./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0 --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 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 --- 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-e04fb08 [2022-11-16 19:27:52,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:27:52,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:27:52,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:27:52,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:27:52,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:27:52,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:27:52,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:27:52,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:27:52,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:27:52,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:27:52,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:27:52,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:27:52,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:27:52,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:27:52,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:27:52,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:27:52,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:27:52,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:27:52,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:27:52,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:27:52,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:27:52,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:27:52,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:27:52,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:27:52,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:27:52,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:27:52,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:27:52,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:27:52,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:27:52,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:27:52,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:27:52,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:27:52,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:27:52,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:27:52,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:27:52,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:27:52,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:27:52,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:27:52,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:27:52,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:27:52,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:27:52,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:27:52,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:27:52,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:27:52,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:27:52,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:27:52,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:27:52,659 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:27:52,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:27:52,660 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:27:52,660 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:27:52,660 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:27:52,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:27:52,661 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:27:52,661 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:27:52,661 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:27:52,662 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:27:52,662 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:27:52,662 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:27:52,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:27:52,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:27:52,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:27:52,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:27:52,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:27:52,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:27:52,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:27:52,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:27:52,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:27:52,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:27:52,666 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:27:52,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:27:52,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:27:52,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:27:52,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:52,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:27:52,667 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:27:52,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:27:52,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:27:52,668 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:27:52,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:27:52,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:27:52,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:27:52,669 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_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2022-11-16 19:27:52,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:27:53,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:27:53,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:27:53,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:27:53,013 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:27:53,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-fpi/sqm.c [2022-11-16 19:27:53,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/data/49139abcd/84a95f1a0c0f48f28c0004a6bba4542e/FLAGed5d7aa68 [2022-11-16 19:27:53,648 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:27:53,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/sv-benchmarks/c/array-fpi/sqm.c [2022-11-16 19:27:53,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/data/49139abcd/84a95f1a0c0f48f28c0004a6bba4542e/FLAGed5d7aa68 [2022-11-16 19:27:54,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/data/49139abcd/84a95f1a0c0f48f28c0004a6bba4542e [2022-11-16 19:27:54,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:27:54,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:27:54,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:54,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:27:54,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:27:54,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c536255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54, skipping insertion in model container [2022-11-16 19:27:54,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:27:54,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:27:54,334 WARN L229 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_dc22d542-4593-469c-b6f2-827393d8cb56/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-16 19:27:54,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:54,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:27:54,401 WARN L229 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_dc22d542-4593-469c-b6f2-827393d8cb56/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-16 19:27:54,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:54,425 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:27:54,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54 WrapperNode [2022-11-16 19:27:54,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:54,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:54,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:27:54,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:27:54,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,477 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-16 19:27:54,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:54,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:27:54,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:27:54,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:27:54,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:27:54,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:27:54,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:27:54,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:27:54,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (1/1) ... [2022-11-16 19:27:54,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:54,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:54,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:27:54,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:27:54,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:27:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:27:54,678 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:27:54,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:27:54,948 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:27:55,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:27:55,042 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 19:27:55,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:27:55 BoogieIcfgContainer [2022-11-16 19:27:55,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:27:55,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:27:55,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:27:55,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:27:55,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:27:54" (1/3) ... [2022-11-16 19:27:55,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251f7b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:55, skipping insertion in model container [2022-11-16 19:27:55,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:54" (2/3) ... [2022-11-16 19:27:55,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251f7b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:55, skipping insertion in model container [2022-11-16 19:27:55,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:27:55" (3/3) ... [2022-11-16 19:27:55,085 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2022-11-16 19:27:55,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:27:55,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:27:55,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:27:55,208 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;@3f0dbf16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:27:55,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:27:55,221 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) [2022-11-16 19:27:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:27:55,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:55,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:55,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2022-11-16 19:27:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:55,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726813148] [2022-11-16 19:27:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:55,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:55,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:55,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236839275] [2022-11-16 19:27:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:55,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:55,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:55,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:55,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:27:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:55,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 19:27:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:55,728 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 19:27:55,730 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:55,743 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:55,756 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:55,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:27:55,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-16 19:27:55,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:27:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:56,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:27:56,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:56,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726813148] [2022-11-16 19:27:56,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:56,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236839275] [2022-11-16 19:27:56,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236839275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:56,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:56,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:27:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354667320] [2022-11-16 19:27:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:56,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:27:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:27:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:56,064 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) [2022-11-16 19:27:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:56,233 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-16 19:27:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:27:56,237 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 [2022-11-16 19:27:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:56,246 INFO L225 Difference]: With dead ends: 35 [2022-11-16 19:27:56,246 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 19:27:56,249 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 [2022-11-16 19:27:56,255 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:56,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 19 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 19:27:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-16 19:27:56,296 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) [2022-11-16 19:27:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-11-16 19:27:56,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2022-11-16 19:27:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:56,299 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-16 19:27:56,299 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) [2022-11-16 19:27:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2022-11-16 19:27:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:27:56,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:56,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:56,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 19:27:56,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1337635293, now seen corresponding path program 1 times [2022-11-16 19:27:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317428497] [2022-11-16 19:27:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:56,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:56,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276781355] [2022-11-16 19:27:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:56,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:56,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:56,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:27:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:56,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:27:56,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:56,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:27:56,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317428497] [2022-11-16 19:27:56,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276781355] [2022-11-16 19:27:56,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276781355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:56,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:56,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:27:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558472177] [2022-11-16 19:27:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:27:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:27:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:27:56,649 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) [2022-11-16 19:27:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:56,697 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-16 19:27:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:27:56,698 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 [2022-11-16 19:27:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:56,699 INFO L225 Difference]: With dead ends: 25 [2022-11-16 19:27:56,699 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 19:27:56,699 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 [2022-11-16 19:27:56,701 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 [2022-11-16 19:27:56,701 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] [2022-11-16 19:27:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 19:27:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-16 19:27:56,705 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) [2022-11-16 19:27:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-16 19:27:56,706 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2022-11-16 19:27:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:56,706 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-16 19:27:56,707 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) [2022-11-16 19:27:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-16 19:27:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:27:56,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:56,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:56,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:56,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1611921030, now seen corresponding path program 1 times [2022-11-16 19:27:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:56,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500968852] [2022-11-16 19:27:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:56,944 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:56,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98565201] [2022-11-16 19:27:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:56,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:56,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:27:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:27:57,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:57,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:57,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500968852] [2022-11-16 19:27:57,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98565201] [2022-11-16 19:27:57,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98565201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:57,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1555116596] [2022-11-16 19:27:57,120 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:27:57,121 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:57,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:57,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:57,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:57,368 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:27:57,369 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:57,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:27:57,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:27:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:27:57,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:57,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:58,087 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:27:58,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 502 treesize of output 519 [2022-11-16 19:27:58,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:58,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:27:58,369 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:58,780 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) (= |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) (<= ~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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:58,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:58,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:27:58,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-16 19:27:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037474167] [2022-11-16 19:27:58,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:27:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:27:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:27:58,782 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) [2022-11-16 19:27:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:58,892 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-16 19:27:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:27:58,893 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 [2022-11-16 19:27:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:58,893 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:27:58,893 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 19:27:58,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-16 19:27:58,895 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:58,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 19:27:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2022-11-16 19:27:58,899 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) [2022-11-16 19:27:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-16 19:27:58,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-11-16 19:27:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:58,903 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-16 19:27:58,907 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) [2022-11-16 19:27:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-16 19:27:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:27:58,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:58,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:58,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:59,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1565286172, now seen corresponding path program 1 times [2022-11-16 19:27:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:59,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038123137] [2022-11-16 19:27:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:59,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:59,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046078442] [2022-11-16 19:27:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:59,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:59,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:59,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:27:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:59,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 19:27:59,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:59,354 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 19:27:59,354 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:59,365 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:59,377 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:27:59,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:59,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-16 19:27:59,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:27:59,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:27:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:59,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 19:27:59,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:27:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:59,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 19:27:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:59,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:59,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:59,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038123137] [2022-11-16 19:27:59,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:59,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046078442] [2022-11-16 19:27:59,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046078442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:59,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [345398426] [2022-11-16 19:27:59,921 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:27:59,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:59,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:59,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:59,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:00,022 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:00,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:00,216 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:00,217 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:00,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:00,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:00,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:00,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:00,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:00,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,594 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:00,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:28:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:00,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:00,814 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:00,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:00,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:00,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:00,860 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:00,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:00,883 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:01,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '370#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:01,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:01,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:01,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 19:28:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404256445] [2022-11-16 19:28:01,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 19:28:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 19:28:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=219, Unknown=6, NotChecked=0, Total=272 [2022-11-16 19:28:01,376 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 12 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) [2022-11-16 19:28:01,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:01,605 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-16 19:28:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:28:01,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 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) Word has length 9 [2022-11-16 19:28:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:01,607 INFO L225 Difference]: With dead ends: 33 [2022-11-16 19:28:01,607 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 19:28:01,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=368, Unknown=7, NotChecked=0, Total=462 [2022-11-16 19:28:01,608 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:01,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-11-16 19:28:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 19:28:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2022-11-16 19:28:01,620 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) [2022-11-16 19:28:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-16 19:28:01,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2022-11-16 19:28:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:01,623 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-16 19:28:01,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 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) [2022-11-16 19:28:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-11-16 19:28:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:28:01,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:01,627 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:01,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:01,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -978676906, now seen corresponding path program 1 times [2022-11-16 19:28:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:01,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788319299] [2022-11-16 19:28:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:01,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:01,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:01,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847916059] [2022-11-16 19:28:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:01,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:01,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:01,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:28:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:01,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 19:28:01,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:02,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:28:02,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788319299] [2022-11-16 19:28:02,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847916059] [2022-11-16 19:28:02,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847916059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:28:02,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:28:02,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:28:02,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878004864] [2022-11-16 19:28:02,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:28:02,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:28:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:28:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:28:02,008 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) [2022-11-16 19:28:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:02,099 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-16 19:28:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:28:02,100 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 [2022-11-16 19:28:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:02,101 INFO L225 Difference]: With dead ends: 31 [2022-11-16 19:28:02,101 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 19:28:02,102 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 [2022-11-16 19:28:02,105 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:02,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:28:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 19:28:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-16 19:28:02,114 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) [2022-11-16 19:28:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-16 19:28:02,117 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2022-11-16 19:28:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:02,118 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-16 19:28:02,118 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) [2022-11-16 19:28:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-16 19:28:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:28:02,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:02,119 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:02,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:02,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:02,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1274461626, now seen corresponding path program 2 times [2022-11-16 19:28:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:02,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428114002] [2022-11-16 19:28:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:02,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:02,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002879763] [2022-11-16 19:28:02,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:02,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:02,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:28:02,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:28:02,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:28:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:02,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:02,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:02,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428114002] [2022-11-16 19:28:02,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:02,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002879763] [2022-11-16 19:28:02,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002879763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:02,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177404679] [2022-11-16 19:28:02,531 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:02,531 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:02,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:02,532 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:02,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:02,669 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:02,669 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:02,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:02,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:28:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:28:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:02,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,059 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:28:03,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 502 treesize of output 519 [2022-11-16 19:28:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,210 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:03,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:03,331 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-16 19:28:03,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 179 [2022-11-16 19:28:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:03,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:03,398 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:03,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:03,420 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:03,741 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '628#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:03,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:03,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:03,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-16 19:28:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94797955] [2022-11-16 19:28:03,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:28:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:28:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:28:03,743 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) [2022-11-16 19:28:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:03,853 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-16 19:28:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:28:03,854 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 [2022-11-16 19:28:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:03,855 INFO L225 Difference]: With dead ends: 33 [2022-11-16 19:28:03,855 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 19:28:03,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-16 19:28:03,856 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:03,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:28:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 19:28:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2022-11-16 19:28:03,860 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) [2022-11-16 19:28:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-16 19:28:03,861 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2022-11-16 19:28:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:03,861 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-16 19:28:03,861 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) [2022-11-16 19:28:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-16 19:28:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:28:03,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:03,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:03,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:04,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:04,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1361538371, now seen corresponding path program 3 times [2022-11-16 19:28:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:04,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115453851] [2022-11-16 19:28:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:04,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608569349] [2022-11-16 19:28:04,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:28:04,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:04,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:04,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:28:04,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:28:04,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:28:04,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:04,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:04,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115453851] [2022-11-16 19:28:04,267 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608569349] [2022-11-16 19:28:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608569349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:04,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064349179] [2022-11-16 19:28:04,273 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:04,274 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:04,274 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:04,274 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:04,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:04,408 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:04,408 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:04,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:04,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:28:04,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:28:04,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:04,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:04,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:04,810 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:28:04,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 510 treesize of output 521 [2022-11-16 19:28:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:05,084 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:05,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:05,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:05,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:05,172 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:28:05,173 INFO L350 Elim1Store]: Elim1 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 212 treesize of output 193 [2022-11-16 19:28:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:05,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:05,221 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:05,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:05,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:05,584 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '772#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:05,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:05,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:05,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 19:28:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859807453] [2022-11-16 19:28:05,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 19:28:05,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 19:28:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 19:28:05,586 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) [2022-11-16 19:28:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:05,741 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-16 19:28:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:28:05,742 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 [2022-11-16 19:28:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:05,742 INFO L225 Difference]: With dead ends: 37 [2022-11-16 19:28:05,742 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 19:28:05,743 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 [2022-11-16 19:28:05,743 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:05,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:28:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 19:28:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2022-11-16 19:28:05,748 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) [2022-11-16 19:28:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-16 19:28:05,749 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-11-16 19:28:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:05,749 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-16 19:28:05,749 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) [2022-11-16 19:28:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-16 19:28:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:28:05,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:05,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:05,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:05,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -746752909, now seen corresponding path program 4 times [2022-11-16 19:28:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931710901] [2022-11-16 19:28:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:06,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076503958] [2022-11-16 19:28:06,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:28:06,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:06,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:06,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:28:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:06,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 19:28:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:06,252 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 19:28:06,252 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:06,260 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:06,267 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:06,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-16 19:28:06,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:06,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:06,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:06,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:06,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 19:28:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:06,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 19:28:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:06,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:28:06,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:06,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931710901] [2022-11-16 19:28:06,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076503958] [2022-11-16 19:28:06,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076503958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1473266147] [2022-11-16 19:28:06,780 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:06,780 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:06,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:06,781 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:06,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:06,942 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:28:06,943 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:07,029 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:07,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:07,196 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:07,197 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:07,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,499 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:07,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:28:07,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:07,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,689 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:07,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:07,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,733 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:07,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:07,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:07,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:07,776 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:07,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:07,820 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:08,296 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '938#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:08,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:08,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-16 19:28:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382258442] [2022-11-16 19:28:08,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:08,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 19:28:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 19:28:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=312, Unknown=1, NotChecked=0, Total=380 [2022-11-16 19:28:08,298 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 15 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) [2022-11-16 19:28:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:08,642 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-16 19:28:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 19:28:08,643 INFO L78 Accepts]: Start accepts. Automaton has has 15 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) Word has length 11 [2022-11-16 19:28:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:08,643 INFO L225 Difference]: With dead ends: 40 [2022-11-16 19:28:08,643 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 19:28:08,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=627, Unknown=1, NotChecked=0, Total=756 [2022-11-16 19:28:08,645 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:08,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 23 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-16 19:28:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 19:28:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 19. [2022-11-16 19:28:08,650 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) [2022-11-16 19:28:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-11-16 19:28:08,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2022-11-16 19:28:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:08,651 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-16 19:28:08,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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) [2022-11-16 19:28:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-11-16 19:28:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 19:28:08,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:08,652 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:08,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:08,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:08,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 985561389, now seen corresponding path program 1 times [2022-11-16 19:28:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:08,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442662570] [2022-11-16 19:28:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:08,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:08,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370317392] [2022-11-16 19:28:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:08,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:08,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:08,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:08,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 19:28:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:09,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 19:28:09,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:09,067 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 19:28:09,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 19:28:09,072 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:09,107 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-16 19:28:09,107 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:09,156 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:09,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 49 treesize of output 66 [2022-11-16 19:28:09,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:09,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:09,225 INFO L350 Elim1Store]: Elim1 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 58 treesize of output 51 [2022-11-16 19:28:09,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 19:28:09,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 65 [2022-11-16 19:28:09,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:09,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:09,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:09,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:28:09,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:09,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-16 19:28:09,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 31 [2022-11-16 19:28:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:09,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:10,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:10,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442662570] [2022-11-16 19:28:10,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:10,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370317392] [2022-11-16 19:28:10,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370317392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:10,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [325334184] [2022-11-16 19:28:10,188 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:28:10,188 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:10,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:10,188 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:10,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:10,275 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:10,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:10,416 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:10,416 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:10,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:10,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:10,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:10,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,742 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:10,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:28:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:10,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:10,910 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:10,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:10,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:10,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:10,954 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:10,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:11,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:11,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:11,006 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:11,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:11,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:11,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1131#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:28:11,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:11,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:11,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-16 19:28:11,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008201960] [2022-11-16 19:28:11,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 19:28:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 19:28:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-16 19:28:11,638 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:11,839 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-16 19:28:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:28:11,840 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 19:28:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:11,840 INFO L225 Difference]: With dead ends: 26 [2022-11-16 19:28:11,840 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 19:28:11,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:28:11,842 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:11,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-16 19:28:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 19:28:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-16 19:28:11,849 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) [2022-11-16 19:28:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-16 19:28:11,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2022-11-16 19:28:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:11,850 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-16 19:28:11,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-16 19:28:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:28:11,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:11,851 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:11,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:12,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:12,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:12,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:12,060 INFO L85 PathProgramCache]: Analyzing trace with hash -522629517, now seen corresponding path program 5 times [2022-11-16 19:28:12,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:12,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851103596] [2022-11-16 19:28:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:12,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:12,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931847478] [2022-11-16 19:28:12,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:12,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:12,085 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:12,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:28:12,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:28:12,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:12,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:28:12,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:28:12,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:28:12,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851103596] [2022-11-16 19:28:12,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931847478] [2022-11-16 19:28:12,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931847478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:12,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094125674] [2022-11-16 19:28:12,455 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:12,455 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:12,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:12,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:12,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:12,594 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:28:12,594 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:12,682 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:12,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:12,823 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:12,824 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:12,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:12,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,117 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:13,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 546 treesize of output 515 [2022-11-16 19:28:13,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:13,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,258 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:13,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:13,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,311 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:13,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:13,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,363 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:13,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:13,412 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:13,845 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) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:13,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:13,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:13,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-16 19:28:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777982763] [2022-11-16 19:28:13,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:13,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:28:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:28:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-16 19:28:13,848 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:14,080 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-16 19:28:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 19:28:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 19:28:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:14,082 INFO L225 Difference]: With dead ends: 54 [2022-11-16 19:28:14,082 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 19:28:14,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-11-16 19:28:14,084 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:28:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 19:28:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2022-11-16 19:28:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2022-11-16 19:28:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-16 19:28:14,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-16 19:28:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:14,093 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-16 19:28:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-16 19:28:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:28:14,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:14,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:14,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 19:28:14,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1419825270, now seen corresponding path program 2 times [2022-11-16 19:28:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:14,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086146209] [2022-11-16 19:28:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:14,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:14,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465020160] [2022-11-16 19:28:14,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:14,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:28:14,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:28:14,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 19:28:14,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:14,740 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 19:28:14,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 19:28:14,774 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-11-16 19:28:14,774 INFO L350 Elim1Store]: Elim1 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 67 [2022-11-16 19:28:14,786 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:14,812 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:14,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:14,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 25 treesize of output 45 [2022-11-16 19:28:14,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:14,863 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 3 [2022-11-16 19:28:14,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:14,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 117 [2022-11-16 19:28:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:14,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:14,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:14,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:14,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:14,948 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:15,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 19:28:15,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 146 [2022-11-16 19:28:15,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:15,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,161 INFO L350 Elim1Store]: Elim1 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 130 treesize of output 212 [2022-11-16 19:28:15,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,183 INFO L350 Elim1Store]: Elim1 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 194 treesize of output 106 [2022-11-16 19:28:15,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:15,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:15,267 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:28:15,268 INFO L350 Elim1Store]: Elim1 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 56 treesize of output 56 [2022-11-16 19:28:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:15,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:18,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:18,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086146209] [2022-11-16 19:28:18,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:18,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465020160] [2022-11-16 19:28:18,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465020160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:18,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1133493439] [2022-11-16 19:28:18,425 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:28:18,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:18,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:18,426 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:18,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:18,527 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:18,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:18,672 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:28:18,672 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:18,813 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:18,813 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:18,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:18,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:28:19,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:19,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:19,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,134 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-16 19:28:19,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 508 treesize of output 516 [2022-11-16 19:28:19,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:19,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,347 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:19,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:19,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:19,483 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-16 19:28:19,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 179 [2022-11-16 19:28:19,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:19,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:19,541 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:19,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:19,724 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:20,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1536#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:28:20,810 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:20,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:20,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-16 19:28:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094079381] [2022-11-16 19:28:20,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 19:28:20,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 19:28:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-11-16 19:28:20,812 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2022-11-16 19:28:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:21,352 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-11-16 19:28:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 19:28:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 14 [2022-11-16 19:28:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:21,355 INFO L225 Difference]: With dead ends: 37 [2022-11-16 19:28:21,355 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 19:28:21,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-16 19:28:21,356 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:21,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-11-16 19:28:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 19:28:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-16 19:28:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-16 19:28:21,368 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2022-11-16 19:28:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:21,368 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-16 19:28:21,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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) [2022-11-16 19:28:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-16 19:28:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:28:21,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:21,369 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:21,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:21,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 916648218, now seen corresponding path program 6 times [2022-11-16 19:28:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:21,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827138213] [2022-11-16 19:28:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:21,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:21,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032004439] [2022-11-16 19:28:21,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:28:21,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:21,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:21,631 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:21,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 19:28:21,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:28:21,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:21,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:28:21,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:21,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:21,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:21,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827138213] [2022-11-16 19:28:21,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032004439] [2022-11-16 19:28:21,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032004439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769569004] [2022-11-16 19:28:21,889 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:21,889 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:21,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:21,890 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:21,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:22,023 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:28:22,023 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:22,107 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:22,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:22,254 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:22,254 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:22,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,523 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:22,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:28:22,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:22,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,657 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:22,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,800 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-16 19:28:22,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 184 [2022-11-16 19:28:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:22,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:22,860 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:22,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:22,877 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:23,190 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1746#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:23,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:23,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:23,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-16 19:28:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735270712] [2022-11-16 19:28:23,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 19:28:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 19:28:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-16 19:28:23,192 INFO L87 Difference]: Start difference. First operand 28 states and 35 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) [2022-11-16 19:28:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:23,525 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2022-11-16 19:28:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 19:28:23,525 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 14 [2022-11-16 19:28:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:23,526 INFO L225 Difference]: With dead ends: 71 [2022-11-16 19:28:23,526 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 19:28:23,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-16 19:28:23,527 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:23,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 47 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:28:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 19:28:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 39. [2022-11-16 19:28:23,548 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) [2022-11-16 19:28:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-16 19:28:23,548 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2022-11-16 19:28:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:23,549 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-16 19:28:23,549 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) [2022-11-16 19:28:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-16 19:28:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:28:23,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:23,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:23,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:23,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:23,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1710382253, now seen corresponding path program 7 times [2022-11-16 19:28:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:23,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24949173] [2022-11-16 19:28:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:23,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:23,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310822300] [2022-11-16 19:28:23,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:28:23,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:23,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:23,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:23,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:28:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:25,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 19:28:25,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:25,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-16 19:28:25,068 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:25,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:25,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:25,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:25,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 19:28:25,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-16 19:28:25,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,241 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:25,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 22 [2022-11-16 19:28:25,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-16 19:28:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,306 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:25,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 22 [2022-11-16 19:28:25,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-16 19:28:25,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,367 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:25,378 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:28:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 19:28:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:25,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:28:26,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:26,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24949173] [2022-11-16 19:28:26,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:26,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310822300] [2022-11-16 19:28:26,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310822300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:26,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435284447] [2022-11-16 19:28:26,195 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:28:26,195 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:26,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:26,196 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:26,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:26,309 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:26,309 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:26,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:28:26,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:26,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,621 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:26,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:28:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:26,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,734 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:26,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:26,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,854 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-16 19:28:26,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 184 [2022-11-16 19:28:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:26,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:26,909 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:26,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:26,927 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:27,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2043#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:27,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:27,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:27,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2022-11-16 19:28:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071113294] [2022-11-16 19:28:27,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 19:28:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 19:28:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=527, Unknown=1, NotChecked=0, Total=650 [2022-11-16 19:28:27,301 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2022-11-16 19:28:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:27,829 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-11-16 19:28:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 19:28:27,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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 15 [2022-11-16 19:28:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:27,830 INFO L225 Difference]: With dead ends: 64 [2022-11-16 19:28:27,830 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 19:28:27,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=932, Unknown=1, NotChecked=0, Total=1122 [2022-11-16 19:28:27,832 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:27,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 18 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 79 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2022-11-16 19:28:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 19:28:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2022-11-16 19:28:27,848 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) [2022-11-16 19:28:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-16 19:28:27,849 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2022-11-16 19:28:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:27,849 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-16 19:28:27,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2022-11-16 19:28:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-16 19:28:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:28:27,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:27,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:27,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:28,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 19:28:28,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash 724259981, now seen corresponding path program 3 times [2022-11-16 19:28:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:28,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947473228] [2022-11-16 19:28:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:28,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:28,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:28,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082564107] [2022-11-16 19:28:28,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:28:28,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:28,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:28,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:28,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 19:28:28,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:28:28,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:28,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 19:28:28,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:28,651 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 19:28:28,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 19:28:28,656 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:28,686 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-16 19:28:28,686 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:28,714 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:28,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 66 treesize of output 83 [2022-11-16 19:28:28,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 41 [2022-11-16 19:28:28,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:28,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 19:28:28,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:28,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 79 [2022-11-16 19:28:28,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:28,997 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 119 [2022-11-16 19:28:29,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 19 [2022-11-16 19:28:29,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:29,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:28:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,080 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:29,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2022-11-16 19:28:29,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,147 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 20 [2022-11-16 19:28:29,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-16 19:28:29,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2022-11-16 19:28:29,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,279 INFO L350 Elim1Store]: Elim1 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 70 treesize of output 135 [2022-11-16 19:28:29,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,313 INFO L350 Elim1Store]: Elim1 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 96 treesize of output 40 [2022-11-16 19:28:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:29,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 19:28:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:29,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:40,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947473228] [2022-11-16 19:28:40,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082564107] [2022-11-16 19:28:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082564107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [950615805] [2022-11-16 19:28:40,135 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:28:40,135 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:40,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:40,135 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:40,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:40,267 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:40,267 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:40,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:28:40,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:40,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:28:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,639 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:28:40,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 508 treesize of output 521 [2022-11-16 19:28:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,803 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:40,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:40,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:40,933 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-16 19:28:40,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 179 [2022-11-16 19:28:40,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:40,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:40,999 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:41,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:41,144 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:41,814 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2349#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:28:41,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:41,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:41,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 19:28:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177351197] [2022-11-16 19:28:41,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 19:28:41,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 19:28:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=754, Unknown=1, NotChecked=0, Total=870 [2022-11-16 19:28:41,817 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:42,373 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-11-16 19:28:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 19:28:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 19:28:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:42,376 INFO L225 Difference]: With dead ends: 71 [2022-11-16 19:28:42,377 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 19:28:42,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=158, Invalid=963, Unknown=1, NotChecked=0, Total=1122 [2022-11-16 19:28:42,378 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:42,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-11-16 19:28:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 19:28:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-16 19:28:42,404 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) [2022-11-16 19:28:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2022-11-16 19:28:42,405 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 16 [2022-11-16 19:28:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:42,406 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2022-11-16 19:28:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2022-11-16 19:28:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:28:42,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:42,407 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:42,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 19:28:42,613 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1181831571, now seen corresponding path program 4 times [2022-11-16 19:28:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:42,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367162651] [2022-11-16 19:28:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:42,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:42,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466173069] [2022-11-16 19:28:42,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:28:42,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:42,637 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:42,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 19:28:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:42,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 19:28:42,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:42,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:42,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:28:42,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:28:42,966 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:42,972 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 19:28:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 19:28:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,128 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-16 19:28:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:43,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:43,199 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:28:43,200 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 60 [2022-11-16 19:28:43,506 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-16 19:28:43,506 INFO L350 Elim1Store]: Elim1 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 83 treesize of output 43 [2022-11-16 19:28:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:43,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:54,028 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 139 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:28:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:54,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:54,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367162651] [2022-11-16 19:28:54,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466173069] [2022-11-16 19:28:54,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466173069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [710100255] [2022-11-16 19:28:54,050 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:28:54,051 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:54,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:54,051 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:54,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:54,144 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:28:54,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:28:54,283 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:28:54,283 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:54,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:28:54,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:28:54,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,566 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:28:54,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 546 treesize of output 515 [2022-11-16 19:28:54,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:28:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,705 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:54,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:28:54,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,745 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:54,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:54,794 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:54,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:28:54,872 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:55,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2682#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:28:55,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:55,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:55,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-16 19:28:55,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576033155] [2022-11-16 19:28:55,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:55,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 19:28:55,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 19:28:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:28:55,876 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2022-11-16 19:28:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:57,100 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2022-11-16 19:28:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 19:28:57,101 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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 17 [2022-11-16 19:28:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:57,102 INFO L225 Difference]: With dead ends: 70 [2022-11-16 19:28:57,102 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 19:28:57,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-11-16 19:28:57,103 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:57,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 35 Unchecked, 0.4s Time] [2022-11-16 19:28:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 19:28:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-16 19:28:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:28:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-16 19:28:57,129 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-16 19:28:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:57,130 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-16 19:28:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2022-11-16 19:28:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-16 19:28:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:28:57,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:57,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:57,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:57,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1499444630, now seen corresponding path program 5 times [2022-11-16 19:28:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:57,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995409623] [2022-11-16 19:28:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:57,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:57,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342573519] [2022-11-16 19:28:57,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:57,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:57,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:57,362 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:57,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 19:28:58,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:28:58,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:58,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 19:28:58,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:58,259 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 19:28:58,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 19:28:58,265 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,295 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-16 19:28:58,295 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,310 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 62 treesize of output 79 [2022-11-16 19:28:58,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:58,389 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 30 [2022-11-16 19:28:58,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:58,416 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:58,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:58,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:28:58,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 19:28:58,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:28:58,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,622 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 26 [2022-11-16 19:28:58,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:28:58,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,716 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,726 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:28:58,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 101 [2022-11-16 19:28:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,818 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:28:58,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 137 [2022-11-16 19:28:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,983 INFO L350 Elim1Store]: Elim1 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 130 treesize of output 212 [2022-11-16 19:28:58,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,005 INFO L350 Elim1Store]: Elim1 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 213 treesize of output 123 [2022-11-16 19:28:59,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 110 [2022-11-16 19:28:59,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,131 INFO L350 Elim1Store]: Elim1 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 101 treesize of output 174 [2022-11-16 19:28:59,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-16 19:28:59,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 80 [2022-11-16 19:28:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:59,360 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-16 19:28:59,361 INFO L350 Elim1Store]: Elim1 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 76 treesize of output 117 [2022-11-16 19:28:59,396 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:29:00,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2022-11-16 19:29:00,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:00,028 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:29:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:00,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:29:10,637 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:29:43,060 WARN L233 SmtUtils]: Spent 22.65s on a formula simplification. DAG size of input: 67 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:30:06,323 WARN L233 SmtUtils]: Spent 15.56s on a formula simplification. DAG size of input: 74 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:31:23,993 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 134 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:31:39,190 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:31:56,492 WARN L233 SmtUtils]: Spent 15.27s on a formula simplification. DAG size of input: 169 DAG size of output: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:33:00,775 WARN L233 SmtUtils]: Spent 52.70s on a formula simplification. DAG size of input: 199 DAG size of output: 180 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:33:00,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:00,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:00,855 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 19:33:00,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 343 treesize of output 1 [2022-11-16 19:33:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:33:00,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:33:00,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995409623] [2022-11-16 19:33:00,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:33:00,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342573519] [2022-11-16 19:33:00,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342573519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:33:00,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [340871249] [2022-11-16 19:33:00,862 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:33:00,862 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:33:00,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:33:00,863 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:33:00,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:33:01,009 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:33:01,009 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:33:01,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:33:01,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:33:01,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:33:01,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:01,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,338 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:33:01,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 508 treesize of output 521 [2022-11-16 19:33:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:33:01,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,524 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:33:01,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:33:01,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:01,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:01,643 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-16 19:33:01,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 184 [2022-11-16 19:33:01,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:33:01,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:33:01,696 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:33:01,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:33:01,860 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:33:04,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3019#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:33:04,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:33:04,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:33:04,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-16 19:33:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864497082] [2022-11-16 19:33:04,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:33:04,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 19:33:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:33:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 19:33:04,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1001, Unknown=15, NotChecked=0, Total=1190 [2022-11-16 19:33:04,815 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:33:28,650 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 270 DAG size of output: 123 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:33:51,821 WARN L233 SmtUtils]: Spent 15.13s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:34:05,548 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:34:34,115 WARN L233 SmtUtils]: Spent 15.32s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:34:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:45,188 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-16 19:34:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 19:34:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 19:34:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:45,190 INFO L225 Difference]: With dead ends: 95 [2022-11-16 19:34:45,190 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 19:34:45,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 339.2s TimeCoverageRelationStatistics Valid=352, Invalid=2173, Unknown=25, NotChecked=0, Total=2550 [2022-11-16 19:34:45,191 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:45,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 183 Unchecked, 0.1s Time] [2022-11-16 19:34:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 19:34:45,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2022-11-16 19:34:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 59 states have internal predecessors, (83), 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) [2022-11-16 19:34:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-11-16 19:34:45,217 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 18 [2022-11-16 19:34:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:45,218 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-11-16 19:34:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:34:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-11-16 19:34:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 19:34:45,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:45,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:45,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 19:34:45,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 19:34:45,427 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:34:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1481457124, now seen corresponding path program 6 times [2022-11-16 19:34:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:45,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979029259] [2022-11-16 19:34:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:45,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:34:45,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043993400] [2022-11-16 19:34:45,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:34:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:34:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:34:45,447 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:34:45,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 19:34:45,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:34:45,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:34:45,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 19:34:45,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:34:45,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:34:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:34:45,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:34:45,876 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:34:45,882 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:34:45,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 19:34:45,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 19:34:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:45,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-16 19:34:46,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 153 [2022-11-16 19:34:46,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:46,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,108 INFO L350 Elim1Store]: Elim1 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 133 treesize of output 215 [2022-11-16 19:34:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:46,216 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:34:46,216 INFO L350 Elim1Store]: Elim1 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 74 treesize of output 60 [2022-11-16 19:34:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:34:46,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:34:46,278 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:34:46,279 INFO L350 Elim1Store]: Elim1 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 91 treesize of output 74 [2022-11-16 19:34:46,592 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-16 19:34:46,593 INFO L350 Elim1Store]: Elim1 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 80 treesize of output 44 [2022-11-16 19:34:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:46,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:35:34,876 WARN L233 SmtUtils]: Spent 16.57s on a formula simplification. DAG size of input: 169 DAG size of output: 135 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:35:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:34,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979029259] [2022-11-16 19:35:34,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:35:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043993400] [2022-11-16 19:35:34,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043993400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:35:34,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570051785] [2022-11-16 19:35:34,893 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:35:34,893 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:35:34,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:35:34,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:35:34,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:35:35,024 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:35:35,025 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:35,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:35:35,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:35:35,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:35:35,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,298 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:35:35,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:35:35,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:35:35,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,412 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:35,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:35:35,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,531 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-16 19:35:35,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 148 treesize of output 179 [2022-11-16 19:35:35,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:35,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:35,595 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:35,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:35:35,709 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:35:37,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3451#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:35:37,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:35:37,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:35:37,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-16 19:35:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308422883] [2022-11-16 19:35:37,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:35:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 19:35:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:37,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 19:35:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=871, Unknown=5, NotChecked=0, Total=992 [2022-11-16 19:35:37,940 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2022-11-16 19:35:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:39,751 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2022-11-16 19:35:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 19:35:39,751 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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 [2022-11-16 19:35:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:39,752 INFO L225 Difference]: With dead ends: 90 [2022-11-16 19:35:39,752 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 19:35:39,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=170, Invalid=1157, Unknown=5, NotChecked=0, Total=1332 [2022-11-16 19:35:39,754 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:39,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-11-16 19:35:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 19:35:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-11-16 19:35:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 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) [2022-11-16 19:35:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2022-11-16 19:35:39,794 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 19 [2022-11-16 19:35:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:39,795 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2022-11-16 19:35:39,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2022-11-16 19:35:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2022-11-16 19:35:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 19:35:39,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:39,796 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:39,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 19:35:40,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 19:35:40,003 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:35:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1715181741, now seen corresponding path program 8 times [2022-11-16 19:35:40,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567901052] [2022-11-16 19:35:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:40,045 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:35:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082534504] [2022-11-16 19:35:40,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:35:40,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:35:40,053 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:35:40,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 19:35:41,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:35:41,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:35:41,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:35:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:35:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:35:41,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:35:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:35:41,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567901052] [2022-11-16 19:35:41,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:35:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082534504] [2022-11-16 19:35:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082534504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:35:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [946009770] [2022-11-16 19:35:41,694 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:35:41,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:35:41,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:35:41,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:35:41,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:35:41,779 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:35:41,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:35:41,901 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:35:41,901 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:42,036 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:35:42,036 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:42,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:35:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,277 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:35:42,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 546 treesize of output 515 [2022-11-16 19:35:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:35:42,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,421 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:42,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:35:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,463 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:42,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:35:42,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:42,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:42,511 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:42,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:35:42,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:35:43,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3853#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:35:43,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:35:43,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:35:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-16 19:35:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30858117] [2022-11-16 19:35:43,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:35:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 19:35:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 19:35:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-16 19:35:43,077 INFO L87 Difference]: Start difference. First operand 67 states and 90 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) [2022-11-16 19:35:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:43,618 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2022-11-16 19:35:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:35:43,618 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 [2022-11-16 19:35:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:43,619 INFO L225 Difference]: With dead ends: 139 [2022-11-16 19:35:43,619 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 19:35:43,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 19:35:43,621 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 85 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:43,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 61 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:35:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 19:35:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2022-11-16 19:35:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 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) [2022-11-16 19:35:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2022-11-16 19:35:43,673 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 19 [2022-11-16 19:35:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:43,674 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2022-11-16 19:35:43,674 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) [2022-11-16 19:35:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2022-11-16 19:35:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:35:43,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:43,675 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:43,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 19:35:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 19:35:43,877 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:35:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash -394448710, now seen corresponding path program 9 times [2022-11-16 19:35:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:43,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881750366] [2022-11-16 19:35:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:43,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:35:43,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071854038] [2022-11-16 19:35:43,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:35:43,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:35:43,918 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:35:43,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 19:35:44,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:35:44,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:35:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:35:44,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:35:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 19:35:44,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:35:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 19:35:44,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:35:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881750366] [2022-11-16 19:35:44,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:35:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071854038] [2022-11-16 19:35:44,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071854038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:35:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474615596] [2022-11-16 19:35:44,308 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:35:44,308 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:35:44,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:35:44,309 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:35:44,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:35:44,449 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:35:44,449 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:44,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:35:44,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:35:44,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:35:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:44,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:44,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,726 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-16 19:35:44,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 508 treesize of output 516 [2022-11-16 19:35:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:35:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:44,927 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:44,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:35:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:44,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:44,993 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:35:44,994 INFO L350 Elim1Store]: Elim1 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 212 treesize of output 193 [2022-11-16 19:35:45,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:45,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:45,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:45,034 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:35:45,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:35:45,048 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:35:45,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4355#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:35:45,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:35:45,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:35:45,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-16 19:35:45,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219917846] [2022-11-16 19:35:45,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:35:45,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:35:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:35:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:35:45,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2022-11-16 19:35:45,430 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2022-11-16 19:35:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:35:46,239 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2022-11-16 19:35:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 19:35:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 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 20 [2022-11-16 19:35:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:35:46,241 INFO L225 Difference]: With dead ends: 164 [2022-11-16 19:35:46,241 INFO L226 Difference]: Without dead ends: 152 [2022-11-16 19:35:46,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 19:35:46,243 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 165 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:35:46,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 94 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:35:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-16 19:35:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 80. [2022-11-16 19:35:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 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) [2022-11-16 19:35:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-11-16 19:35:46,277 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 20 [2022-11-16 19:35:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:35:46,277 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-11-16 19:35:46,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2022-11-16 19:35:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-11-16 19:35:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:35:46,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:35:46,278 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:35:46,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 19:35:46,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:46,483 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:35:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:35:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 51791853, now seen corresponding path program 7 times [2022-11-16 19:35:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:35:46,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443267466] [2022-11-16 19:35:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:35:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:35:46,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:35:46,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201330254] [2022-11-16 19:35:46,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:35:46,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:35:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:35:46,505 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:35:46,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 19:35:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:35:48,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 19:35:48,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:35:48,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:35:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:35:48,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:35:48,199 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:48,205 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:48,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:35:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,238 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:48,254 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:35:48,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:35:48,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:35:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,350 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:35:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:35:48,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:35:48,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 137 [2022-11-16 19:35:48,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:35:48,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,514 INFO L350 Elim1Store]: Elim1 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 130 treesize of output 212 [2022-11-16 19:35:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,535 INFO L350 Elim1Store]: Elim1 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 215 treesize of output 103 [2022-11-16 19:35:48,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-16 19:35:48,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 19:35:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-16 19:35:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:35:48,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 19:35:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:35:49,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:36:31,673 WARN L233 SmtUtils]: Spent 12.95s on a formula simplification. DAG size of input: 120 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:37:26,369 WARN L233 SmtUtils]: Spent 25.49s on a formula simplification. DAG size of input: 146 DAG size of output: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:37:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:37:26,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:37:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443267466] [2022-11-16 19:37:26,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:37:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201330254] [2022-11-16 19:37:26,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201330254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:37:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53375117] [2022-11-16 19:37:26,383 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:37:26,383 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:37:26,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:37:26,384 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:37:26,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:37:26,517 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-16 19:37:26,517 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:26,645 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:37:26,646 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:26,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:37:26,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:37:26,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:26,940 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-16 19:37:26,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 510 treesize of output 521 [2022-11-16 19:37:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:37:27,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:27,137 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:37:27,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:37:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:27,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:27,207 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:37:27,207 INFO L350 Elim1Store]: Elim1 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 212 treesize of output 193 [2022-11-16 19:37:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:27,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:27,247 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:37:27,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:37:27,368 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:37:32,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4934#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:37:32,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:37:32,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:37:32,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2022-11-16 19:37:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320092060] [2022-11-16 19:37:32,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:37:32,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 19:37:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:37:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 19:37:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1283, Unknown=14, NotChecked=0, Total=1482 [2022-11-16 19:37:32,345 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:37:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:37:46,994 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2022-11-16 19:37:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 19:37:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 19:37:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:37:46,996 INFO L225 Difference]: With dead ends: 128 [2022-11-16 19:37:46,996 INFO L226 Difference]: Without dead ends: 126 [2022-11-16 19:37:46,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 115.3s TimeCoverageRelationStatistics Valid=248, Invalid=1627, Unknown=17, NotChecked=0, Total=1892 [2022-11-16 19:37:46,997 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:37:46,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 75 Unchecked, 0.2s Time] [2022-11-16 19:37:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-16 19:37:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 85. [2022-11-16 19:37:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 84 states have internal predecessors, (110), 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) [2022-11-16 19:37:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2022-11-16 19:37:47,048 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 20 [2022-11-16 19:37:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:37:47,048 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2022-11-16 19:37:47,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:37:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2022-11-16 19:37:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:37:47,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:37:47,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:37:47,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 19:37:47,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:37:47,257 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:37:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:37:47,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1994729357, now seen corresponding path program 8 times [2022-11-16 19:37:47,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:37:47,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481665877] [2022-11-16 19:37:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:37:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:37:47,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:37:47,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273460757] [2022-11-16 19:37:47,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:37:47,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:37:47,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:37:47,278 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:37:47,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 19:37:48,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:37:48,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:37:48,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 19:37:48,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:37:48,455 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 19:37:48,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 19:37:48,488 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-16 19:37:48,488 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:48,497 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:48,516 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:48,557 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:37:48,567 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:48,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2022-11-16 19:37:48,598 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:37:48,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:37:48,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 19:37:48,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2022-11-16 19:37:48,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,736 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:37:48,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,769 INFO L350 Elim1Store]: Elim1 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 92 treesize of output 38 [2022-11-16 19:37:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 19:37:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:48,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 19:37:49,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,067 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-16 19:37:49,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:49,150 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:37:49,151 INFO L350 Elim1Store]: Elim1 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 68 treesize of output 58 [2022-11-16 19:37:49,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:37:49,249 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:37:49,250 INFO L350 Elim1Store]: Elim1 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 93 treesize of output 74 [2022-11-16 19:37:49,364 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 19:37:49,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 103 [2022-11-16 19:37:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:49,391 INFO L321 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-11-16 19:37:49,391 INFO L350 Elim1Store]: Elim1 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 90 treesize of output 142 [2022-11-16 19:37:49,427 INFO L350 Elim1Store]: Elim1 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 72 treesize of output 14 [2022-11-16 19:37:50,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 130 [2022-11-16 19:37:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:50,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:37:50,079 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 26 [2022-11-16 19:37:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:37:50,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:37:52,621 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0 1) c_~N~0) (= (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse2) 9)))) (forall ((v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= (select (store .cse1 (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse2) 9) (<= 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 [2022-11-16 19:37:54,781 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (<= .cse11 2147483647)) (.cse10 (* .cse11 8))) (let ((.cse2 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse5 (not .cse0)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .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 .cse5 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store .cse1 .cse6 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= 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 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |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 .cse1 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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)))) .cse0) (or .cse5 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store .cse1 .cse6 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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))))))))) is different from false [2022-11-16 19:37:57,658 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse34 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse35 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse1 (<= .cse35 2147483647)) (.cse32 (* .cse35 8)) (.cse33 (* .cse34 8)) (.cse17 (<= .cse34 2147483647)) (.cse31 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (<= .cse31 2147483647)) (.cse14 (not .cse17)) (.cse3 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse8 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (not .cse1)) (.cse13 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse21 (* 8 .cse31))) (and (or (not .cse0) (let ((.cse9 (+ 2 (select .cse20 (+ .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse21))))) (and (or .cse1 (let ((.cse2 (store .cse7 .cse8 .cse9))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |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 .cse2 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |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| .cse6)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0) (= 9 (select (store (store .cse2 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4)))))))) (or .cse10 (let ((.cse12 (store .cse7 .cse19 .cse9))) (and (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11)) (= (select (store (store .cse12 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4) 9) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11 1) c_~N~0)))) .cse14) (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store .cse12 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4)) (<= 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)))) .cse14) (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store .cse12 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4)) (<= 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)))) .cse17) (or .cse17 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (= (select (store (store .cse12 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4) 9) (< |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 .cse0 (let ((.cse27 (+ (select .cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse21)) (select .cse20 (+ (- 34359738368) .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or (let ((.cse22 (store .cse7 .cse8 .cse27))) (and (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse23 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse22 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23 1) c_~N~0)))) .cse14) (or .cse14 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse24 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse22 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4) 9) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24 1) c_~N~0))))) (or .cse17 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse25 (* |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 .cse22 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25 1) c_~N~0))))) (or .cse17 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse26 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse22 .cse3 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26 1) c_~N~0))))))) .cse1) (or .cse10 (let ((.cse28 (store .cse7 .cse19 .cse27))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse29 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store .cse28 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse4)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse29)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse29 1) c_~N~0)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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 .cse28 .cse13 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse4) 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)))))))))))))) is different from false [2022-11-16 19:38:02,912 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse57 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse58 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse59 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse53 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (<= .cse59 2147483647)) (.cse54 (* .cse59 8)) (.cse28 (<= .cse58 2147483647)) (.cse55 (* .cse58 8)) (.cse21 (<= .cse57 2147483647)) (.cse56 (* 8 .cse57))) (let ((.cse2 (+ .cse56 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse19 (not .cse21)) (.cse7 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse27 (not .cse28)) (.cse8 (+ .cse54 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ .cse54 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse15 (not .cse14)) (.cse17 (+ .cse56 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse25 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (+ .cse54 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse33 (+ .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse35 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse34 (* 8 .cse53)) (.cse0 (<= .cse53 2147483647))) (and (or (not .cse0) (let ((.cse9 (select .cse35 (+ .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse10 (select .cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34)))) (let ((.cse13 (+ 2 .cse9 .cse10))) (and (or (let ((.cse1 (let ((.cse6 (store .cse11 .cse12 .cse13))) (store .cse6 .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse9 4 .cse10))))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .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)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |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| .cse5)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (= 9 (select (store (store .cse1 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0)))))) .cse14) (or .cse15 (let ((.cse24 (store .cse11 .cse33 .cse13))) (let ((.cse26 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24) |c_ULTIMATE.start_main_~b~0#1.base|) .cse32) .cse9 4 .cse10))) (and (or (let ((.cse16 (store .cse24 .cse25 .cse26))) (and (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store .cse16 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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)))) .cse19) (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store .cse16 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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)))) .cse21) (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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 .cse16 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= 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)))) .cse21) (or .cse19 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse23 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse16 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23 1) c_~N~0))))))) .cse27) (or .cse28 (let ((.cse29 (store .cse24 .cse7 .cse26))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse30 (* |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 .cse29 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30 1) c_~N~0)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse31 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse29 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse31)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse31 1) c_~N~0))))))))))))))) (or (let ((.cse46 (select .cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse34))) (.cse47 (select .cse35 (+ (- 34359738368) .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse48 (+ .cse46 .cse47 2))) (and (or .cse14 (let ((.cse41 (store .cse11 .cse12 .cse48))) (let ((.cse42 (+ .cse46 .cse47 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) 4))) (and (or .cse28 (let ((.cse36 (store .cse41 .cse7 .cse42))) (and (or .cse19 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse37 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse36 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= 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_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse38 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse36 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38 1) c_~N~0)))) .cse21) (or (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse39 (* |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 .cse36 .cse2 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse39)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse39 1) c_~N~0)))) .cse21) (or .cse19 (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse40 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse36 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40 1) c_~N~0)))))))) (or .cse27 (let ((.cse43 (store .cse41 .cse25 .cse42))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse44 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse43 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse44)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse44 1) c_~N~0)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse45 (* |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| .cse45)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= 9 (select (store (store .cse43 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse45 1) c_~N~0))))))))))) (or .cse15 (let ((.cse49 (let ((.cse52 (store .cse11 .cse33 .cse48))) (store .cse52 .cse25 (+ .cse46 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52) |c_ULTIMATE.start_main_~b~0#1.base|) .cse32) .cse47 4))))) (and (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse50 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse49 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse50)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse50 1) c_~N~0)))) (forall ((v_ArrVal_1085 Int) (v_ArrVal_1087 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse51 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store .cse49 .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse51)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse51 1) c_~N~0)))))))))) .cse0))))) is different from false [2022-11-16 19:38:11,192 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:38:25,065 WARN L233 SmtUtils]: Spent 9.91s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:39:16,839 WARN L233 SmtUtils]: Spent 43.09s on a formula simplification. DAG size of input: 192 DAG size of output: 170 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:39:27,720 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (or (<= c_~N~0 .cse0) (let ((.cse94 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse74 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse95 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse89 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse37 (<= .cse95 2147483647)) (.cse91 (* (mod .cse0 4294967296) 8)) (.cse92 (* 8 .cse95)) (.cse93 (* .cse74 8)) (.cse47 (<= .cse94 2147483647)) (.cse90 (* .cse94 8))) (let ((.cse46 (+ .cse90 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (not .cse47)) (.cse26 (+ .cse93 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse27 (+ .cse92 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse35 (+ (- 34359738368) .cse91 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse93 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse92 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (+ .cse91 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) (.cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse38 (not .cse37)) (.cse12 (+ .cse90 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse48 (* 8 .cse89)) (.cse49 (<= .cse89 2147483647))) (and (or (let ((.cse13 (+ (select .cse11 (+ (- 34359738368) .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse1 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store (let ((.cse10 (store (store (store (store .cse11 .cse12 .cse13) .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (store .cse8 .cse9 (+ 2 .cse4 .cse7)))) (store .cse2 .cse3 (+ .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse7))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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 (let ((.cse25 (store .cse11 .cse46 .cse13))) (and (or (and (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse28 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse24 (store (store (store .cse25 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse20 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse19 (store .cse23 .cse9 (+ .cse20 .cse21 2)))) (store .cse19 .cse3 (+ .cse20 .cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3) 9) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28)) (< |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_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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 (let ((.cse34 (store (store (store .cse25 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse29 (store .cse33 .cse9 (+ .cse30 2 .cse32)))) (store .cse29 .cse3 (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse32 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 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))))) .cse37) (or .cse38 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse39 (* |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| .cse39)) (= 9 (select (store (store (let ((.cse45 (store (store (store .cse25 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse41 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse45))) (let ((.cse44 (select .cse41 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse42 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse43 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse40 (store .cse44 .cse9 (+ 2 .cse42 .cse43)))) (store .cse40 .cse3 (+ (select (select (store .cse41 |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse42 .cse43))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse39 1) c_~N~0))))))) .cse47))) .cse49) (or (let ((.cse56 (+ 2 (select .cse11 (+ .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse57 (* |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 (let ((.cse55 (store (store (store (store .cse11 .cse46 .cse56) .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse55))) (let ((.cse54 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse51 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse53 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse50 (store .cse54 .cse9 (+ .cse51 2 .cse53)))) (store .cse50 .cse3 (+ .cse51 (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| .cse50) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse53 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse57)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse57 1) c_~N~0)))) .cse47) (or .cse1 (let ((.cse64 (store .cse11 .cse12 .cse56))) (and (or (let ((.cse66 (<= .cse74 2147483647))) (and (or (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse65 (* |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 (let ((.cse63 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse63))) (let ((.cse62 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse60 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse61 (select .cse62 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse58 (store .cse62 .cse9 (+ .cse60 2 .cse61)))) (store .cse58 .cse3 (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse58) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse60 .cse61 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse65)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse65 1) c_~N~0)))) (not .cse66)) (or .cse66 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse73 (* |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 (let ((.cse72 (store (store (store .cse64 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse69 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse72))) (let ((.cse71 (select .cse69 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse68 (select .cse71 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse70 (select .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse67 (store .cse71 .cse9 (+ .cse68 2 .cse70)))) (store .cse67 .cse3 (+ .cse68 (select (select (store .cse69 |c_ULTIMATE.start_main_~a~0#1.base| .cse67) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse70))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse73)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse73 1) c_~N~0))))))) .cse37) (or (and (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse81 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse80 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse76 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse80))) (let ((.cse79 (select .cse76 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse77 (select .cse79 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse78 (select .cse80 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse75 (store .cse79 .cse9 (+ 2 .cse77 .cse78)))) (store .cse75 .cse3 (+ (select (select (store .cse76 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse77 4 .cse78))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse81)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse81 1) c_~N~0)))) (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse82 (* |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| .cse82)) (= 9 (select (store (store (let ((.cse88 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse86 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse88))) (let ((.cse87 (select .cse86 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse84 (select .cse88 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse85 (select .cse87 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse83 (store .cse87 .cse9 (+ .cse84 2 .cse85)))) (store .cse83 .cse3 (+ .cse84 .cse85 4 (select (select (store .cse86 |c_ULTIMATE.start_main_~a~0#1.base| .cse83) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse82 1) c_~N~0))))) .cse38)))))) (not .cse49)))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) c_~N~0))) is different from true [2022-11-16 19:39:27,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:27,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:27,777 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 19:39:27,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1133 treesize of output 1 [2022-11-16 19:39:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-11-16 19:39:27,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:39:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481665877] [2022-11-16 19:39:27,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:39:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273460757] [2022-11-16 19:39:27,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273460757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:39:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715218787] [2022-11-16 19:39:27,781 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:39:27,782 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:39:27,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:39:27,782 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:39:27,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:39:27,927 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:39:27,927 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:39:27,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:39:27,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:39:28,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:39:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:28,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,210 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:39:28,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 546 treesize of output 515 [2022-11-16 19:39:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:39:28,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:28,351 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:39:28,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:39:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:28,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:28,387 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:39:28,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:39:28,498 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:39:32,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5446#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:39:32,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:39:32,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:39:32,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-16 19:39:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934556073] [2022-11-16 19:39:32,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:39:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 19:39:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:39:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 19:39:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=866, Unknown=6, NotChecked=320, Total=1332 [2022-11-16 19:39:32,732 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 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) [2022-11-16 19:39:34,784 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (not (<= c_~N~0 0)) (<= (mod c_~N~0 4294967296) 536870911) (let ((.cse0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (or (<= c_~N~0 .cse0) (let ((.cse94 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse74 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse95 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse89 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse37 (<= .cse95 2147483647)) (.cse91 (* (mod .cse0 4294967296) 8)) (.cse92 (* 8 .cse95)) (.cse93 (* .cse74 8)) (.cse47 (<= .cse94 2147483647)) (.cse90 (* .cse94 8))) (let ((.cse46 (+ .cse90 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (not .cse47)) (.cse26 (+ .cse93 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse27 (+ .cse92 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse35 (+ (- 34359738368) .cse91 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse93 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse92 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (+ .cse91 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) (.cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse38 (not .cse37)) (.cse12 (+ .cse90 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse48 (* 8 .cse89)) (.cse49 (<= .cse89 2147483647))) (and (or (let ((.cse13 (+ (select .cse11 (+ (- 34359738368) .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse1 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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|) (= 9 (select (store (store (let ((.cse10 (store (store (store (store .cse11 .cse12 .cse13) .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (store .cse8 .cse9 (+ 2 .cse4 .cse7)))) (store .cse2 .cse3 (+ .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse7))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (<= 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 (let ((.cse25 (store .cse11 .cse46 .cse13))) (and (or (and (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse28 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse24 (store (store (store .cse25 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse20 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse19 (store .cse23 .cse9 (+ .cse20 .cse21 2)))) (store .cse19 .cse3 (+ .cse20 .cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3) 9) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28)) (< |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_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| 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 (let ((.cse34 (store (store (store .cse25 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse29 (store .cse33 .cse9 (+ .cse30 2 .cse32)))) (store .cse29 .cse3 (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse32 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 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))))) .cse37) (or .cse38 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse39 (* |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| .cse39)) (= 9 (select (store (store (let ((.cse45 (store (store (store .cse25 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse41 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse45))) (let ((.cse44 (select .cse41 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse42 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse43 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse40 (store .cse44 .cse9 (+ 2 .cse42 .cse43)))) (store .cse40 .cse3 (+ (select (select (store .cse41 |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse42 .cse43))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse39 1) c_~N~0))))))) .cse47))) .cse49) (or (let ((.cse56 (+ 2 (select .cse11 (+ .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse57 (* |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 (let ((.cse55 (store (store (store (store .cse11 .cse46 .cse56) .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse55))) (let ((.cse54 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse51 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse53 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse50 (store .cse54 .cse9 (+ .cse51 2 .cse53)))) (store .cse50 .cse3 (+ .cse51 (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| .cse50) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse53 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse57)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse57 1) c_~N~0)))) .cse47) (or .cse1 (let ((.cse64 (store .cse11 .cse12 .cse56))) (and (or (let ((.cse66 (<= .cse74 2147483647))) (and (or (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse65 (* |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 (let ((.cse63 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse63))) (let ((.cse62 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse60 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse61 (select .cse62 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse58 (store .cse62 .cse9 (+ .cse60 2 .cse61)))) (store .cse58 .cse3 (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse58) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse60 .cse61 4))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse65)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse65 1) c_~N~0)))) (not .cse66)) (or .cse66 (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse73 (* |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 (let ((.cse72 (store (store (store .cse64 .cse26 v_ArrVal_1075) .cse27 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse69 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse72))) (let ((.cse71 (select .cse69 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse68 (select .cse71 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse70 (select .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse67 (store .cse71 .cse9 (+ .cse68 2 .cse70)))) (store .cse67 .cse3 (+ .cse68 (select (select (store .cse69 |c_ULTIMATE.start_main_~a~0#1.base| .cse67) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) 4 .cse70))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse73)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse73 1) c_~N~0))))))) .cse37) (or (and (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse81 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse80 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse35 v_ArrVal_1079))) (let ((.cse76 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse80))) (let ((.cse79 (select .cse76 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse77 (select .cse79 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse78 (select .cse80 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse75 (store .cse79 .cse9 (+ 2 .cse77 .cse78)))) (store .cse75 .cse3 (+ (select (select (store .cse76 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse77 4 .cse78))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_1087) .cse3) 9) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse81)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse81 1) c_~N~0)))) (forall ((v_ArrVal_1075 Int) (v_ArrVal_1085 Int) (v_ArrVal_1077 Int) (v_ArrVal_1087 Int) (v_ArrVal_1079 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse82 (* |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| .cse82)) (= 9 (select (store (store (let ((.cse88 (store (store (store .cse64 .cse14 v_ArrVal_1075) .cse15 v_ArrVal_1077) .cse16 v_ArrVal_1079))) (let ((.cse86 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse88))) (let ((.cse87 (select .cse86 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse84 (select .cse88 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse85 (select .cse87 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse83 (store .cse87 .cse9 (+ .cse84 2 .cse85)))) (store .cse83 .cse3 (+ .cse84 .cse85 4 (select (select (store .cse86 |c_ULTIMATE.start_main_~a~0#1.base| .cse83) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))))))) .cse17 v_ArrVal_1085) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1087) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse82 1) c_~N~0))))) .cse38)))))) (not .cse49)))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) c_~N~0))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-16 19:39:49,171 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification. DAG size of input: 80 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:40:09,283 WARN L233 SmtUtils]: Spent 16.35s on a formula simplification that was a NOOP. DAG size: 201 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:40:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:26,569 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2022-11-16 19:40:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 19:40:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 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 21 [2022-11-16 19:40:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:26,570 INFO L225 Difference]: With dead ends: 121 [2022-11-16 19:40:26,570 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 19:40:26,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 139.1s TimeCoverageRelationStatistics Valid=240, Invalid=1667, Unknown=9, NotChecked=534, Total=2450 [2022-11-16 19:40:26,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:26,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 63 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 133 Unchecked, 0.4s Time] [2022-11-16 19:40:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 19:40:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2022-11-16 19:40:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.315217391304348) internal successors, (121), 92 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) [2022-11-16 19:40:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2022-11-16 19:40:26,623 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 21 [2022-11-16 19:40:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:26,623 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2022-11-16 19:40:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 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) [2022-11-16 19:40:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2022-11-16 19:40:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:40:26,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:26,623 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:26,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-16 19:40:26,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:26,824 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:40:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1893569587, now seen corresponding path program 10 times [2022-11-16 19:40:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:40:26,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294946146] [2022-11-16 19:40:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:40:26,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:40:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849189721] [2022-11-16 19:40:26,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:40:26,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:26,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:26,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 19:40:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:40:27,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 19:40:27,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:40:27,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:40:27,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:40:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294946146] [2022-11-16 19:40:27,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:40:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849189721] [2022-11-16 19:40:27,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849189721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [896778643] [2022-11-16 19:40:27,313 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:40:27,313 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:40:27,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:40:27,314 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:40:27,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:40:27,395 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:40:27,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:40:27,523 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:40:27,523 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:40:27,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:40:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 25 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 112 [2022-11-16 19:40:27,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:27,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:27,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,790 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-16 19:40:27,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 502 treesize of output 514 [2022-11-16 19:40:27,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:40:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:27,915 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:40:27,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:40:27,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:27,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:27,981 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 19:40:27,981 INFO L350 Elim1Store]: Elim1 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 212 treesize of output 193 [2022-11-16 19:40:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:28,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:28,018 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:40:28,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:40:28,031 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:40:28,420 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5975#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |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) (= |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) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~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___VERIFIER_assert_#in~cond#1| (ite (= (+ (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) (* 2 |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-16 19:40:28,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:40:28,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:40:28,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2022-11-16 19:40:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276533397] [2022-11-16 19:40:28,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:40:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 19:40:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:40:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 19:40:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:40:28,422 INFO L87 Difference]: Start difference. First operand 93 states and 121 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) [2022-11-16 19:40:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:29,671 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2022-11-16 19:40:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 19:40:29,672 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 21 [2022-11-16 19:40:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:29,673 INFO L225 Difference]: With dead ends: 222 [2022-11-16 19:40:29,674 INFO L226 Difference]: Without dead ends: 211 [2022-11-16 19:40:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=876, Invalid=3816, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 19:40:29,675 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 268 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:29,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 120 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:40:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-16 19:40:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 105. [2022-11-16 19:40:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 104 states have internal predecessors, (138), 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) [2022-11-16 19:40:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2022-11-16 19:40:29,738 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 21 [2022-11-16 19:40:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:29,738 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2022-11-16 19:40:29,738 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) [2022-11-16 19:40:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2022-11-16 19:40:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 19:40:29,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:29,739 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:29,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:29,941 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:40:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -926325933, now seen corresponding path program 9 times [2022-11-16 19:40:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:40:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843229597] [2022-11-16 19:40:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:40:29,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:40:29,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916018229] [2022-11-16 19:40:29,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:40:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:29,960 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:29,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 19:40:30,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:40:30,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:30,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 19:40:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 19:40:30,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 19:40:30,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:40:30,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843229597] [2022-11-16 19:40:30,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:40:30,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916018229] [2022-11-16 19:40:30,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916018229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:30,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1139553074] [2022-11-16 19:40:30,276 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:40:30,276 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:40:30,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:40:30,276 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:40:30,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:40:30,359 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-16 19:40:30,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 109 [2022-11-16 19:40:30,493 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:40:30,494 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:40:30,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:40:30,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:40:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,735 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:40:30,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 546 treesize of output 515 [2022-11-16 19:40:30,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:40:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,874 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:40:30,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-16 19:40:30,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,914 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:40:30,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:40:30,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:30,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:30,956 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:40:30,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:40:31,051 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:40:31,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6698#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:40:31,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:40:31,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:40:31,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-16 19:40:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032669487] [2022-11-16 19:40:31,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:40:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 19:40:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:40:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 19:40:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-16 19:40:31,490 INFO L87 Difference]: Start difference. First operand 105 states and 138 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) [2022-11-16 19:40:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:32,356 INFO L93 Difference]: Finished difference Result 184 states and 216 transitions. [2022-11-16 19:40:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 19:40:32,356 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 21 [2022-11-16 19:40:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:32,357 INFO L225 Difference]: With dead ends: 184 [2022-11-16 19:40:32,358 INFO L226 Difference]: Without dead ends: 142 [2022-11-16 19:40:32,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 19:40:32,359 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 132 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:32,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 140 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:40:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-16 19:40:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 81. [2022-11-16 19:40:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.1875) internal successors, (95), 80 states have internal predecessors, (95), 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) [2022-11-16 19:40:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2022-11-16 19:40:32,425 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 21 [2022-11-16 19:40:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:32,426 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2022-11-16 19:40:32,426 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) [2022-11-16 19:40:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2022-11-16 19:40:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 19:40:32,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:32,426 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:32,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:32,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:32,627 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:40:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash 999896621, now seen corresponding path program 10 times [2022-11-16 19:40:32,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:40:32,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551809729] [2022-11-16 19:40:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:40:32,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:40:32,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292358226] [2022-11-16 19:40:32,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:40:32,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:32,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:32,644 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:32,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 19:40:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:40:33,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 19:40:33,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:33,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:40:33,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:40:33,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:40:33,422 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:40:33,429 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:40:33,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 19:40:33,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2022-11-16 19:40:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,522 INFO L350 Elim1Store]: Elim1 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 119 treesize of output 203 [2022-11-16 19:40:33,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2022-11-16 19:40:33,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-16 19:40:33,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:33,849 INFO L321 Elim1Store]: treesize reduction 38, result has 19.1 percent of original size [2022-11-16 19:40:33,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 94 treesize of output 75 [2022-11-16 19:40:33,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:40:33,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:40:33,949 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 19:40:33,949 INFO L350 Elim1Store]: Elim1 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 107 treesize of output 87 [2022-11-16 19:40:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:34,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:45,612 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse64 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse65 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse2 (<= .cse65 2147483647)) (.cse63 (* .cse65 8)) (.cse36 (<= .cse64 2147483647)) (.cse62 (* .cse64 8)) (.cse61 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (<= .cse61 2147483647)) (.cse26 (+ .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (not .cse36)) (.cse15 (+ .cse63 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (+ .cse63 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse24 (not .cse2)) (.cse35 (+ .cse62 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse25 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse37 (* 8 .cse61))) (and (or (not .cse0) (let ((.cse27 (+ 2 (select .cse25 (+ .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse1 (let ((.cse14 (store .cse25 .cse26 .cse27))) (and (or .cse2 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse13 (store .cse14 .cse15 v_ArrVal_1278))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse13))) (let ((.cse11 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse4 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (select .cse13 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse6 (store .cse11 .cse12 (+ 2 .cse4 .cse8)))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ .cse3 .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse7 (+ .cse3 .cse4 4 .cse8))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) .cse8))))))) 10))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse22 (store .cse14 .cse23 v_ArrVal_1278))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse22))) (let ((.cse21 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse19 (select .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse20 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse18 (store .cse21 .cse12 (+ 2 .cse19 .cse20)))) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ .cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse18 .cse7 (+ .cse16 .cse19 4 .cse20))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) .cse19 .cse20))))))) 10)) .cse24)))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse34 (store (store .cse25 .cse35 .cse27) .cse15 v_ArrVal_1278))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse30 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse33 .cse12 (+ .cse28 2 .cse30)))) (let ((.cse29 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ .cse28 .cse29 .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse7 (+ .cse28 .cse29 4 .cse30))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9)))))))) 10)) .cse36)))) (or .cse0 (let ((.cse45 (+ (select .cse25 (+ (- 34359738368) .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse44 (store (store .cse25 .cse26 .cse45) .cse23 v_ArrVal_1278))) (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse44))) (let ((.cse43 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse38 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse41 (select .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse40 (store .cse43 .cse12 (+ .cse38 2 .cse41)))) (let ((.cse42 (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ .cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse40 .cse7 (+ .cse38 .cse41 4 .cse42))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) .cse41 .cse42))))))) 10)) .cse1) (or (let ((.cse53 (store .cse25 .cse35 .cse45))) (and (or .cse2 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse52 (store .cse53 .cse15 v_ArrVal_1278))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse52))) (let ((.cse51 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse46 (select .cse52 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse47 (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse49 (store .cse51 .cse12 (+ .cse46 2 .cse47)))) (let ((.cse50 (select (select (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| .cse49) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ .cse46 .cse47 (select (select (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse49 .cse7 (+ .cse46 .cse47 4 .cse50))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) .cse50))))))) 10))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse60 (store .cse53 .cse23 v_ArrVal_1278))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse60))) (let ((.cse59 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse58 (select .cse60 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse55 (store .cse59 .cse12 (+ 2 .cse57 .cse58)))) (let ((.cse56 (select (select (store .cse54 |c_ULTIMATE.start_main_~a~0#1.base| .cse55) |c_ULTIMATE.start_main_~b~0#1.base|) .cse10))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse55 .cse7 (+ .cse56 .cse57 .cse58 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9) .cse56 .cse57 .cse58))))))) 10)) .cse24))) .cse36)))))))) is different from false [2022-11-16 19:42:19,737 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 230 DAG size of output: 165 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:42:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 19:42:19,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:42:19,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551809729] [2022-11-16 19:42:19,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:42:19,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292358226] [2022-11-16 19:42:19,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292358226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:42:19,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [467009414] [2022-11-16 19:42:19,759 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:42:19,760 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:42:19,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:42:19,760 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:42:19,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:42:19,889 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-16 19:42:19,889 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:42:19,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-16 19:42:19,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 95 [2022-11-16 19:42:19,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:19,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 156 [2022-11-16 19:42:20,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:20,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:20,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,146 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-16 19:42:20,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 34 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 575 treesize of output 517 [2022-11-16 19:42:20,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-16 19:42:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:20,293 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:42:20,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:42:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:20,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:20,329 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:42:20,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-16 19:42:20,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:42:24,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7317#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |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___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |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 [2022-11-16 19:42:24,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:42:24,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:42:24,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 19:42:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078109908] [2022-11-16 19:42:24,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:42:24,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 19:42:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:42:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 19:42:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=925, Unknown=9, NotChecked=62, Total=1122 [2022-11-16 19:42:24,405 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 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) [2022-11-16 19:42:27,681 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse79 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse80 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (<= .cse80 2147483647)) (.cse78 (* .cse80 8)) (.cse43 (<= .cse79 2147483647)) (.cse77 (* .cse79 8)) (.cse76 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse14 (<= .cse76 2147483647)) (.cse13 (+ .cse77 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse0 (not .cse43)) (.cse24 (+ .cse78 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (+ .cse78 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse33 (not .cse15)) (.cse42 (+ .cse77 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse44 (* 8 .cse76)) (.cse45 (select .cse12 .cse8))) (and (or .cse0 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse11 (store .cse12 .cse13 v_ArrVal_1278))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11))) (let ((.cse9 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse3 (store .cse9 .cse10 (+ 2 .cse5 .cse6)))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse3 .cse4 (+ .cse1 4 .cse5 .cse6))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse5 .cse6))))))) 10))) (or (not .cse14) (let ((.cse34 (+ 2 (select .cse12 (+ .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse0 (let ((.cse23 (store .cse12 .cse13 .cse34))) (and (or .cse15 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse22 (store .cse23 .cse24 v_ArrVal_1278))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse22))) (let ((.cse21 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse17 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (select .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse19 (store .cse21 .cse10 (+ 2 .cse17 .cse20)))) (let ((.cse16 (select (select (store .cse18 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse16 .cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse19 .cse4 (+ .cse16 .cse17 4 .cse20))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse20))))))) 10))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse31 (store .cse23 .cse32 v_ArrVal_1278))) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse31))) (let ((.cse30 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse31 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse29 (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse27 (store .cse30 .cse10 (+ 2 .cse28 .cse29)))) (let ((.cse25 (select (select (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse25 (select (select (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse27 .cse4 (+ .cse25 .cse28 4 .cse29))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse28 .cse29))))))) 10)) .cse33)))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse41 (store (store .cse12 .cse42 .cse34) .cse24 v_ArrVal_1278))) (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse41))) (let ((.cse40 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse35 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse37 (select .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse39 (store .cse40 .cse10 (+ .cse35 2 .cse37)))) (let ((.cse36 (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse35 .cse36 .cse37 (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse39 .cse4 (+ .cse35 .cse36 4 .cse37))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))) 10)) .cse43)))) (= (select .cse12 .cse7) (+ 2 .cse45)) (= .cse45 (+ 2 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or .cse43 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse52 (store .cse12 .cse42 v_ArrVal_1278))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse52))) (let ((.cse51 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse49 (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse50 (select .cse52 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse48 (store .cse51 .cse10 (+ 2 .cse49 .cse50)))) (let ((.cse46 (select (select (store .cse47 |c_ULTIMATE.start_main_~a~0#1.base| .cse48) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse46 (select (select (store .cse47 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse48 .cse4 (+ .cse46 4 .cse49 .cse50))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse49 .cse50))))))) 10))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse14 (let ((.cse60 (+ (select .cse12 (+ (- 34359738368) .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse59 (store (store .cse12 .cse13 .cse60) .cse32 v_ArrVal_1278))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse53 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse56 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse55 (store .cse58 .cse10 (+ .cse53 2 .cse56)))) (let ((.cse57 (select (select (store .cse54 |c_ULTIMATE.start_main_~a~0#1.base| .cse55) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse53 (select (select (store .cse54 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse55 .cse4 (+ .cse53 .cse56 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse56 .cse57))))))) 10)) .cse0) (or (let ((.cse68 (store .cse12 .cse42 .cse60))) (and (or .cse15 (forall ((v_ArrVal_1278 Int)) (= (let ((.cse67 (store .cse68 .cse24 v_ArrVal_1278))) (let ((.cse63 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse67))) (let ((.cse66 (select .cse63 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse61 (select .cse67 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse62 (select .cse66 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse64 (store .cse66 .cse10 (+ .cse61 2 .cse62)))) (let ((.cse65 (select (select (store .cse63 |c_ULTIMATE.start_main_~a~0#1.base| .cse64) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse61 .cse62 (select (select (store .cse63 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse64 .cse4 (+ .cse61 .cse62 4 .cse65))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse65))))))) 10))) (or (forall ((v_ArrVal_1278 Int)) (= (let ((.cse75 (store .cse68 .cse32 v_ArrVal_1278))) (let ((.cse69 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse75))) (let ((.cse74 (select .cse69 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse72 (select .cse74 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse73 (select .cse75 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse70 (store .cse74 .cse10 (+ 2 .cse72 .cse73)))) (let ((.cse71 (select (select (store .cse69 |c_ULTIMATE.start_main_~a~0#1.base| .cse70) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ (select (select (store .cse69 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse70 .cse4 (+ .cse71 .cse72 .cse73 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse71 .cse72 .cse73))))))) 10)) .cse33))) .cse43)))) (= 3 .cse45))))) is different from true [2022-11-16 19:42:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:42:54,203 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-11-16 19:42:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 19:42:54,204 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 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) Word has length 22 [2022-11-16 19:42:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:42:54,205 INFO L225 Difference]: With dead ends: 98 [2022-11-16 19:42:54,205 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 19:42:54,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 129.9s TimeCoverageRelationStatistics Valid=276, Invalid=1700, Unknown=12, NotChecked=174, Total=2162 [2022-11-16 19:42:54,206 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 60 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:42:54,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 79 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 308 Invalid, 0 Unknown, 145 Unchecked, 6.1s Time] [2022-11-16 19:42:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 19:42:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-11-16 19:42:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 68 states have internal predecessors, (80), 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) [2022-11-16 19:42:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2022-11-16 19:42:54,258 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 22 [2022-11-16 19:42:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:42:54,258 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2022-11-16 19:42:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 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) [2022-11-16 19:42:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2022-11-16 19:42:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 19:42:54,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:42:54,259 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:42:54,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 19:42:54,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 19:42:54,467 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:42:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:42:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash -987413834, now seen corresponding path program 11 times [2022-11-16 19:42:54,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:42:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700141554] [2022-11-16 19:42:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:42:54,491 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:42:54,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901369350] [2022-11-16 19:42:54,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:42:54,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:42:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:42:54,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:42:54,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc22d542-4593-469c-b6f2-827393d8cb56/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 19:42:58,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 19:42:58,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:42:58,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 19:42:58,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:42:58,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:42:58,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:42:58,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:42:58,509 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:42:58,517 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:42:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:42:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:42:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:42:58,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:42:58,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2022-11-16 19:42:58,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,829 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:42:58,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 26 [2022-11-16 19:42:58,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 19:42:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-16 19:42:59,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-16 19:42:59,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2022-11-16 19:42:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,195 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 19:42:59,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,230 INFO L350 Elim1Store]: Elim1 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 92 treesize of output 38 [2022-11-16 19:42:59,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 19:42:59,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2022-11-16 19:42:59,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,396 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-16 19:42:59,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 121 [2022-11-16 19:42:59,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,461 INFO L321 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2022-11-16 19:42:59,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 58 [2022-11-16 19:42:59,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 95 [2022-11-16 19:42:59,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,680 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-16 19:42:59,681 INFO L350 Elim1Store]: Elim1 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 84 treesize of output 141 [2022-11-16 19:42:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,778 INFO L321 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2022-11-16 19:42:59,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 78 [2022-11-16 19:43:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:43:00,245 INFO L328 TraceCheckSpWp]: Computing backward predicates...