:41,103 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:26:41,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:26:41,273 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:41,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:41,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:26:41,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:41,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,683 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:41,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:26:41,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,839 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:41,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:41,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,922 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:41,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:41,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:41,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:41,967 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:41,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:41,985 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:42,352 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '369#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:42,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:42,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:42,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-03 02:26:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525573978] [2022-11-03 02:26:42,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:26:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:26:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2022-11-03 02:26:42,354 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-11-03 02:26:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:42,512 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-03 02:26:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:26:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 [2022-11-03 02:26:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:42,514 INFO L225 Difference]: With dead ends: 32 [2022-11-03 02:26:42,514 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 02:26:42,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=246, Unknown=1, NotChecked=32, Total=342 [2022-11-03 02:26:42,515 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:42,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-03 02:26:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 02:26:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 17. [2022-11-03 02:26:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 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) [2022-11-03 02:26:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-03 02:26:42,522 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2022-11-03 02:26:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:42,523 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-03 02:26:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-11-03 02:26:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-11-03 02:26:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:26:42,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:42,524 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:42,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:42,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:42,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1813092602, now seen corresponding path program 1 times [2022-11-03 02:26:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:42,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495014148] [2022-11-03 02:26:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:42,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:42,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889769352] [2022-11-03 02:26:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:42,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:42,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:42,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:26:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:26:42,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:42,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:42,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:42,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495014148] [2022-11-03 02:26:42,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:42,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889769352] [2022-11-03 02:26:42,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889769352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:42,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:42,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189285705] [2022-11-03 02:26:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:42,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:42,872 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:42,951 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-03 02:26:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:26:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:42,953 INFO L225 Difference]: With dead ends: 31 [2022-11-03 02:26:42,954 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 02:26:42,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:42,958 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:42,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 02:26:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-03 02:26:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-11-03 02:26:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-03 02:26:42,969 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2022-11-03 02:26:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:42,970 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-03 02:26:42,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-03 02:26:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:26:42,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:42,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:43,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:43,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:43,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash -282510091, now seen corresponding path program 2 times [2022-11-03 02:26:43,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:43,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959625706] [2022-11-03 02:26:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:43,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:43,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419353267] [2022-11-03 02:26:43,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:26:43,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:43,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:43,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:43,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:26:43,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:26:43,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:26:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:26:43,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:43,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:43,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959625706] [2022-11-03 02:26:43,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419353267] [2022-11-03 02:26:43,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419353267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385956617] [2022-11-03 02:26:43,377 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:43,378 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:43,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:43,378 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:43,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:43,506 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:43,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:43,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:26:43,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:26:43,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:43,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:43,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:43,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:43,872 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:43,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-03 02:26:44,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:44,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:44,053 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:44,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:26:44,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:44,096 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:44,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:44,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:44,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:44,143 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:44,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:44,169 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:44,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '621#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:44,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:44,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:44,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-03 02:26:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606058362] [2022-11-03 02:26:44,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:44,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:26:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:26:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:26:44,613 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-03 02:26:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:44,714 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-03 02:26:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:44,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) Word has length 10 [2022-11-03 02:26:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:44,716 INFO L225 Difference]: With dead ends: 33 [2022-11-03 02:26:44,716 INFO L226 Difference]: Without dead ends: 27 [2022-11-03 02:26:44,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:26:44,717 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:44,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-03 02:26:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2022-11-03 02:26:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2022-11-03 02:26:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-03 02:26:44,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2022-11-03 02:26:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:44,722 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-03 02:26:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-03 02:26:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-03 02:26:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:26:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:44,723 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:44,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:44,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash -338579101, now seen corresponding path program 3 times [2022-11-03 02:26:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:44,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317451669] [2022-11-03 02:26:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:44,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:44,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103517602] [2022-11-03 02:26:44,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:26:44,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:44,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:44,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:26:45,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:26:45,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:26:45,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:26:45,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:45,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:45,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317451669] [2022-11-03 02:26:45,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103517602] [2022-11-03 02:26:45,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103517602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:45,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543896327] [2022-11-03 02:26:45,106 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:45,106 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:45,106 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:45,106 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:45,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:45,230 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:45,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:45,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:26:45,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:26:45,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:45,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,562 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:45,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:26:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:45,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,695 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:45,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,771 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:45,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:45,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:45,814 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:45,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:45,833 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:46,160 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '765#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:46,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:46,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:46,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-03 02:26:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063625189] [2022-11-03 02:26:46,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:26:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:26:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:26:46,162 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 9 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) [2022-11-03 02:26:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:46,295 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-03 02:26:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:26:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 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) Word has length 10 [2022-11-03 02:26:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:46,296 INFO L225 Difference]: With dead ends: 37 [2022-11-03 02:26:46,297 INFO L226 Difference]: Without dead ends: 32 [2022-11-03 02:26:46,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:26:46,298 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:46,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-03 02:26:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2022-11-03 02:26:46,301 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) [2022-11-03 02:26:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-03 02:26:46,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-11-03 02:26:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:46,302 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-03 02:26:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2022-11-03 02:26:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-03 02:26:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:26:46,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:46,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:46,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:46,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:26:46,504 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1910697616, now seen corresponding path program 4 times [2022-11-03 02:26:46,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:46,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30061669] [2022-11-03 02:26:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:46,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478435300] [2022-11-03 02:26:46,530 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:26:46,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:46,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:46,531 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:46,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:26:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:46,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:26:46,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:46,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:26:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:46,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-11-03 02:26:46,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:46,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:26:46,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:26:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:46,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:26:46,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:46,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:26:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:46,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:47,243 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_251 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_251) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2022-11-03 02:26:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-03 02:26:47,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30061669] [2022-11-03 02:26:47,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478435300] [2022-11-03 02:26:47,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478435300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207958677] [2022-11-03 02:26:47,260 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:47,260 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:47,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:47,261 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:47,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:47,396 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:26:47,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:26:47,480 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:26:47,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:26:47,614 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:47,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:47,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:47,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:47,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:47,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:47,944 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:47,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-03 02:26:48,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:48,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:48,075 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:48,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:48,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:48,187 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:48,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:48,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:48,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:48,238 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:48,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:48,262 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:48,591 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '930#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:48,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:48,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:48,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-03 02:26:48,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440316164] [2022-11-03 02:26:48,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:26:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:48,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:26:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=248, Unknown=1, NotChecked=32, Total=342 [2022-11-03 02:26:48,593 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2022-11-03 02:26:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:48,898 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-11-03 02:26:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:26:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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 11 [2022-11-03 02:26:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:48,902 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:26:48,902 INFO L226 Difference]: Without dead ends: 43 [2022-11-03 02:26:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=526, Unknown=1, NotChecked=48, Total=702 [2022-11-03 02:26:48,904 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:48,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 26 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 51 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-11-03 02:26:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-03 02:26:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 19. [2022-11-03 02:26:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2022-11-03 02:26:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-11-03 02:26:48,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2022-11-03 02:26:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:48,926 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-03 02:26:48,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2022-11-03 02:26:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-11-03 02:26:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:26:48,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:48,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:48,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-03 02:26:49,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:26:49,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -701556884, now seen corresponding path program 1 times [2022-11-03 02:26:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:49,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49508836] [2022-11-03 02:26:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:49,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:49,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:49,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854917263] [2022-11-03 02:26:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:49,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:49,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:49,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:49,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:26:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:26:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:49,315 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 02:26:49,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-03 02:26:49,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 28 treesize of output 31 [2022-11-03 02:26:49,346 INFO L356 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-03 02:26:49,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-03 02:26:49,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:49,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-03 02:26:49,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 02:26:49,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-03 02:26:49,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:49,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-03 02:26:49,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:26:49,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:49,575 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:49,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:26:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:49,613 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:49,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-03 02:26:49,763 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:26:49,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 34 [2022-11-03 02:26:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:49,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:50,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49508836] [2022-11-03 02:26:50,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854917263] [2022-11-03 02:26:50,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854917263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2073127996] [2022-11-03 02:26:50,289 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:26:50,290 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:50,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:50,290 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:50,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:50,417 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:50,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:50,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:26:50,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:26:50,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:26:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:50,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:50,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,769 INFO L356 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-03 02:26:50,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 527 [2022-11-03 02:26:50,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:50,905 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:50,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:50,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:50,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:50,981 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:50,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:51,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:51,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:51,036 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:51,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:51,132 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:51,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1128#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:51,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:51,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:51,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2022-11-03 02:26:51,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300916200] [2022-11-03 02:26:51,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:51,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:26:51,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:51,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:26:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:26:51,797 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:52,020 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-03 02:26:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 02:26:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:52,021 INFO L225 Difference]: With dead ends: 26 [2022-11-03 02:26:52,021 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:26:52,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:26:52,022 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:52,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-11-03 02:26:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:26:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-03 02:26:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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) [2022-11-03 02:26:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-03 02:26:52,029 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2022-11-03 02:26:52,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:52,029 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-03 02:26:52,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-03 02:26:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:26:52,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:52,030 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:52,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:52,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:52,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1915831248, now seen corresponding path program 5 times [2022-11-03 02:26:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403795498] [2022-11-03 02:26:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:52,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:52,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703240776] [2022-11-03 02:26:52,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:26:52,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:52,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:52,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:52,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:26:52,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:26:52,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:26:52,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:52,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:52,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:52,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:52,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403795498] [2022-11-03 02:26:52,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:52,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703240776] [2022-11-03 02:26:52,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703240776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:52,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538622066] [2022-11-03 02:26:52,589 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:26:52,589 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:52,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:52,589 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:52,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:52,719 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:26:52,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:26:52,788 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:26:52,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:26:52,910 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:52,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:52,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:52,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,226 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:53,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:26:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,341 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:53,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,418 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:53,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:53,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:53,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:53,460 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:53,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:53,475 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:53,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1299#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:53,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:53,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:53,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-03 02:26:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261506169] [2022-11-03 02:26:53,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:26:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:26:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:26:53,775 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) [2022-11-03 02:26:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:54,109 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2022-11-03 02:26:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:26:54,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:26:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:54,110 INFO L225 Difference]: With dead ends: 78 [2022-11-03 02:26:54,110 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 02:26:54,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:26:54,111 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 106 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:54,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 38 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 02:26:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 34. [2022-11-03 02:26:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2022-11-03 02:26:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-03 02:26:54,125 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2022-11-03 02:26:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:54,125 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-03 02:26:54,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) [2022-11-03 02:26:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-03 02:26:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:26:54,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:54,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:54,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:54,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:26:54,337 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash -385990150, now seen corresponding path program 2 times [2022-11-03 02:26:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:54,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637763995] [2022-11-03 02:26:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:54,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:54,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798853537] [2022-11-03 02:26:54,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:26:54,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:54,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:54,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:54,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:26:54,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:26:54,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:26:54,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 02:26:54,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:54,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:26:54,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:26:54,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:26:54,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:26:54,689 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:26:54,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:26:54,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:26:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 26 [2022-11-03 02:26:54,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,759 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:54,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:26:54,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,798 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:54,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-03 02:26:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:54,832 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:54,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-03 02:26:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:54,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:56,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637763995] [2022-11-03 02:26:56,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798853537] [2022-11-03 02:26:56,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798853537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1522409592] [2022-11-03 02:26:56,882 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:26:56,883 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:56,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:56,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:56,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:56,998 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:26:56,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:26:57,074 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:26:57,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:26:57,222 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:26:57,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:26:57,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:26:57,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,503 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:26:57,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:26:57,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:26:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,627 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:57,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,702 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:26:57,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:26:57,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:26:57,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:26:57,752 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:26:57,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:26:57,860 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:26:58,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1594#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:26:58,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:26:58,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:58,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2022-11-03 02:26:58,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606632342] [2022-11-03 02:26:58,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:26:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:26:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:58,551 INFO L87 Difference]: Start difference. First operand 34 states and 42 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) [2022-11-03 02:26:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:58,886 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2022-11-03 02:26:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:26:58,887 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 14 [2022-11-03 02:26:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:58,887 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:26:58,887 INFO L226 Difference]: Without dead ends: 43 [2022-11-03 02:26:58,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:26:58,889 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:58,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-03 02:26:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-03 02:26:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-11-03 02:26:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-03 02:26:58,913 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2022-11-03 02:26:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:58,913 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-03 02:26:58,913 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) [2022-11-03 02:26:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-03 02:26:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:26:58,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:58,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:58,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:26:59,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1968965520, now seen corresponding path program 6 times [2022-11-03 02:26:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:59,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117177344] [2022-11-03 02:26:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:59,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:59,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546169373] [2022-11-03 02:26:59,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:26:59,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:59,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:59,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:27:00,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:27:00,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:27:00,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:27:00,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:00,053 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-03 02:27:00,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-03 02:27:00,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:27:00,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:27:00,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 11 [2022-11-03 02:27:00,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 02:27:00,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:27:00,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:27:00,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:27:00,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:27:00,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 02:27:00,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:00,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:27:00,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:00,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:27:00,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:00,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:27:00,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:00,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:27:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:00,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:01,116 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2022-11-03 02:27:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2022-11-03 02:27:01,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:01,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117177344] [2022-11-03 02:27:01,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:27:01,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546169373] [2022-11-03 02:27:01,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546169373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [945542621] [2022-11-03 02:27:01,135 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:27:01,136 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:27:01,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:27:01,136 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:27:01,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:27:01,214 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:27:01,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:27:01,347 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:27:01,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:27:01,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:27:01,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:27:01,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,601 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:27:01,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:27:01,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:27:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,705 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:27:01,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:27:01,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,823 INFO L356 Elim1Store]: treesize reduction 253, result has 10.3 percent of original size [2022-11-03 02:27:01,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 177 [2022-11-03 02:27:01,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:01,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:01,886 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:27:01,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:27:01,899 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:27:02,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1846#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:27:02,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:27:02,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:27:02,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-11-03 02:27:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955915373] [2022-11-03 02:27:02,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:27:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:27:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=441, Unknown=1, NotChecked=44, Total=600 [2022-11-03 02:27:02,286 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2022-11-03 02:27:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:02,941 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-11-03 02:27:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:27:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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 15 [2022-11-03 02:27:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:02,942 INFO L225 Difference]: With dead ends: 88 [2022-11-03 02:27:02,942 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 02:27:02,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=213, Invalid=980, Unknown=1, NotChecked=66, Total=1260 [2022-11-03 02:27:02,944 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:02,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 104 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 165 Invalid, 0 Unknown, 142 Unchecked, 0.3s Time] [2022-11-03 02:27:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 02:27:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 43. [2022-11-03 02:27:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 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) [2022-11-03 02:27:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-03 02:27:02,957 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2022-11-03 02:27:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:02,957 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-03 02:27:02,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2022-11-03 02:27:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-03 02:27:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:27:02,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:02,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:02,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:03,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash 226857964, now seen corresponding path program 3 times [2022-11-03 02:27:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492356226] [2022-11-03 02:27:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:03,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:27:03,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453705692] [2022-11-03 02:27:03,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:27:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:03,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:03,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:27:03,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:27:03,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:27:03,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 02:27:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:03,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:27:03,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:27:03,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2022-11-03 02:27:03,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:27:03,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:27:03,708 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:27:03,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 125 treesize of output 117 [2022-11-03 02:27:03,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:03,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 188 [2022-11-03 02:27:03,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 76 [2022-11-03 02:27:03,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,808 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:27:03,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2022-11-03 02:27:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,870 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:27:03,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 56 [2022-11-03 02:27:03,966 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:27:03,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 167 treesize of output 149 [2022-11-03 02:27:03,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:03,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:03,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-03 02:27:04,138 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:27:04,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 209 treesize of output 189 [2022-11-03 02:27:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 173 [2022-11-03 02:27:04,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 61 [2022-11-03 02:27:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:27:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:04,271 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:27:04,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 68 [2022-11-03 02:27:04,486 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-03 02:27:04,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 40 [2022-11-03 02:27:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:04,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:45,790 WARN L234 SmtUtils]: Spent 25.62s on a formula simplification. DAG size of input: 101 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:59,895 WARN L234 SmtUtils]: Spent 45.89s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:28:59,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492356226] [2022-11-03 02:28:59,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453705692] [2022-11-03 02:28:59,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453705692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671383105] [2022-11-03 02:28:59,928 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:28:59,928 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:28:59,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:28:59,929 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:28:59,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:29:00,078 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:29:00,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:29:00,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:29:00,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:29:00,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:29:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:00,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:00,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,484 INFO L356 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-03 02:29:00,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 532 [2022-11-03 02:29:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:29:00,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,690 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:00,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:29:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:00,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:00,834 INFO L356 Elim1Store]: treesize reduction 253, result has 10.3 percent of original size [2022-11-03 02:29:00,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 177 [2022-11-03 02:29:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:00,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:00,895 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:00,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:29:00,961 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:29:03,761 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2189#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:29:03,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:29:03,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:29:03,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-03 02:29:03,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540714397] [2022-11-03 02:29:03,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:29:03,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:29:03,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:29:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=690, Unknown=14, NotChecked=0, Total=812 [2022-11-03 02:29:03,763 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:13,455 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-03 02:29:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:29:13,458 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 02:29:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:13,459 INFO L225 Difference]: With dead ends: 66 [2022-11-03 02:29:13,459 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 02:29:13,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 125.7s TimeCoverageRelationStatistics Valid=156, Invalid=949, Unknown=17, NotChecked=0, Total=1122 [2022-11-03 02:29:13,461 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:13,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-11-03 02:29:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 02:29:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2022-11-03 02:29:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 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) [2022-11-03 02:29:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2022-11-03 02:29:13,479 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 16 [2022-11-03 02:29:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:13,480 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2022-11-03 02:29:13,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2022-11-03 02:29:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:29:13,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:13,481 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:13,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:29:13,709 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1399993040, now seen corresponding path program 4 times [2022-11-03 02:29:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:13,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954028338] [2022-11-03 02:29:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:13,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:13,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933274943] [2022-11-03 02:29:13,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:29:13,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:13,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:13,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:29:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:14,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 02:29:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:14,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:29:14,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:29:14,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2022-11-03 02:29:14,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:29:14,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:29:14,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,100 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:14,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-03 02:29:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,164 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:14,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 46 [2022-11-03 02:29:14,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,272 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-11-03 02:29:14,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 56 [2022-11-03 02:29:14,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:14,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:14,352 INFO L356 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-03 02:29:14,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 66 [2022-11-03 02:29:14,750 INFO L356 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-03 02:29:14,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 47 [2022-11-03 02:29:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:14,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:39,276 WARN L234 SmtUtils]: Spent 13.68s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:39,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:39,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954028338] [2022-11-03 02:29:39,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:39,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933274943] [2022-11-03 02:29:39,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933274943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1390796522] [2022-11-03 02:29:39,298 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:29:39,298 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:29:39,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:29:39,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:29:39,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:29:39,440 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:29:39,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:29:39,567 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:29:39,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:29:39,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:29:39,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:29:39,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:39,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:39,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:39,907 INFO L356 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-03 02:29:39,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 529 [2022-11-03 02:29:40,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:29:40,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,044 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:40,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:29:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:40,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:40,199 INFO L356 Elim1Store]: treesize reduction 253, result has 10.3 percent of original size [2022-11-03 02:29:40,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 177 [2022-11-03 02:29:40,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:40,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:29:40,254 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:29:40,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:29:40,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:29:42,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2516#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:29:42,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:29:42,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:29:42,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-03 02:29:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452543353] [2022-11-03 02:29:42,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:29:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:29:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:29:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:29:42,425 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 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) [2022-11-03 02:30:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:00,209 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2022-11-03 02:30:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:30:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 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) Word has length 17 [2022-11-03 02:30:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:00,211 INFO L225 Difference]: With dead ends: 82 [2022-11-03 02:30:00,211 INFO L226 Difference]: Without dead ends: 69 [2022-11-03 02:30:00,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:30:00,213 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:00,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 19 Unchecked, 2.3s Time] [2022-11-03 02:30:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-03 02:30:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2022-11-03 02:30:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 61 states have internal predecessors, (79), 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) [2022-11-03 02:30:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-03 02:30:00,236 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 17 [2022-11-03 02:30:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:00,237 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-03 02:30:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 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) [2022-11-03 02:30:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-03 02:30:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:30:00,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:00,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:00,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:30:00,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1078330630, now seen corresponding path program 5 times [2022-11-03 02:30:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:00,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075827737] [2022-11-03 02:30:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:00,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:00,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897986976] [2022-11-03 02:30:00,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:30:00,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:00,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:00,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:30:01,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:30:01,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:30:01,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 02:30:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:01,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:30:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:30:01,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:30:01,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:30:01,832 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:30:01,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:30:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:30:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 19 [2022-11-03 02:30:01,915 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:30:01,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:30:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:01,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:30:02,009 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:30:02,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:30:02,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:30:02,024 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:30:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,094 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:30:02,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:30:02,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,188 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:30:02,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-03 02:30:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,264 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:30:02,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 46 [2022-11-03 02:30:02,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,335 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:30:02,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 44 [2022-11-03 02:30:02,436 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:30:02,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 79 treesize of output 75 [2022-11-03 02:30:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:02,456 INFO L356 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-03 02:30:02,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 111 [2022-11-03 02:30:02,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 12 [2022-11-03 02:30:05,278 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:30:05,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 88 [2022-11-03 02:30:05,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:05,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:05,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 35 treesize of output 27 [2022-11-03 02:30:05,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 20 [2022-11-03 02:30:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:05,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:07,750 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse2 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse0 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0)) (= (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse2) 9) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0 1) c_~N~0)))) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse3 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse2)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3 1) c_~N~0)))))) is different from false [2022-11-03 02:30:09,965 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse10 (* .cse11 8)) (.cse7 (<= .cse11 2147483647))) (let ((.cse0 (not .cse7)) (.cse2 (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse5 (+ .cse10 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse0 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse4 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store .cse1 .cse2 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4 1) c_~N~0))))) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store .cse1 .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0)))) .cse7) (or .cse0 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse1 .cse2 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3) 9) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~N~0))))) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~N~0) (= 9 (select (store (store .cse1 .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3))))) .cse7))))) is different from false [2022-11-03 02:30:12,325 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse7 (<= .cse20 2147483647)) (.cse19 (* .cse20 8)) (.cse18 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (<= .cse18 2147483647)) (.cse9 (+ .cse19 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse4 (+ .cse19 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (not .cse7)) (.cse12 (* .cse18 8))) (and (or (not .cse0) (let ((.cse3 (+ .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse1 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store (store .cse2 .cse3 v_ArrVal_654) .cse4 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0))))) (or .cse7 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~N~0) (= 9 (select (store (store (store .cse2 .cse3 v_ArrVal_654) .cse9 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5)))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse10 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse2 .cse3 v_ArrVal_654) .cse4 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10 1) c_~N~0)))) .cse1) (or .cse7 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse11 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse2 .cse3 v_ArrVal_654) .cse9 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11 1) c_~N~0)))))))) (or .cse0 (let ((.cse13 (+ .cse12 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse7 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse14 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (store .cse2 .cse13 v_ArrVal_654) .cse9 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse15 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse2 .cse13 v_ArrVal_654) .cse4 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15 1) c_~N~0)))) .cse1) (or .cse7 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse2 .cse13 v_ArrVal_654) .cse9 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse17 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17 1) c_~N~0) (= 9 (select (store (store (store .cse2 .cse13 v_ArrVal_654) .cse4 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse5))))) .cse1)))))))) is different from false [2022-11-03 02:30:16,264 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse43 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse45 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse44 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse39 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse11 (<= .cse44 2147483647)) (.cse16 (<= .cse45 2147483647)) (.cse41 (* 8 .cse45)) (.cse42 (* .cse44 8)) (.cse25 (<= .cse43 2147483647)) (.cse40 (* .cse43 8))) (let ((.cse24 (+ .cse40 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (not .cse25)) (.cse13 (+ .cse42 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (+ .cse41 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ .cse42 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (not .cse16)) (.cse21 (not .cse11)) (.cse9 (+ .cse40 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse26 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse27 (* 8 .cse39)) (.cse0 (<= .cse39 2147483647))) (and (or .cse0 (let ((.cse10 (+ (select .cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse27)) (select .cse8 (+ (- 34359738368) .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse1 (let ((.cse3 (store .cse8 .cse9 .cse10))) (and (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse2 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse2)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse2 1) c_~N~0) (= 9 (select (store (store (store .cse3 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6))))) (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse3 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7 1) c_~N~0))))))) (or (let ((.cse12 (store .cse8 .cse24 .cse10))) (and (or .cse11 (and (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse15 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse12 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15 1) c_~N~0)))) .cse16) (or .cse17 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse12 .cse13 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse19 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse12 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19 1) c_~N~0)))) .cse16) (or .cse17 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse20 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse20)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse20 1) c_~N~0) (= (select (store (store (store .cse12 .cse13 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9))))))) (or .cse21 (and (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse22 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse12 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22 1) c_~N~0)))) (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse23 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse12 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23 1) c_~N~0)))))))) .cse25)))) (or (let ((.cse31 (+ (select .cse8 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse27))))) (and (or .cse25 (let ((.cse29 (store .cse8 .cse24 .cse31))) (and (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse28 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28)) (= (select (store (store (store .cse29 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28 1) c_~N~0)))) (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse30 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse29 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30 1) c_~N~0))))))) (or .cse1 (let ((.cse32 (store .cse8 .cse9 .cse31))) (and (or .cse11 (and (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse33 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse32 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse33)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse33 1) c_~N~0)))) (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse34 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse32 .cse13 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34 1) c_~N~0)))))) (or (and (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse35 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse32 .cse4 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse35)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse35 1) c_~N~0)))) .cse16) (or .cse16 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse36 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse32 .cse4 v_ArrVal_654) .cse14 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36 1) c_~N~0))))) (or .cse17 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse37 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse32 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse37)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse37 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse38 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse32 .cse4 v_ArrVal_654) .cse5 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse6)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38 1) c_~N~0)))) .cse17)) .cse21)))))) (not .cse0)))))) is different from false [2022-11-03 02:30:23,164 WARN L234 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:57,062 WARN L234 SmtUtils]: Spent 25.31s on a formula simplification. DAG size of input: 165 DAG size of output: 148 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:34,353 WARN L234 SmtUtils]: Spent 27.09s on a formula simplification. DAG size of input: 196 DAG size of output: 178 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:34,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:34,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:34,434 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-03 02:31:34,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 341 treesize of output 1 [2022-11-03 02:31:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-03 02:31:34,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:34,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075827737] [2022-11-03 02:31:34,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:31:34,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897986976] [2022-11-03 02:31:34,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897986976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:34,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25603221] [2022-11-03 02:31:34,441 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:31:34,441 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:31:34,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:31:34,442 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:31:34,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:31:34,610 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:31:34,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:31:34,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:31:34,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:31:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:31:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:34,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:34,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,093 INFO L356 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-03 02:31:35,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 534 [2022-11-03 02:31:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:31:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,244 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:31:35,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:31:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:35,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:35,418 INFO L356 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-03 02:31:35,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 182 [2022-11-03 02:31:35,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:31:35,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:31:35,478 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:31:35,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:31:35,582 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:31:39,821 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2896#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:31:39,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:31:39,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:31:39,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-03 02:31:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861662478] [2022-11-03 02:31:39,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:31:39,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:31:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:31:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=737, Unknown=5, NotChecked=236, Total=1122 [2022-11-03 02:31:39,824 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:31:48,071 WARN L234 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 69 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:55,318 WARN L234 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 81 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:20,566 WARN L234 SmtUtils]: Spent 20.91s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:22,265 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse9 (<= .cse22 2147483647)) (.cse21 (* .cse22 8)) (.cse20 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse4 (<= .cse20 2147483647)) (.cse11 (+ .cse21 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse7 (+ .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (not .cse9)) (.cse14 (* .cse20 8))) (and (< 4 c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= 2 |c_ULTIMATE.start_main_~i~0#1|) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse2 (select .cse1 .cse3)) (.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= (+ .cse0 (select .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse2) (= (+ .cse0 1) .cse2) (= 8 .cse0)))) (or (not .cse4) (let ((.cse6 (+ .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse5 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store (store .cse1 .cse6 v_ArrVal_654) .cse7 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~N~0))))) (or .cse9 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse10 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse10 1) c_~N~0) (= 9 (select (store (store (store .cse1 .cse6 v_ArrVal_654) .cse11 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3)))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse12 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse1 .cse6 v_ArrVal_654) .cse7 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse12)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse12 1) c_~N~0)))) .cse5) (or .cse9 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse13 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store (store (store .cse1 .cse6 v_ArrVal_654) .cse11 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13 1) c_~N~0)))))))) (or .cse4 (let ((.cse15 (+ .cse14 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse9 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (store .cse1 .cse15 v_ArrVal_654) .cse11 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse17 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse1 .cse15 v_ArrVal_654) .cse7 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17 1) c_~N~0)))) .cse5) (or .cse9 (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (store .cse1 .cse15 v_ArrVal_654) .cse11 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1) c_~N~0))))) (or (forall ((v_ArrVal_654 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (v_ArrVal_657 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse19 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19 1) c_~N~0) (= 9 (select (store (store (store .cse1 .cse15 v_ArrVal_654) .cse7 v_ArrVal_657) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse3))))) .cse5)))) (<= c_~N~0 5))))) is different from false [2022-11-03 02:32:37,107 WARN L234 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:44,027 WARN L234 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 81 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:51,586 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= (+ .cse0 1) (select .cse1 .cse2)) (= 8 .cse0)))) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse3 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3)) (= (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse2) 9) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3 1) c_~N~0)))) (< 4 c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_659 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse4 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 9 (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_659) .cse2)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4 1) c_~N~0)))) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int) (v_DerPreprocessor_17 Int) (|aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51| Int) (|aux_div_v_ULTIMATE.start_main_~i~0#1_266_51| Int)) (let ((.cse6 (let ((.cse9 (* 8 (mod |aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51| 4294967296)))) (let ((.cse8 (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|))) (store (store .cse1 .cse8 v_DerPreprocessor_17) (+ .cse9 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse1 .cse8))))) (.cse5 (* |aux_div_v_ULTIMATE.start_main_~i~0#1_266_51| 4294967296)) (.cse7 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (< (+ |aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51| .cse5) c_~N~0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (<= 0 |aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51|) (= (select .cse6 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (+ .cse7 1) (select .cse6 .cse2)) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51| .cse5 1)) (= 8 .cse7) (<= |aux_mod_v_ULTIMATE.start_main_~i~0#1_266_51| 2147483647)))) (<= c_~N~0 5))) is different from false [2022-11-03 02:32:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:52,497 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2022-11-03 02:32:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:32:52,498 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:32:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:52,499 INFO L225 Difference]: With dead ends: 86 [2022-11-03 02:32:52,499 INFO L226 Difference]: Without dead ends: 84 [2022-11-03 02:32:52,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 161.3s TimeCoverageRelationStatistics Valid=224, Invalid=1195, Unknown=11, NotChecked=462, Total=1892 [2022-11-03 02:32:52,501 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:52,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 61 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 202 Unchecked, 0.3s Time] [2022-11-03 02:32:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-03 02:32:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2022-11-03 02:32:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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) [2022-11-03 02:32:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2022-11-03 02:32:52,565 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 18 [2022-11-03 02:32:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:52,565 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2022-11-03 02:32:52,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2022-11-03 02:32:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:32:52,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:52,566 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:52,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:32:52,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash -347363142, now seen corresponding path program 6 times [2022-11-03 02:32:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:52,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499417526] [2022-11-03 02:32:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:52,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:32:52,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360009322] [2022-11-03 02:32:52,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:32:52,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:52,798 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:52,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:32:52,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:32:52,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:32:52,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:32:52,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:32:53,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:32:53,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499417526] [2022-11-03 02:32:53,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:32:53,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360009322] [2022-11-03 02:32:53,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360009322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:53,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774237135] [2022-11-03 02:32:53,142 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:32:53,142 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:32:53,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:32:53,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:32:53,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:32:53,329 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:32:53,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:32:53,484 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:32:53,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:32:53,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:32:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:32:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:53,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:53,880 INFO L356 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-03 02:32:53,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 534 [2022-11-03 02:32:54,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:32:54,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,066 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:32:54,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:32:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:54,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:54,263 INFO L356 Elim1Store]: treesize reduction 253, result has 10.3 percent of original size [2022-11-03 02:32:54,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 177 [2022-11-03 02:32:54,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:54,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:54,326 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:32:54,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:32:54,397 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:32:55,132 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3296#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:32:55,132 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:32:55,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:32:55,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-03 02:32:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56186333] [2022-11-03 02:32:55,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:32:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:32:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:32:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:32:55,134 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:56,264 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2022-11-03 02:32:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:32:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:32:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:56,265 INFO L225 Difference]: With dead ends: 143 [2022-11-03 02:32:56,266 INFO L226 Difference]: Without dead ends: 120 [2022-11-03 02:32:56,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=536, Invalid=1914, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 02:32:56,267 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 115 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:56,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 192 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:32:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-03 02:32:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 46. [2022-11-03 02:32:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-03 02:32:56,312 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 18 [2022-11-03 02:32:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:56,313 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-03 02:32:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-03 02:32:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:32:56,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:56,314 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:56,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:32:56,521 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1564621520, now seen corresponding path program 7 times [2022-11-03 02:32:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800246960] [2022-11-03 02:32:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:56,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:32:56,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152349173] [2022-11-03 02:32:56,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:32:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:56,552 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:56,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:32:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:56,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:32:56,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:32:56,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:32:56,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800246960] [2022-11-03 02:32:56,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:32:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152349173] [2022-11-03 02:32:56,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152349173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822165313] [2022-11-03 02:32:56,963 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:32:56,963 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:32:56,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:32:56,963 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:32:56,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:32:57,121 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:32:57,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:32:57,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:32:57,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:32:57,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:32:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,486 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:32:57,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-03 02:32:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:32:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,603 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:32:57,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:32:57,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,819 INFO L356 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-03 02:32:57,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 182 [2022-11-03 02:32:57,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:57,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:32:57,880 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:32:57,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:32:57,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:32:58,361 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3768#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:32:58,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:32:58,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:32:58,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-03 02:32:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7933751] [2022-11-03 02:32:58,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:32:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:32:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:32:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:32:58,363 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:59,046 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2022-11-03 02:32:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:32:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:32:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:59,048 INFO L225 Difference]: With dead ends: 114 [2022-11-03 02:32:59,048 INFO L226 Difference]: Without dead ends: 101 [2022-11-03 02:32:59,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:32:59,049 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:59,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 68 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:32:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-03 02:32:59,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 65. [2022-11-03 02:32:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 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) [2022-11-03 02:32:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2022-11-03 02:32:59,109 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 19 [2022-11-03 02:32:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2022-11-03 02:32:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2022-11-03 02:32:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:32:59,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:59,111 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:59,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:59,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:32:59,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:59,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1445055253, now seen corresponding path program 8 times [2022-11-03 02:32:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:59,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335771201] [2022-11-03 02:32:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:59,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:32:59,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679799205] [2022-11-03 02:32:59,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:32:59,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:59,355 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:59,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 02:33:02,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 02:33:02,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:33:02,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:33:02,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:02,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:03,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:03,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335771201] [2022-11-03 02:33:03,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:33:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679799205] [2022-11-03 02:33:03,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679799205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:33:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769803821] [2022-11-03 02:33:03,132 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:33:03,132 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:33:03,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:33:03,132 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:33:03,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:33:03,235 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:33:03,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:33:03,408 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:33:03,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:33:03,573 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:33:03,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:33:03,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:03,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:33:03,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:03,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:03,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:03,955 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:33:03,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-03 02:33:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:04,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:33:04,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:04,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:04,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:04,100 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:04,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:33:04,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:04,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:04,145 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:04,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:33:04,168 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:05,162 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4219#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:33:05,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:33:05,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:33:05,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2022-11-03 02:33:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237032808] [2022-11-03 02:33:05,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:33:05,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:33:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:33:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:33:05,165 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2022-11-03 02:33:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:07,117 INFO L93 Difference]: Finished difference Result 223 states and 241 transitions. [2022-11-03 02:33:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 02:33:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 02:33:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:07,120 INFO L225 Difference]: With dead ends: 223 [2022-11-03 02:33:07,120 INFO L226 Difference]: Without dead ends: 207 [2022-11-03 02:33:07,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 16 SyntacticMatches, 13 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1012, Invalid=3958, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 02:33:07,123 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 365 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:07,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 99 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:33:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-03 02:33:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 100. [2022-11-03 02:33:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2022-11-03 02:33:07,206 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 20 [2022-11-03 02:33:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:07,207 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2022-11-03 02:33:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2022-11-03 02:33:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2022-11-03 02:33:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:33:07,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:07,208 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:07,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:07,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:33:07,409 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1802518636, now seen corresponding path program 7 times [2022-11-03 02:33:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959001762] [2022-11-03 02:33:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:07,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:07,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617332745] [2022-11-03 02:33:07,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:33:07,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:07,435 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:07,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 02:33:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:09,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:33:09,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:09,868 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 02:33:09,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-03 02:33:09,903 INFO L356 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-03 02:33:09,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2022-11-03 02:33:09,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:33:09,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:33:09,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 17 [2022-11-03 02:33:09,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 02:33:09,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-11-03 02:33:10,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:10,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 48 [2022-11-03 02:33:10,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2022-11-03 02:33:10,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:33:10,170 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:33:10,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:33:10,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:33:10,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,246 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:33:10,317 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:33:10,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:33:10,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:33:10,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,395 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:33:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,439 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:33:10,524 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:33:10,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 147 treesize of output 135 [2022-11-03 02:33:10,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:33:10,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-03 02:33:10,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,681 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-03 02:33:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,758 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 46 [2022-11-03 02:33:10,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,858 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-03 02:33:10,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:10,929 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:33:10,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-03 02:33:11,149 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:33:11,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 32 [2022-11-03 02:33:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:11,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:02,778 WARN L234 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 121 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:13,867 WARN L234 SmtUtils]: Spent 42.89s on a formula simplification. DAG size of input: 147 DAG size of output: 133 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 25 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:13,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959001762] [2022-11-03 02:35:13,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:35:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617332745] [2022-11-03 02:35:13,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617332745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:13,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1840274655] [2022-11-03 02:35:13,899 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:35:13,900 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:35:13,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:35:13,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:35:13,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:35:14,071 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:35:14,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:35:14,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:35:14,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:35:14,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:35:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,433 INFO L356 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-03 02:35:14,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 532 [2022-11-03 02:35:14,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:35:14,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,645 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:14,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:35:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,732 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:35:14,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:35:14,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:14,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:14,796 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:14,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:35:14,879 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:35:22,650 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4931#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:35:22,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:35:22,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:35:22,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2022-11-03 02:35:22,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785455013] [2022-11-03 02:35:22,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:22,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:35:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:35:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1077, Unknown=17, NotChecked=0, Total=1260 [2022-11-03 02:35:22,653 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 30 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) [2022-11-03 02:35:25,047 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse32 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse33 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse34 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse35 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse17 (<= .cse35 2147483647)) (.cse23 (* .cse35 8)) (.cse21 (<= .cse34 2147483647)) (.cse29 (* 8 .cse34)) (.cse30 (* .cse33 8)) (.cse31 (* .cse32 8)) (.cse0 (<= .cse33 2147483647)) (.cse1 (<= .cse32 2147483647))) (let ((.cse8 (not .cse1)) (.cse14 (not .cse0)) (.cse7 (+ .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (not .cse21)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (+ .cse31 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse5 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse23)) (.cse24 (not .cse17))) (and (or .cse0 (and (or .cse1 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int)) (= (let ((.cse2 (store (store .cse3 .cse4 v_ArrVal_933) .cse5 v_ArrVal_935))) (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int)) (= 9 (let ((.cse6 (store (store .cse3 .cse7 v_ArrVal_933) .cse5 v_ArrVal_935))) (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse8))) (or (and .cse9 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int)) (= (let ((.cse10 (store (store (store .cse3 .cse4 v_ArrVal_931) .cse5 v_ArrVal_933) .cse11 v_ArrVal_935))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) 9))) .cse1) (or (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int)) (= (let ((.cse12 (store (store .cse3 .cse7 v_ArrVal_933) .cse13 v_ArrVal_935))) (+ (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)) .cse14) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or .cse8 (and (or .cse0 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int) (v_ArrVal_930 Int)) (= 9 (let ((.cse15 (store (store (store (store .cse3 .cse7 v_ArrVal_930) .cse5 v_ArrVal_931) .cse11 v_ArrVal_933) .cse16 v_ArrVal_935))) (+ (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))) (or (and (or .cse17 (and (or .cse9 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int) (v_ArrVal_930 Int)) (= 9 (let ((.cse18 (store (store (store (store .cse3 .cse7 v_ArrVal_930) .cse13 v_ArrVal_931) .cse19 v_ArrVal_933) .cse16 v_ArrVal_935))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int) (v_ArrVal_930 Int)) (= 9 (let ((.cse20 (store (store (store (store .cse3 .cse7 v_ArrVal_930) .cse13 v_ArrVal_931) .cse11 v_ArrVal_933) .cse16 v_ArrVal_935))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse21))) (or (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int) (v_ArrVal_930 Int)) (= (let ((.cse22 (store (store (store (store .cse3 .cse7 v_ArrVal_930) .cse13 v_ArrVal_931) .cse19 v_ArrVal_933) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse23) v_ArrVal_935))) (+ (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)) .cse24)) .cse14))) (= 8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse8 (and (or .cse21 (and (or .cse14 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int)) (= 9 (let ((.cse25 (store (store (store .cse3 .cse7 v_ArrVal_931) .cse13 v_ArrVal_933) .cse11 v_ArrVal_935))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or .cse0 (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int)) (= 9 (let ((.cse26 (store (store (store .cse3 .cse7 v_ArrVal_931) .cse5 v_ArrVal_933) .cse11 v_ArrVal_935))) (+ (select .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (or (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int)) (= 9 (let ((.cse27 (store (store (store .cse3 .cse7 v_ArrVal_931) .cse13 v_ArrVal_933) .cse19 v_ArrVal_935))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse9))) (or (and (forall ((v_ArrVal_935 Int) (v_ArrVal_933 Int) (v_ArrVal_931 Int) (v_ArrVal_930 Int)) (= (let ((.cse28 (store (store (store (store .cse3 .cse4 v_ArrVal_930) .cse5 v_ArrVal_931) .cse11 v_ArrVal_933) .cse16 v_ArrVal_935))) (+ (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse28) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)) .cse24) .cse1))))) is different from true [2022-11-03 02:35:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:30,803 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2022-11-03 02:35:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:35:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 30 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) Word has length 20 [2022-11-03 02:35:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:30,804 INFO L225 Difference]: With dead ends: 118 [2022-11-03 02:35:30,805 INFO L226 Difference]: Without dead ends: 116 [2022-11-03 02:35:30,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 136.2s TimeCoverageRelationStatistics Valid=208, Invalid=1260, Unknown=18, NotChecked=74, Total=1560 [2022-11-03 02:35:30,806 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:30,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2022-11-03 02:35:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-03 02:35:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2022-11-03 02:35:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 102 states have internal predecessors, (121), 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) [2022-11-03 02:35:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2022-11-03 02:35:30,860 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 20 [2022-11-03 02:35:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:30,860 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2022-11-03 02:35:30,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 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) [2022-11-03 02:35:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2022-11-03 02:35:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:35:30,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:30,862 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:30,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:31,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:31,065 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash -127427938, now seen corresponding path program 8 times [2022-11-03 02:35:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:31,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577594204] [2022-11-03 02:35:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:31,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:35:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282627888] [2022-11-03 02:35:31,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:35:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:31,089 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:31,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 02:35:32,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:35:32,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:32,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:35:32,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:35:32,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:35:32,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:32,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577594204] [2022-11-03 02:35:32,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:35:32,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282627888] [2022-11-03 02:35:32,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282627888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:32,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1019828334] [2022-11-03 02:35:32,366 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:35:32,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:35:32,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:35:32,367 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:35:32,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:35:32,566 INFO L356 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-03 02:35:32,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-03 02:35:32,699 INFO L356 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-03 02:35:32,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-03 02:35:32,869 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:35:32,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:35:32,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:32,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:32,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-03 02:35:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:33,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,192 INFO L356 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-03 02:35:33,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-03 02:35:33,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:35:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,323 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:33,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:35:33,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:33,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:33,595 INFO L356 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-03 02:35:33,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 182 [2022-11-03 02:35:33,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:33,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:33,664 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:33,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:35:33,738 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:35:34,656 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5449#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:35:34,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:35:34,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:35:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-11-03 02:35:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349859553] [2022-11-03 02:35:34,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:34,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:35:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:35:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:35:34,658 INFO L87 Difference]: Start difference. First operand 103 states and 121 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) [2022-11-03 02:35:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:36,185 INFO L93 Difference]: Finished difference Result 177 states and 197 transitions. [2022-11-03 02:35:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:35:36,186 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 21 [2022-11-03 02:35:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:36,188 INFO L225 Difference]: With dead ends: 177 [2022-11-03 02:35:36,188 INFO L226 Difference]: Without dead ends: 148 [2022-11-03 02:35:36,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=468, Invalid=1884, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:35:36,190 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:36,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 164 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:35:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-03 02:35:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 98. [2022-11-03 02:35:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 97 states have internal predecessors, (113), 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) [2022-11-03 02:35:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2022-11-03 02:35:36,268 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 21 [2022-11-03 02:35:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2022-11-03 02:35:36,268 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) [2022-11-03 02:35:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2022-11-03 02:35:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:35:36,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:36,269 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:36,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:36,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:36,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2020506964, now seen corresponding path program 9 times [2022-11-03 02:35:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616771238] [2022-11-03 02:35:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:36,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:35:36,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973343285] [2022-11-03 02:35:36,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:35:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:36,497 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:36,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 02:35:37,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:35:37,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:35:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:37,217 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 02:35:37,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-03 02:35:37,249 INFO L356 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-03 02:35:37,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2022-11-03 02:35:37,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:35:37,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:35:37,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 02:35:37,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-03 02:35:37,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-03 02:35:37,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 32 [2022-11-03 02:35:37,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2022-11-03 02:35:37,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:35:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,448 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:37,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-03 02:35:37,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,502 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:37,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 44 [2022-11-03 02:35:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,552 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:35:37,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 56 [2022-11-03 02:35:37,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,654 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-11-03 02:35:37,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 56 [2022-11-03 02:35:37,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,736 INFO L356 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2022-11-03 02:35:37,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 87 treesize of output 72 [2022-11-03 02:35:37,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:37,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:35:37,832 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 02:35:37,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 84 [2022-11-03 02:35:38,503 INFO L356 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-03 02:35:38,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 49 [2022-11-03 02:35:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:38,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:29,508 WARN L234 SmtUtils]: Spent 18.32s on a formula simplification. DAG size of input: 171 DAG size of output: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:37:19,841 WARN L234 SmtUtils]: Spent 23.16s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:37:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:19,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616771238] [2022-11-03 02:37:19,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:37:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973343285] [2022-11-03 02:37:19,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973343285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:19,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751674857] [2022-11-03 02:37:19,861 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:37:19,861 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:19,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:19,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:19,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:20,019 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:37:20,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:37:20,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:37:20,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:37:20,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:37:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:20,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,453 INFO L356 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-03 02:37:20,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 529 [2022-11-03 02:37:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:37:20,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,614 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:20,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-03 02:37:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:20,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:20,803 INFO L356 Elim1Store]: treesize reduction 253, result has 10.3 percent of original size [2022-11-03 02:37:20,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 177 [2022-11-03 02:37:20,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:20,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:20,883 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:20,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:37:20,975 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:29,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6084#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:29,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:29,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:37:29,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-11-03 02:37:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211922559] [2022-11-03 02:37:29,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:29,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:37:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:37:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=900, Unknown=11, NotChecked=0, Total=1056 [2022-11-03 02:37:29,187 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 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) [2022-11-03 02:37:36,663 WARN L234 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 180 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:37:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:45,693 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2022-11-03 02:37:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:37:45,694 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 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 22 [2022-11-03 02:37:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:45,695 INFO L225 Difference]: With dead ends: 103 [2022-11-03 02:37:45,695 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 02:37:45,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 118.2s TimeCoverageRelationStatistics Valid=207, Invalid=1263, Unknown=12, NotChecked=0, Total=1482 [2022-11-03 02:37:45,697 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:45,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 33 Unchecked, 4.4s Time] [2022-11-03 02:37:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 02:37:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-03 02:37:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 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) [2022-11-03 02:37:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2022-11-03 02:37:45,745 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 22 [2022-11-03 02:37:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:45,745 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2022-11-03 02:37:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 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) [2022-11-03 02:37:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2022-11-03 02:37:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:37:45,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:45,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:45,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:45,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:45,953 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -308755462, now seen corresponding path program 10 times [2022-11-03 02:37:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:45,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641306464] [2022-11-03 02:37:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:45,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:37:45,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943655491] [2022-11-03 02:37:45,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:37:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:45,988 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:46,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-03 02:37:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:51,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-03 02:37:51,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:51,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:37:51,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:37:51,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,275 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:37:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,313 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:37:51,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,355 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:37:51,408 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:37:51,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 68 [2022-11-03 02:37:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-03 02:37:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,479 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:37:51,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,520 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-03 02:37:51,591 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:37:51,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 147 treesize of output 135 [2022-11-03 02:37:51,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:51,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-03 02:37:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,708 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-03 02:37:51,783 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:37:51,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 75 [2022-11-03 02:37:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 133 [2022-11-03 02:37:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,897 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:51,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-03 02:37:51,974 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:37:51,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 75 [2022-11-03 02:37:51,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 133 [2022-11-03 02:37:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:52,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 29 [2022-11-03 02:37:52,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:52,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:52,101 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:37:52,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-03 02:37:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:52,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:47,028 WARN L234 SmtUtils]: Spent 13.87s on a formula simplification. DAG size of input: 121 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:50,645 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse19 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse15 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse33 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse34 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse20 (<= .cse34 2147483647)) (.cse29 (* .cse33 8)) (.cse30 (* .cse15 8)) (.cse31 (* 8 .cse19)) (.cse32 (* .cse34 8)) (.cse16 (<= .cse33 2147483647)) (.cse28 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse24 (<= .cse28 2147483647)) (.cse2 (not .cse16)) (.cse22 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse18 (+ .cse31 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse30)) (.cse12 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse0 (not .cse20)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse30)) (.cse9 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (* .cse28 8))) (and (or (let ((.cse5 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (let ((.cse1 (<= .cse19 2147483647))) (and (or (not .cse1) (and (or .cse2 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse3 (store (store (store (store (store .cse4 .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (let ((.cse13 (<= .cse15 2147483647))) (and (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse10 (store (store (store (store (store .cse4 .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse11 v_ArrVal_1152) .cse12 v_ArrVal_1154))) (+ (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)) .cse13) (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse14 (store (store (store (store (store .cse4 .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse12 v_ArrVal_1154))) (+ (select .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not .cse13)))) .cse16))) (or .cse1 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse17 (store (store (store (store (store .cse4 .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse18 v_ArrVal_1151) .cse11 v_ArrVal_1152) .cse12 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))))))))) (or .cse20 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse21 (store (store (store (store (store .cse4 .cse5 v_ArrVal_1147) .cse22 v_ArrVal_1149) .cse18 v_ArrVal_1151) .cse11 v_ArrVal_1152) .cse12 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (not .cse24)) (or .cse24 (let ((.cse26 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse20 (and .cse2 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse25 (store (store (store (store (store .cse4 .cse26 v_ArrVal_1147) .cse22 v_ArrVal_1149) .cse18 v_ArrVal_1151) .cse11 v_ArrVal_1152) .cse12 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|))) 9)))) (or .cse0 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse27 (store (store (store (store (store .cse4 .cse26 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|))) 9)))))))))) is different from true [2022-11-03 02:38:55,441 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse40 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse41 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse32 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse30 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse42 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse26 (<= .cse42 2147483647)) (.cse35 (* .cse42 8)) (.cse36 (* .cse30 8)) (.cse37 (* .cse32 8)) (.cse38 (* 8 .cse41)) (.cse16 (<= .cse41 2147483647)) (.cse0 (<= .cse40 2147483647)) (.cse39 (* .cse40 8)) (.cse34 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse21 (<= .cse34 2147483647)) (.cse5 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (not .cse0)) (.cse1 (not .cse16)) (.cse6 (+ .cse38 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37)) (.cse8 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (not .cse26)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse19 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (+ .cse38 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse37)) (.cse14 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse15 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse20 (* .cse34 8))) (and (or (let ((.cse4 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse0 (and (or .cse1 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse2 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (and .cse10 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse11 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse16))) (or .cse17 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse18 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) .cse21) (or (not .cse21) (let ((.cse23 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse22 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or .cse17 (and (or .cse1 (let ((.cse24 (<= .cse32 2147483647))) (and (or .cse24 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse25 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (and (or .cse26 (let ((.cse27 (<= .cse30 2147483647))) (and (or (not .cse27) (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse28 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse28) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or .cse27 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse29 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)))))) (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse31 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse10)) (not .cse24))))) (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse33 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) 9)) .cse16)))))))))) is different from true [2022-11-03 02:38:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 1 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-03 02:38:55,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641306464] [2022-11-03 02:38:55,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:38:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943655491] [2022-11-03 02:38:55,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943655491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575308432] [2022-11-03 02:38:55,467 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:38:55,468 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:55,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:55,468 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:55,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:38:55,620 INFO L356 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-03 02:38:55,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-03 02:38:55,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 43 [2022-11-03 02:38:55,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-03 02:38:55,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-03 02:38:55,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:55,990 INFO L356 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-03 02:38:55,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 529 [2022-11-03 02:38:56,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 63 [2022-11-03 02:38:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:56,134 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:38:56,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:38:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:56,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:56,229 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:38:56,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-03 02:38:56,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:56,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:56,288 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:38:56,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-03 02:38:56,371 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:38:59,641 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6575#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= (ite (= (+ (* (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 4) (* |ULTIMATE.start_main_~i~0#1| 4) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:38:59,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:59,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:38:59,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 34 [2022-11-03 02:38:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237130541] [2022-11-03 02:38:59,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 02:38:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 02:38:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=8, NotChecked=146, Total=1560 [2022-11-03 02:38:59,643 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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) [2022-11-03 02:39:01,679 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse40 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse41 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse32 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse30 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse42 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse26 (<= .cse42 2147483647)) (.cse35 (* .cse42 8)) (.cse36 (* .cse30 8)) (.cse37 (* .cse32 8)) (.cse38 (* 8 .cse41)) (.cse16 (<= .cse41 2147483647)) (.cse0 (<= .cse40 2147483647)) (.cse39 (* .cse40 8)) (.cse34 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse21 (<= .cse34 2147483647)) (.cse5 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (not .cse0)) (.cse1 (not .cse16)) (.cse6 (+ .cse38 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37)) (.cse8 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (not .cse26)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse19 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (+ .cse38 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse37)) (.cse14 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse15 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse20 (* .cse34 8))) (and (or (let ((.cse4 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse0 (and (or .cse1 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse2 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (and .cse10 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse11 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse16))) (or .cse17 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse18 (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) .cse21) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= 8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (or (not .cse21) (let ((.cse23 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse22 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse5 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or .cse17 (and (or .cse1 (let ((.cse24 (<= .cse32 2147483647))) (and (or .cse24 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse25 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9))) (or (and (or .cse26 (let ((.cse27 (<= .cse30 2147483647))) (and (or (not .cse27) (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse28 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse28) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or .cse27 (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse29 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 9)))))) (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= 9 (let ((.cse31 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse6 v_ArrVal_1149) .cse7 v_ArrVal_1151) .cse8 v_ArrVal_1152) .cse9 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse10)) (not .cse24))))) (or (forall ((v_ArrVal_1152 Int) (v_ArrVal_1151 Int) (v_ArrVal_1154 Int) (v_ArrVal_1144 Int) (v_ArrVal_1147 Int) (v_ArrVal_1149 Int)) (= (let ((.cse33 (store (store (store (store (store (store .cse3 .cse23 v_ArrVal_1144) .cse19 v_ArrVal_1147) .cse12 v_ArrVal_1149) .cse13 v_ArrVal_1151) .cse14 v_ArrVal_1152) .cse15 v_ArrVal_1154))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) 9)) .cse16)))))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from true [2022-11-03 02:39:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:06,042 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2022-11-03 02:39:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:39:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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 22 [2022-11-03 02:39:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:06,046 INFO L225 Difference]: With dead ends: 106 [2022-11-03 02:39:06,046 INFO L226 Difference]: Without dead ends: 104 [2022-11-03 02:39:06,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=230, Invalid=1413, Unknown=9, NotChecked=240, Total=1892 [2022-11-03 02:39:06,047 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:06,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 79 Unchecked, 0.4s Time] [2022-11-03 02:39:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-03 02:39:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2022-11-03 02:39:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 99 states have internal predecessors, (117), 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) [2022-11-03 02:39:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-11-03 02:39:06,104 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 22 [2022-11-03 02:39:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:06,104 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-11-03 02:39:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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) [2022-11-03 02:39:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-11-03 02:39:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:39:06,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:06,105 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:06,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:06,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 02:39:06,305 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1138302594, now seen corresponding path program 11 times [2022-11-03 02:39:06,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:06,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303905548] [2022-11-03 02:39:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:06,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:06,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:39:06,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95968626] [2022-11-03 02:39:06,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:39:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:06,322 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:06,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e41b7e-4898-498d-a8d2-bbcf487f7699/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-03 02:39:10,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:39:10,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:39:10,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-03 02:39:10,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:10,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:10,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:39:10,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-03 02:39:10,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:10,961 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:39:10,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 125 treesize of output 117 [2022-11-03 02:39:10,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:10,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 188 [2022-11-03 02:39:11,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:39:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,172 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:39:11,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-03 02:39:11,270 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:39:11,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 87 treesize of output 79 [2022-11-03 02:39:11,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 135 [2022-11-03 02:39:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,398 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:39:11,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-03 02:39:11,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,490 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:39:11,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-03 02:39:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:11,644 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-11-03 02:39:11,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 44 [2022-11-03 02:39:11,761 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:39:11,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 181 treesize of output 159 [2022-11-03 02:39:11,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:11,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 235 [2022-11-03 02:39:11,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 65 [2022-11-03 02:39:11,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:11,960 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-03 02:39:11,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 70 [2022-11-03 02:39:12,125 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:39:12,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 123 treesize of output 105 [2022-11-03 02:39:12,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:12,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:12,152 INFO L356 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-11-03 02:39:12,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 144 [2022-11-03 02:39:12,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:12,272 INFO L356 Elim1Store]: treesize reduction 94, result has 37.3 percent of original size [2022-11-03 02:39:12,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 122 treesize of output 95 [2022-11-03 02:39:12,999 INFO L356 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2022-11-03 02:39:13,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 199 treesize of output 215 [2022-11-03 02:39:13,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:13,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:13,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:13,684 INFO L356 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-11-03 02:39:13,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 239 [2022-11-03 02:39:13,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 47 treesize of output 1 [2022-11-03 02:39:19,810 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:39:19,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 118 [2022-11-03 02:39:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:19,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:19,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:19,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2022-11-03 02:39:19,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 31 treesize of output 23 [2022-11-03 02:39:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:19,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:33,171 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:39:58,104 WARN L234 SmtUtils]: Spent 16.24s on a formula simplification. DAG size of input: 78 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:41:38,827 WARN L234 SmtUtils]: Spent 1.43m on a formula simplification. DAG size of input: 139 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)