./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 06:48:43,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:48:43,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:48:43,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:48:43,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:48:43,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:48:43,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:48:43,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:48:43,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:48:43,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:48:43,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:48:43,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:48:43,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:48:43,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:48:43,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:48:43,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:48:43,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:48:43,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:48:43,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:48:43,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:48:43,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:48:43,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:48:43,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:48:43,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:48:43,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:48:43,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:48:43,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:48:43,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:48:43,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:48:43,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:48:43,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:48:43,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:48:43,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:48:43,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:48:43,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:48:43,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:48:43,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:48:43,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:48:43,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:48:43,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:48:43,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:48:43,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:48:43,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:48:43,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:48:43,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:48:43,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:48:43,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:48:43,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:48:43,991 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:48:43,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:48:43,992 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:48:43,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:48:43,993 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:48:43,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:48:43,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:48:43,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:48:43,994 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:48:43,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:48:43,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:48:43,995 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:48:43,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:48:43,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:48:43,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:48:43,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:48:43,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:48:43,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:48:43,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:48:43,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:48:43,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:48:43,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:48:43,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:48:44,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:48:44,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:48:44,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:48:44,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:44,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:48:44,002 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:48:44,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:48:44,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:48:44,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:48:44,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:48:44,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:48:44,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:48:44,004 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_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2022-11-19 06:48:44,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:48:44,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:48:44,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:48:44,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:48:44,306 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:48:44,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-fpi/sqm.c [2022-11-19 06:48:44,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/data/93bb4f4a7/511b0f583b1641f496cbb07339a37359/FLAG4b9e2c7d5 [2022-11-19 06:48:44,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:48:44,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/sv-benchmarks/c/array-fpi/sqm.c [2022-11-19 06:48:44,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/data/93bb4f4a7/511b0f583b1641f496cbb07339a37359/FLAG4b9e2c7d5 [2022-11-19 06:48:45,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/data/93bb4f4a7/511b0f583b1641f496cbb07339a37359 [2022-11-19 06:48:45,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:48:45,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:48:45,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:45,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:48:45,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:48:45,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b76c6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45, skipping insertion in model container [2022-11-19 06:48:45,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:48:45,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:48:45,446 WARN L234 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_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-19 06:48:45,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:45,498 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:48:45,520 WARN L234 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_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-19 06:48:45,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:45,552 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:48:45,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45 WrapperNode [2022-11-19 06:48:45,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:45,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:45,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:48:45,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:48:45,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,600 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-19 06:48:45,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:45,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:48:45,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:48:45,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:48:45,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,625 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:48:45,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:48:45,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:48:45,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:48:45,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (1/1) ... [2022-11-19 06:48:45,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:45,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:48:45,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:48:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:48:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:48:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:48:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:48:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:48:45,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:48:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:48:45,773 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:48:45,775 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:48:46,034 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:48:46,085 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:48:46,085 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:48:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:46 BoogieIcfgContainer [2022-11-19 06:48:46,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:48:46,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:48:46,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:48:46,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:48:46,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:48:45" (1/3) ... [2022-11-19 06:48:46,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6403fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:46, skipping insertion in model container [2022-11-19 06:48:46,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:45" (2/3) ... [2022-11-19 06:48:46,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6403fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:46, skipping insertion in model container [2022-11-19 06:48:46,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:46" (3/3) ... [2022-11-19 06:48:46,097 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2022-11-19 06:48:46,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:48:46,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:48:46,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:48:46,188 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;@70c2bd14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:48:46,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:48:46,193 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) [2022-11-19 06:48:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:48:46,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:46,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:46,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2022-11-19 06:48:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:46,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670331310] [2022-11-19 06:48:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:46,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:46,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463834881] [2022-11-19 06:48:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:46,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:46,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:46,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:48:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:46,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 06:48:46,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:46,761 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 06:48:46,762 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 [2022-11-19 06:48:46,787 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 [2022-11-19 06:48:46,810 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 [2022-11-19 06:48:46,928 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 [2022-11-19 06:48:46,961 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 [2022-11-19 06:48:46,973 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 [2022-11-19 06:48:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:47,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:47,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670331310] [2022-11-19 06:48:47,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463834881] [2022-11-19 06:48:47,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463834881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:47,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:47,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:48:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949395468] [2022-11-19 06:48:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:48:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:48:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:47,110 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) [2022-11-19 06:48:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:47,289 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-19 06:48:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:47,293 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 [2022-11-19 06:48:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:47,301 INFO L225 Difference]: With dead ends: 35 [2022-11-19 06:48:47,301 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 06:48:47,303 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 [2022-11-19 06:48:47,310 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 [2022-11-19 06:48:47,315 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] [2022-11-19 06:48:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 06:48:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-19 06:48:47,343 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) [2022-11-19 06:48:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-11-19 06:48:47,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2022-11-19 06:48:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:47,346 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-19 06:48:47,347 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) [2022-11-19 06:48:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2022-11-19 06:48:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:48:47,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:47,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:47,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 06:48:47,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1337635293, now seen corresponding path program 1 times [2022-11-19 06:48:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:47,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127252506] [2022-11-19 06:48:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:47,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:47,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192174268] [2022-11-19 06:48:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:47,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:47,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:47,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:48:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:47,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:48:47,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:47,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:47,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127252506] [2022-11-19 06:48:47,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:47,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192174268] [2022-11-19 06:48:47,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192174268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:47,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:47,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:48:47,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118588459] [2022-11-19 06:48:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:47,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:48:47,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:48:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:48:47,688 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) [2022-11-19 06:48:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:47,737 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-19 06:48:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:48:47,738 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 [2022-11-19 06:48:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:47,738 INFO L225 Difference]: With dead ends: 25 [2022-11-19 06:48:47,738 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 06:48:47,739 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 [2022-11-19 06:48:47,740 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 [2022-11-19 06:48:47,741 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] [2022-11-19 06:48:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 06:48:47,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-19 06:48:47,745 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) [2022-11-19 06:48:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-19 06:48:47,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2022-11-19 06:48:47,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:47,746 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-19 06:48:47,746 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) [2022-11-19 06:48:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-19 06:48:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:48:47,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:47,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:47,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:47,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1611921030, now seen corresponding path program 1 times [2022-11-19 06:48:47,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:47,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734747748] [2022-11-19 06:48:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:47,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:47,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671767098] [2022-11-19 06:48:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:47,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:47,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:48,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:48:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:48,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:48:48,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:48,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:48,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:48,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734747748] [2022-11-19 06:48:48,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671767098] [2022-11-19 06:48:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671767098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76243587] [2022-11-19 06:48:48,149 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:48:48,149 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:48,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:48,159 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:48,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:48,359 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:48:48,360 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 [2022-11-19 06:48:48,408 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 [2022-11-19 06:48:48,455 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 [2022-11-19 06:48:48,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,572 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 [2022-11-19 06:48:48,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:48,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:48,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:48,992 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:48:48,993 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 [2022-11-19 06:48:49,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:49,193 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 [2022-11-19 06:48:49,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:49,613 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 [2022-11-19 06:48:49,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:49,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:48:49,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-19 06:48:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606279029] [2022-11-19 06:48:49,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:48:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:48:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:48:49,615 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) [2022-11-19 06:48:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:49,722 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-19 06:48:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:48:49,722 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 [2022-11-19 06:48:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:49,723 INFO L225 Difference]: With dead ends: 29 [2022-11-19 06:48:49,723 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 06:48:49,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:48:49,725 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-19 06:48:49,725 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] [2022-11-19 06:48:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 06:48:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2022-11-19 06:48:49,728 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) [2022-11-19 06:48:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-19 06:48:49,729 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-11-19 06:48:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:49,729 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-19 06:48:49,729 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) [2022-11-19 06:48:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-19 06:48:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:48:49,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:49,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:49,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:49,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1565286172, now seen corresponding path program 1 times [2022-11-19 06:48:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567396817] [2022-11-19 06:48:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:49,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:49,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899251336] [2022-11-19 06:48:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:49,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:49,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:49,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:49,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:48:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:50,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:48:50,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:50,128 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 06:48:50,128 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 [2022-11-19 06:48:50,136 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 [2022-11-19 06:48:50,144 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 [2022-11-19 06:48:50,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:50,210 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 [2022-11-19 06:48:50,213 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 [2022-11-19 06:48:50,218 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 [2022-11-19 06:48:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:50,271 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 [2022-11-19 06:48:50,275 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 [2022-11-19 06:48:50,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:50,311 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 [2022-11-19 06:48:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:50,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:50,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:50,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567396817] [2022-11-19 06:48:50,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:50,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899251336] [2022-11-19 06:48:50,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899251336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:50,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361160694] [2022-11-19 06:48:50,581 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:48:50,581 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:50,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:50,582 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:50,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:50,682 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:48:50,683 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 [2022-11-19 06:48:50,842 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:48:50,843 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 [2022-11-19 06:48:50,868 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 [2022-11-19 06:48:50,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:50,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:50,925 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 [2022-11-19 06:48:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:51,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:51,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,221 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:48:51,221 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 [2022-11-19 06:48:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,375 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 [2022-11-19 06:48:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:51,474 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:51,474 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 [2022-11-19 06:48:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:51,519 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:51,519 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 [2022-11-19 06:48:51,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:52,021 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 [2022-11-19 06:48:52,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:52,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:48:52,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-19 06:48:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224191857] [2022-11-19 06:48:52,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:52,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:48:52,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:48:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=219, Unknown=6, NotChecked=0, Total=272 [2022-11-19 06:48:52,023 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) [2022-11-19 06:48:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:52,221 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-19 06:48:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:48:52,222 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 [2022-11-19 06:48:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:52,222 INFO L225 Difference]: With dead ends: 33 [2022-11-19 06:48:52,223 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:48:52,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=368, Unknown=7, NotChecked=0, Total=462 [2022-11-19 06:48:52,224 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 [2022-11-19 06:48:52,224 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] [2022-11-19 06:48:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:48:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2022-11-19 06:48:52,228 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) [2022-11-19 06:48:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-19 06:48:52,229 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2022-11-19 06:48:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:52,229 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-19 06:48:52,230 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) [2022-11-19 06:48:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-11-19 06:48:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:48:52,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:52,230 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:52,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:52,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash -978676906, now seen corresponding path program 1 times [2022-11-19 06:48:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:52,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402992829] [2022-11-19 06:48:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:52,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:52,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:52,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307301882] [2022-11-19 06:48:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:52,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:52,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:52,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:52,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:48:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:52,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:48:52,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:52,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:52,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402992829] [2022-11-19 06:48:52,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307301882] [2022-11-19 06:48:52,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307301882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:52,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:52,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:48:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125253407] [2022-11-19 06:48:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:52,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:48:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:48:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:48:52,581 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) [2022-11-19 06:48:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:52,658 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-19 06:48:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:52,659 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 [2022-11-19 06:48:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:52,659 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:48:52,660 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 06:48:52,660 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 [2022-11-19 06:48:52,663 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:52,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:48:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 06:48:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-19 06:48:52,670 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) [2022-11-19 06:48:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-19 06:48:52,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2022-11-19 06:48:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:52,673 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-19 06:48:52,673 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) [2022-11-19 06:48:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-19 06:48:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:48:52,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:52,674 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:52,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:52,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1274461626, now seen corresponding path program 2 times [2022-11-19 06:48:52,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:52,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726799109] [2022-11-19 06:48:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:52,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:52,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362734893] [2022-11-19 06:48:52,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:48:52,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:52,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:52,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:52,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:48:53,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:48:53,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:48:53,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:48:53,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:53,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:53,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726799109] [2022-11-19 06:48:53,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362734893] [2022-11-19 06:48:53,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362734893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125557265] [2022-11-19 06:48:53,092 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:48:53,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:53,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:53,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:53,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:53,243 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:48:53,244 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 [2022-11-19 06:48:53,261 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 [2022-11-19 06:48:53,288 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 [2022-11-19 06:48:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,339 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 [2022-11-19 06:48:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:53,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,624 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:48:53,625 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 [2022-11-19 06:48:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-19 06:48:53,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,814 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:53,815 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 24 treesize of output 27 [2022-11-19 06:48:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:53,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:53,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:53,944 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-19 06:48:53,945 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 [2022-11-19 06:48:54,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:54,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:54,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:54,021 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:54,021 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 [2022-11-19 06:48:54,043 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:54,345 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 [2022-11-19 06:48:54,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:54,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:48:54,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-19 06:48:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585447877] [2022-11-19 06:48:54,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:54,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:48:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:48:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:48:54,347 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) [2022-11-19 06:48:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:54,452 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-19 06:48:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:48:54,453 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 [2022-11-19 06:48:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:54,453 INFO L225 Difference]: With dead ends: 33 [2022-11-19 06:48:54,453 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 06:48:54,454 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 [2022-11-19 06:48:54,454 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 [2022-11-19 06:48:54,455 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] [2022-11-19 06:48:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 06:48:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2022-11-19 06:48:54,458 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) [2022-11-19 06:48:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-19 06:48:54,459 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2022-11-19 06:48:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:54,459 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-19 06:48:54,459 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) [2022-11-19 06:48:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-19 06:48:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:48:54,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:54,460 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:54,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:48:54,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1361538371, now seen corresponding path program 3 times [2022-11-19 06:48:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:54,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195062955] [2022-11-19 06:48:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:54,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:54,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076264695] [2022-11-19 06:48:54,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:48:54,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:54,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:54,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:54,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:48:54,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:48:54,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:48:54,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:48:54,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:54,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:54,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195062955] [2022-11-19 06:48:54,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076264695] [2022-11-19 06:48:54,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076264695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [103131869] [2022-11-19 06:48:54,882 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:48:54,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:54,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:54,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:54,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:55,033 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:48:55,033 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 [2022-11-19 06:48:55,077 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 [2022-11-19 06:48:55,099 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 [2022-11-19 06:48:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,149 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 [2022-11-19 06:48:55,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,460 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:48:55,461 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 [2022-11-19 06:48:55,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,721 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 [2022-11-19 06:48:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,754 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:55,755 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 [2022-11-19 06:48:55,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,842 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:48:55,843 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 [2022-11-19 06:48:55,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:55,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:55,892 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:55,893 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 [2022-11-19 06:48:55,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:56,230 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 [2022-11-19 06:48:56,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:56,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:48:56,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-19 06:48:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138449469] [2022-11-19 06:48:56,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:56,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 06:48:56,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 06:48:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:48:56,231 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) [2022-11-19 06:48:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:56,396 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-19 06:48:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:48:56,397 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 [2022-11-19 06:48:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:56,397 INFO L225 Difference]: With dead ends: 37 [2022-11-19 06:48:56,397 INFO L226 Difference]: Without dead ends: 32 [2022-11-19 06:48:56,398 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 [2022-11-19 06:48:56,398 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 [2022-11-19 06:48:56,399 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] [2022-11-19 06:48:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-19 06:48:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2022-11-19 06:48:56,403 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) [2022-11-19 06:48:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-19 06:48:56,406 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-11-19 06:48:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:56,407 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-19 06:48:56,407 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) [2022-11-19 06:48:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-19 06:48:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:48:56,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:56,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:56,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:56,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:48:56,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash -746752909, now seen corresponding path program 4 times [2022-11-19 06:48:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:56,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660354856] [2022-11-19 06:48:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:56,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:56,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000278575] [2022-11-19 06:48:56,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:48:56,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:56,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:48:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:56,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-19 06:48:56,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:56,969 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 06:48:56,969 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 [2022-11-19 06:48:56,978 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 [2022-11-19 06:48:56,985 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 [2022-11-19 06:48:57,002 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 [2022-11-19 06:48:57,006 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 [2022-11-19 06:48:57,041 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 [2022-11-19 06:48:57,074 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 [2022-11-19 06:48:57,096 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 [2022-11-19 06:48:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:57,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 06:48:57,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:57,155 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 [2022-11-19 06:48:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:57,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:48:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:48:57,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:57,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660354856] [2022-11-19 06:48:57,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:57,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000278575] [2022-11-19 06:48:57,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000278575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:48:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177152311] [2022-11-19 06:48:57,552 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:48:57,553 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:48:57,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:48:57,553 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:48:57,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:48:57,693 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:48:57,693 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 [2022-11-19 06:48:57,773 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:48:57,773 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 [2022-11-19 06:48:57,942 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:48:57,942 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 [2022-11-19 06:48:57,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:57,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:57,993 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 [2022-11-19 06:48:58,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:58,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:58,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,254 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:48:58,255 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 [2022-11-19 06:48:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,379 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 [2022-11-19 06:48:58,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:58,424 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:58,424 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 [2022-11-19 06:48:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:58,471 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:58,471 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 [2022-11-19 06:48:58,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:58,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:58,518 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:48:58,518 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 [2022-11-19 06:48:58,564 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:48:59,011 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 [2022-11-19 06:48:59,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:48:59,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:48:59,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-19 06:48:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184175703] [2022-11-19 06:48:59,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:48:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:48:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:48:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=312, Unknown=1, NotChecked=0, Total=380 [2022-11-19 06:48:59,013 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) [2022-11-19 06:48:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:59,342 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-19 06:48:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 06:48:59,343 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 [2022-11-19 06:48:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:59,343 INFO L225 Difference]: With dead ends: 40 [2022-11-19 06:48:59,343 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 06:48:59,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=627, Unknown=1, NotChecked=0, Total=756 [2022-11-19 06:48:59,345 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 [2022-11-19 06:48:59,345 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] [2022-11-19 06:48:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 06:48:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 19. [2022-11-19 06:48:59,350 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) [2022-11-19 06:48:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-11-19 06:48:59,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2022-11-19 06:48:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:59,351 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-19 06:48:59,351 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) [2022-11-19 06:48:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-11-19 06:48:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:48:59,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:59,352 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:59,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:59,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 06:48:59,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash 985561389, now seen corresponding path program 1 times [2022-11-19 06:48:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:59,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008782066] [2022-11-19 06:48:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:59,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:59,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439173448] [2022-11-19 06:48:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:59,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:59,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:59,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:48:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-19 06:48:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:59,748 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 06:48:59,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 06:48:59,754 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 [2022-11-19 06:48:59,788 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-19 06:48:59,789 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 [2022-11-19 06:48:59,830 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 [2022-11-19 06:48:59,836 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 [2022-11-19 06:48:59,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:59,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:48:59,889 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 [2022-11-19 06:48:59,903 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 [2022-11-19 06:48:59,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 65 [2022-11-19 06:48:59,950 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 5 treesize of output 3 [2022-11-19 06:48:59,978 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 [2022-11-19 06:49:00,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:00,035 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 [2022-11-19 06:49:00,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:00,107 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 [2022-11-19 06:49:00,292 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 [2022-11-19 06:49:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:00,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:00,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008782066] [2022-11-19 06:49:00,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439173448] [2022-11-19 06:49:00,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439173448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1890886979] [2022-11-19 06:49:00,902 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:49:00,902 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:00,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:00,902 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:00,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:00,982 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:49:00,983 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 [2022-11-19 06:49:01,108 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:01,108 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 [2022-11-19 06:49:01,129 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 [2022-11-19 06:49:01,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,170 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 [2022-11-19 06:49:01,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,419 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:49:01,420 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 [2022-11-19 06:49:01,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,535 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 [2022-11-19 06:49:01,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,593 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:01,593 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 [2022-11-19 06:49:01,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,642 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:01,643 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 [2022-11-19 06:49:01,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:01,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:01,698 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:01,699 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 [2022-11-19 06:49:01,840 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:02,275 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 [2022-11-19 06:49:02,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:02,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:02,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-19 06:49:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180934598] [2022-11-19 06:49:02,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:02,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:49:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:49:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-19 06:49:02,277 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) [2022-11-19 06:49:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:02,495 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-19 06:49:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:49:02,496 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 [2022-11-19 06:49:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:02,496 INFO L225 Difference]: With dead ends: 26 [2022-11-19 06:49:02,497 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 06:49:02,497 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 [2022-11-19 06:49:02,498 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 [2022-11-19 06:49:02,498 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] [2022-11-19 06:49:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 06:49:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-19 06:49:02,504 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) [2022-11-19 06:49:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-19 06:49:02,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2022-11-19 06:49:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-19 06:49:02,505 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) [2022-11-19 06:49:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-19 06:49:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:49:02,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:02,505 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:02,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:02,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -522629517, now seen corresponding path program 5 times [2022-11-19 06:49:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:02,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717132706] [2022-11-19 06:49:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:02,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:02,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814258186] [2022-11-19 06:49:02,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:02,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:02,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:49:02,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:49:02,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:02,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:49:02,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:49:03,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:49:03,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717132706] [2022-11-19 06:49:03,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:03,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814258186] [2022-11-19 06:49:03,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814258186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:03,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591646650] [2022-11-19 06:49:03,080 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:49:03,080 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:03,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:03,081 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:03,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:03,199 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:49:03,199 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 [2022-11-19 06:49:03,288 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:49:03,288 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 [2022-11-19 06:49:03,451 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:03,451 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 [2022-11-19 06:49:03,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,508 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 [2022-11-19 06:49:03,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,733 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:49:03,734 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 [2022-11-19 06:49:03,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,850 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 [2022-11-19 06:49:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,888 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:03,888 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 [2022-11-19 06:49:03,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,934 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:03,934 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 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-19 06:49:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:03,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:03,981 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:03,981 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 [2022-11-19 06:49:04,019 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:04,468 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 [2022-11-19 06:49:04,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:04,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:04,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-19 06:49:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760650483] [2022-11-19 06:49:04,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:04,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:49:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:49:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:49:04,470 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) [2022-11-19 06:49:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:04,701 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-19 06:49:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:49:04,703 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 [2022-11-19 06:49:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:04,703 INFO L225 Difference]: With dead ends: 54 [2022-11-19 06:49:04,703 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 06:49:04,704 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 [2022-11-19 06:49:04,704 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 [2022-11-19 06:49:04,705 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] [2022-11-19 06:49:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 06:49:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2022-11-19 06:49:04,713 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) [2022-11-19 06:49:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-19 06:49:04,715 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-19 06:49:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:04,715 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-19 06:49:04,716 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) [2022-11-19 06:49:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-19 06:49:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:49:04,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:04,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:04,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:04,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1419825270, now seen corresponding path program 2 times [2022-11-19 06:49:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186301149] [2022-11-19 06:49:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:04,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:04,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663334335] [2022-11-19 06:49:04,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:04,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:04,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:49:05,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:49:05,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-19 06:49:05,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:05,244 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 06:49:05,244 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 [2022-11-19 06:49:05,268 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-11-19 06:49:05,268 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 [2022-11-19 06:49:05,285 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 [2022-11-19 06:49:05,307 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 [2022-11-19 06:49:05,328 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 [2022-11-19 06:49:05,340 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 [2022-11-19 06:49:05,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:05,355 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 [2022-11-19 06:49:05,373 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 [2022-11-19 06:49:05,430 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 [2022-11-19 06:49:05,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:05,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,446 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 [2022-11-19 06:49:05,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,546 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 [2022-11-19 06:49:05,651 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 [2022-11-19 06:49:05,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:05,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,663 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 [2022-11-19 06:49:05,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,684 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 [2022-11-19 06:49:05,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:05,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:05,764 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:49:05,765 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 [2022-11-19 06:49:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:06,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:08,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186301149] [2022-11-19 06:49:08,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663334335] [2022-11-19 06:49:08,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663334335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1184569432] [2022-11-19 06:49:08,659 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:49:08,659 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:08,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:08,660 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:08,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:08,745 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:49:08,746 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 [2022-11-19 06:49:08,877 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:49:08,877 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 [2022-11-19 06:49:09,007 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:09,007 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 [2022-11-19 06:49:09,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,053 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 [2022-11-19 06:49:09,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,306 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 06:49:09,307 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 [2022-11-19 06:49:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,505 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 [2022-11-19 06:49:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,524 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:09,525 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 [2022-11-19 06:49:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:09,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:09,656 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-19 06:49:09,657 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 [2022-11-19 06:49:09,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:09,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:09,709 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:09,710 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 [2022-11-19 06:49:09,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:10,822 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 [2022-11-19 06:49:10,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:10,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:10,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-19 06:49:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462261373] [2022-11-19 06:49:10,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:10,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 06:49:10,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 06:49:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-11-19 06:49:10,825 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) [2022-11-19 06:49:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:11,382 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-11-19 06:49:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 06:49:11,383 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 [2022-11-19 06:49:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:11,385 INFO L225 Difference]: With dead ends: 37 [2022-11-19 06:49:11,385 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 06:49:11,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:49:11,386 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 [2022-11-19 06:49:11,387 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] [2022-11-19 06:49:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 06:49:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-19 06:49:11,398 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) [2022-11-19 06:49:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-19 06:49:11,398 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2022-11-19 06:49:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:11,399 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-19 06:49:11,399 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) [2022-11-19 06:49:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-19 06:49:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:49:11,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:11,400 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:11,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 06:49:11,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash 916648218, now seen corresponding path program 6 times [2022-11-19 06:49:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:11,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131227555] [2022-11-19 06:49:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:11,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:11,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157047444] [2022-11-19 06:49:11,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:49:11,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:11,667 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:11,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 06:49:11,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:49:11,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:11,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:49:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:11,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:11,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131227555] [2022-11-19 06:49:11,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157047444] [2022-11-19 06:49:11,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157047444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925752741] [2022-11-19 06:49:11,906 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:49:11,906 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:11,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:11,907 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:11,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:12,031 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:49:12,031 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 [2022-11-19 06:49:12,112 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:49:12,112 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 [2022-11-19 06:49:12,245 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:12,245 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 [2022-11-19 06:49:12,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,300 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 [2022-11-19 06:49:12,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,528 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:49:12,529 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 [2022-11-19 06:49:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,643 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 [2022-11-19 06:49:12,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,672 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:12,673 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 [2022-11-19 06:49:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,819 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-19 06:49:12,819 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 [2022-11-19 06:49:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:12,874 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:12,875 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 91 treesize of output 94 [2022-11-19 06:49:12,891 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:13,221 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 [2022-11-19 06:49:13,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:13,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:13,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-19 06:49:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678679498] [2022-11-19 06:49:13,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:13,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:49:13,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:49:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:49:13,224 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) [2022-11-19 06:49:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:13,546 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2022-11-19 06:49:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 06:49:13,546 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 [2022-11-19 06:49:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:13,547 INFO L225 Difference]: With dead ends: 71 [2022-11-19 06:49:13,547 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 06:49:13,548 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 [2022-11-19 06:49:13,548 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:13,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 47 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:49:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 06:49:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 39. [2022-11-19 06:49:13,562 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) [2022-11-19 06:49:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-19 06:49:13,563 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2022-11-19 06:49:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:13,563 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-19 06:49:13,564 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) [2022-11-19 06:49:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-19 06:49:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:49:13,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:13,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:13,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 06:49:13,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1710382253, now seen corresponding path program 7 times [2022-11-19 06:49:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:13,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119174980] [2022-11-19 06:49:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:13,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:13,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792025879] [2022-11-19 06:49:13,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:49:13,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:13,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:13,796 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:13,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 06:49:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-19 06:49:14,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:14,889 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 [2022-11-19 06:49:14,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,898 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 [2022-11-19 06:49:14,902 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 [2022-11-19 06:49:14,921 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 [2022-11-19 06:49:14,947 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 [2022-11-19 06:49:14,978 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 [2022-11-19 06:49:15,001 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 [2022-11-19 06:49:15,048 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 [2022-11-19 06:49:15,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,055 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 [2022-11-19 06:49:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,076 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 [2022-11-19 06:49:15,106 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 [2022-11-19 06:49:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,113 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 [2022-11-19 06:49:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,133 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 [2022-11-19 06:49:15,168 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 [2022-11-19 06:49:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,174 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 [2022-11-19 06:49:15,181 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:49:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:15,227 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 [2022-11-19 06:49:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:15,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:49:16,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:16,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119174980] [2022-11-19 06:49:16,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:16,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792025879] [2022-11-19 06:49:16,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792025879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:16,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253448548] [2022-11-19 06:49:16,093 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:49:16,093 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:16,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:16,094 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:16,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:16,222 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:16,223 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 [2022-11-19 06:49:16,244 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 [2022-11-19 06:49:16,265 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 [2022-11-19 06:49:16,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,300 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 [2022-11-19 06:49:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,519 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:49:16,520 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 [2022-11-19 06:49:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,636 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 [2022-11-19 06:49:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,657 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:16,657 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 [2022-11-19 06:49:16,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,779 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-19 06:49:16,779 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 [2022-11-19 06:49:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:16,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:16,840 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:16,841 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 [2022-11-19 06:49:16,861 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:17,224 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 [2022-11-19 06:49:17,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:17,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:17,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2022-11-19 06:49:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15721650] [2022-11-19 06:49:17,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:17,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 06:49:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 06:49:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=527, Unknown=1, NotChecked=0, Total=650 [2022-11-19 06:49:17,226 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) [2022-11-19 06:49:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:17,717 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-11-19 06:49:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 06:49:17,717 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 [2022-11-19 06:49:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:17,718 INFO L225 Difference]: With dead ends: 64 [2022-11-19 06:49:17,718 INFO L226 Difference]: Without dead ends: 62 [2022-11-19 06:49:17,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=189, Invalid=932, Unknown=1, NotChecked=0, Total=1122 [2022-11-19 06:49:17,719 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-19 06:49:17,720 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] [2022-11-19 06:49:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-19 06:49:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2022-11-19 06:49:17,734 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) [2022-11-19 06:49:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-19 06:49:17,735 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2022-11-19 06:49:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:17,736 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-19 06:49:17,736 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) [2022-11-19 06:49:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-19 06:49:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:49:17,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:17,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:17,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 06:49:17,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 724259981, now seen corresponding path program 3 times [2022-11-19 06:49:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:17,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692075505] [2022-11-19 06:49:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:17,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50397915] [2022-11-19 06:49:17,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:49:17,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:17,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:17,983 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:49:18,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:49:18,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-19 06:49:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:18,622 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 06:49:18,622 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 [2022-11-19 06:49:18,627 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 [2022-11-19 06:49:18,659 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-19 06:49:18,659 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 [2022-11-19 06:49:18,683 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 [2022-11-19 06:49:18,711 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 [2022-11-19 06:49:18,786 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 [2022-11-19 06:49:18,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:18,800 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 [2022-11-19 06:49:18,840 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 [2022-11-19 06:49:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:18,932 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 [2022-11-19 06:49:18,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:18,943 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 [2022-11-19 06:49:18,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:18,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:18,960 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 [2022-11-19 06:49:18,974 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 [2022-11-19 06:49:19,021 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 [2022-11-19 06:49:19,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,031 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 [2022-11-19 06:49:19,095 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 [2022-11-19 06:49:19,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,105 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 [2022-11-19 06:49:19,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,184 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 [2022-11-19 06:49:19,239 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 [2022-11-19 06:49:19,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,248 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 [2022-11-19 06:49:19,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,280 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 [2022-11-19 06:49:19,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:19,336 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 [2022-11-19 06:49:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:19,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:29,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692075505] [2022-11-19 06:49:29,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50397915] [2022-11-19 06:49:29,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50397915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115294220] [2022-11-19 06:49:29,868 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:49:29,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:29,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:29,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:29,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:30,003 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:30,004 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 [2022-11-19 06:49:30,021 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 [2022-11-19 06:49:30,039 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 [2022-11-19 06:49:30,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,074 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 [2022-11-19 06:49:30,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:30,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:30,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,394 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:49:30,395 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 [2022-11-19 06:49:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,523 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 [2022-11-19 06:49:30,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,560 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:30,561 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 [2022-11-19 06:49:30,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:30,686 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-19 06:49:30,687 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 [2022-11-19 06:49:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:30,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:30,742 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:30,742 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 [2022-11-19 06:49:30,871 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:31,518 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 [2022-11-19 06:49:31,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:31,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:31,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-19 06:49:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14929348] [2022-11-19 06:49:31,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:31,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:49:31,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:49:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=754, Unknown=1, NotChecked=0, Total=870 [2022-11-19 06:49:31,520 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) [2022-11-19 06:49:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:32,065 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-11-19 06:49:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 06:49:32,066 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 [2022-11-19 06:49:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:32,067 INFO L225 Difference]: With dead ends: 71 [2022-11-19 06:49:32,067 INFO L226 Difference]: Without dead ends: 69 [2022-11-19 06:49:32,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=158, Invalid=963, Unknown=1, NotChecked=0, Total=1122 [2022-11-19 06:49:32,068 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 [2022-11-19 06:49:32,068 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] [2022-11-19 06:49:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-19 06:49:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-19 06:49:32,087 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) [2022-11-19 06:49:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2022-11-19 06:49:32,088 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 16 [2022-11-19 06:49:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:32,088 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2022-11-19 06:49:32,089 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) [2022-11-19 06:49:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2022-11-19 06:49:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:49:32,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:32,089 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:32,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:32,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 06:49:32,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1181831571, now seen corresponding path program 4 times [2022-11-19 06:49:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:32,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756384593] [2022-11-19 06:49:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:32,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:32,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261459403] [2022-11-19 06:49:32,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:49:32,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:32,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:32,308 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:32,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 06:49:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:32,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-19 06:49:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:32,592 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 [2022-11-19 06:49:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,599 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 [2022-11-19 06:49:32,603 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 [2022-11-19 06:49:32,607 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 [2022-11-19 06:49:32,613 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 [2022-11-19 06:49:32,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,642 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 [2022-11-19 06:49:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,690 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 [2022-11-19 06:49:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,775 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 [2022-11-19 06:49:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:32,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:32,840 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:49:32,841 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 [2022-11-19 06:49:33,127 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-19 06:49:33,127 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 [2022-11-19 06:49:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:33,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:43,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756384593] [2022-11-19 06:49:43,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261459403] [2022-11-19 06:49:43,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261459403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1437275291] [2022-11-19 06:49:43,858 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:49:43,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:43,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:43,859 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:43,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:43,940 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:49:43,940 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 [2022-11-19 06:49:44,081 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:49:44,081 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 [2022-11-19 06:49:44,103 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 [2022-11-19 06:49:44,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,141 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 [2022-11-19 06:49:44,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,344 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:49:44,345 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 [2022-11-19 06:49:44,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,461 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 [2022-11-19 06:49:44,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,498 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:44,498 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 [2022-11-19 06:49:44,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,539 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:44,539 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 [2022-11-19 06:49:44,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:44,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:44,586 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:49:44,587 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 [2022-11-19 06:49:44,665 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:49:45,555 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 [2022-11-19 06:49:45,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:49:45,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:49:45,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-19 06:49:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2237480] [2022-11-19 06:49:45,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:49:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 06:49:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 06:49:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:49:45,557 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) [2022-11-19 06:49:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:46,795 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2022-11-19 06:49:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:49:46,796 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 [2022-11-19 06:49:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:46,796 INFO L225 Difference]: With dead ends: 70 [2022-11-19 06:49:46,796 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 06:49:46,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:49:46,798 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:46,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 35 Unchecked, 0.5s Time] [2022-11-19 06:49:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 06:49:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 06:49:46,816 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) [2022-11-19 06:49:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-19 06:49:46,817 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-19 06:49:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:46,817 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-19 06:49:46,817 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) [2022-11-19 06:49:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-19 06:49:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:49:46,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:46,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:46,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:47,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 06:49:47,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1499444630, now seen corresponding path program 5 times [2022-11-19 06:49:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:47,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819234770] [2022-11-19 06:49:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:47,047 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043638802] [2022-11-19 06:49:47,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:47,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:47,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 06:49:47,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:49:47,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:47,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-19 06:49:47,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:47,902 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 06:49:47,903 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 [2022-11-19 06:49:47,908 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 [2022-11-19 06:49:47,941 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-19 06:49:47,941 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 [2022-11-19 06:49:47,957 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 [2022-11-19 06:49:47,999 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 [2022-11-19 06:49:48,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:48,034 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 [2022-11-19 06:49:48,054 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 [2022-11-19 06:49:48,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:48,063 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 [2022-11-19 06:49:48,108 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 [2022-11-19 06:49:48,125 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 [2022-11-19 06:49:48,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,222 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 [2022-11-19 06:49:48,231 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 [2022-11-19 06:49:48,316 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 [2022-11-19 06:49:48,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,325 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 [2022-11-19 06:49:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,357 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 [2022-11-19 06:49:48,431 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 [2022-11-19 06:49:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,443 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 [2022-11-19 06:49:48,454 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:49:48,547 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 [2022-11-19 06:49:48,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,559 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 [2022-11-19 06:49:48,710 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 [2022-11-19 06:49:48,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,729 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 [2022-11-19 06:49:48,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,749 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 [2022-11-19 06:49:48,840 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 [2022-11-19 06:49:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,849 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 [2022-11-19 06:49:48,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:48,977 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 [2022-11-19 06:49:49,069 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 [2022-11-19 06:49:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:49,090 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-19 06:49:49,090 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 [2022-11-19 06:49:49,126 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 [2022-11-19 06:49:49,789 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 [2022-11-19 06:49:49,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:49,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:49,804 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 [2022-11-19 06:49:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:49,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:00,424 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:50:25,163 WARN L233 SmtUtils]: Spent 20.25s on a formula simplification. DAG size of input: 67 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:50:44,323 WARN L233 SmtUtils]: Spent 13.90s on a formula simplification. DAG size of input: 74 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:43,696 WARN L233 SmtUtils]: Spent 41.50s on a formula simplification. DAG size of input: 134 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:51:52,050 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:13,635 WARN L233 SmtUtils]: Spent 13.67s on a formula simplification. DAG size of input: 169 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:24,591 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 199 DAG size of output: 180 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:24,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:24,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:24,645 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-19 06:53:24,645 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 [2022-11-19 06:53:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:53:24,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819234770] [2022-11-19 06:53:24,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:53:24,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043638802] [2022-11-19 06:53:24,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043638802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:24,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1537744399] [2022-11-19 06:53:24,650 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:53:24,650 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:53:24,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:53:24,651 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:53:24,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:53:24,797 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:53:24,798 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 [2022-11-19 06:53:24,814 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 [2022-11-19 06:53:24,835 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 [2022-11-19 06:53:24,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:24,881 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 [2022-11-19 06:53:24,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:25,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,170 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:53:25,170 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 [2022-11-19 06:53:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,368 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 [2022-11-19 06:53:25,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,385 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:53:25,385 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 [2022-11-19 06:53:25,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:25,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:25,513 INFO L321 Elim1Store]: treesize reduction 249, result has 12.0 percent of original size [2022-11-19 06:53:25,514 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 [2022-11-19 06:53:25,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:53:25,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:53:25,573 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:53:25,573 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 [2022-11-19 06:53:25,711 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:28,638 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 [2022-11-19 06:53:28,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:53:28,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:53:28,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-19 06:53:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628343408] [2022-11-19 06:53:28,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:53:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-19 06:53:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-19 06:53:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1000, Unknown=16, NotChecked=0, Total=1190 [2022-11-19 06:53:28,640 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) [2022-11-19 06:53:38,076 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 87 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:48,317 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 270 DAG size of output: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:15,220 WARN L233 SmtUtils]: Spent 15.06s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:29,711 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:55,880 WARN L233 SmtUtils]: Spent 15.24s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:05,632 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:55:16,101 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-19 06:55:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 06:55:16,102 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 [2022-11-19 06:55:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:55:16,103 INFO L225 Difference]: With dead ends: 95 [2022-11-19 06:55:16,103 INFO L226 Difference]: Without dead ends: 93 [2022-11-19 06:55:16,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 320.7s TimeCoverageRelationStatistics Valid=352, Invalid=2168, Unknown=30, NotChecked=0, Total=2550 [2022-11-19 06:55:16,105 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 [2022-11-19 06:55:16,106 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] [2022-11-19 06:55:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-19 06:55:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2022-11-19 06:55:16,139 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) [2022-11-19 06:55:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-11-19 06:55:16,140 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 18 [2022-11-19 06:55:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:55:16,141 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-11-19 06:55:16,141 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) [2022-11-19 06:55:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-11-19 06:55:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:55:16,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:55:16,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:55:16,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:55:16,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 06:55:16,352 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:55:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:55:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1481457124, now seen corresponding path program 6 times [2022-11-19 06:55:16,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:55:16,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501837548] [2022-11-19 06:55:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:16,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:55:16,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:55:16,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424346473] [2022-11-19 06:55:16,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:55:16,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:55:16,376 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:55:16,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 06:55:16,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:55:16,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:55:16,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-19 06:55:16,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:55:16,899 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 [2022-11-19 06:55:16,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:16,906 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 [2022-11-19 06:55:16,910 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 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-19 06:55:16,928 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 [2022-11-19 06:55:16,936 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 [2022-11-19 06:55:16,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:16,971 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 [2022-11-19 06:55:17,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,026 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 [2022-11-19 06:55:17,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,077 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 [2022-11-19 06:55:17,187 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 [2022-11-19 06:55:17,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:55:17,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,200 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 [2022-11-19 06:55:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:55:17,328 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:55:17,329 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 [2022-11-19 06:55:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:55:17,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:55:17,401 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:55:17,406 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 [2022-11-19 06:55:17,858 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-19 06:55:17,859 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 [2022-11-19 06:55:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:55:17,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:24,828 WARN L233 SmtUtils]: Spent 25.66s on a formula simplification. DAG size of input: 169 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:24,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:24,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501837548] [2022-11-19 06:56:24,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:24,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424346473] [2022-11-19 06:56:24,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424346473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1157912583] [2022-11-19 06:56:24,848 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:56:24,848 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:24,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:24,849 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:24,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:24,997 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:56:24,998 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 [2022-11-19 06:56:25,016 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 [2022-11-19 06:56:25,033 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 [2022-11-19 06:56:25,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,084 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 [2022-11-19 06:56:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,330 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:56:25,330 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 [2022-11-19 06:56:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,433 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 63 treesize of output 63 [2022-11-19 06:56:25,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,455 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:25,455 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 [2022-11-19 06:56:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,594 INFO L321 Elim1Store]: treesize reduction 254, result has 10.2 percent of original size [2022-11-19 06:56:25,595 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 [2022-11-19 06:56:25,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:25,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:25,667 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:25,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2022-11-19 06:56:25,795 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:28,975 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 [2022-11-19 06:56:28,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:28,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:56:28,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-19 06:56:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644951830] [2022-11-19 06:56:28,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 06:56:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 06:56:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=868, Unknown=8, NotChecked=0, Total=992 [2022-11-19 06:56:28,978 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) [2022-11-19 06:56:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:31,006 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2022-11-19 06:56:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 06:56:31,007 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 [2022-11-19 06:56:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:31,008 INFO L225 Difference]: With dead ends: 90 [2022-11-19 06:56:31,008 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 06:56:31,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 70.8s TimeCoverageRelationStatistics Valid=170, Invalid=1154, Unknown=8, NotChecked=0, Total=1332 [2022-11-19 06:56:31,010 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-19 06:56:31,010 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] [2022-11-19 06:56:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 06:56:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-11-19 06:56:31,056 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) [2022-11-19 06:56:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2022-11-19 06:56:31,057 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 19 [2022-11-19 06:56:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:31,058 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2022-11-19 06:56:31,058 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) [2022-11-19 06:56:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2022-11-19 06:56:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:56:31,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:31,059 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:31,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 06:56:31,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1715181741, now seen corresponding path program 8 times [2022-11-19 06:56:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218636974] [2022-11-19 06:56:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:31,298 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:31,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282389397] [2022-11-19 06:56:31,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:56:31,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:31,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:31,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 06:56:32,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:56:32,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:56:32,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:56:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:32,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:33,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218636974] [2022-11-19 06:56:33,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282389397] [2022-11-19 06:56:33,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282389397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992831375] [2022-11-19 06:56:33,058 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:56:33,058 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:33,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:33,059 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:33,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:33,156 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 06:56:33,156 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 [2022-11-19 06:56:33,298 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:56:33,298 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 [2022-11-19 06:56:33,493 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:56:33,493 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 [2022-11-19 06:56:33,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:33,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,560 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 [2022-11-19 06:56:33,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:33,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:33,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,789 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 06:56:33,791 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 [2022-11-19 06:56:33,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,915 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 [2022-11-19 06:56:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:33,956 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:33,956 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 24 treesize of output 27 [2022-11-19 06:56:33,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:34,007 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:34,008 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 [2022-11-19 06:56:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:34,072 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:34,073 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 [2022-11-19 06:56:34,121 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:34,756 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 [2022-11-19 06:56:34,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:34,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:56:34,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-19 06:56:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046288994] [2022-11-19 06:56:34,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 06:56:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 06:56:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:56:34,759 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) [2022-11-19 06:56:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:35,331 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2022-11-19 06:56:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:56:35,331 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 [2022-11-19 06:56:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:35,332 INFO L225 Difference]: With dead ends: 139 [2022-11-19 06:56:35,333 INFO L226 Difference]: Without dead ends: 123 [2022-11-19 06:56:35,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 06:56:35,334 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 [2022-11-19 06:56:35,334 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] [2022-11-19 06:56:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-19 06:56:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2022-11-19 06:56:35,388 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) [2022-11-19 06:56:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2022-11-19 06:56:35,389 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 19 [2022-11-19 06:56:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:35,389 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2022-11-19 06:56:35,389 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) [2022-11-19 06:56:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2022-11-19 06:56:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:56:35,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:35,390 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:35,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 06:56:35,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash -394448710, now seen corresponding path program 9 times [2022-11-19 06:56:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664884710] [2022-11-19 06:56:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:35,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:35,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48247024] [2022-11-19 06:56:35,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:56:35,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:35,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:35,625 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:35,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 06:56:35,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:56:35,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:56:35,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:56:35,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:56:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:56:36,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:36,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664884710] [2022-11-19 06:56:36,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:36,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48247024] [2022-11-19 06:56:36,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48247024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [314715543] [2022-11-19 06:56:36,061 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 06:56:36,061 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:36,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:36,062 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:36,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:36,232 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:56:36,232 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 [2022-11-19 06:56:36,251 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 [2022-11-19 06:56:36,276 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 [2022-11-19 06:56:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,334 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 [2022-11-19 06:56:36,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,632 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 06:56:36,633 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 [2022-11-19 06:56:36,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,851 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 [2022-11-19 06:56:36,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,883 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:36,884 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 [2022-11-19 06:56:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,987 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:56:36,988 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 [2022-11-19 06:56:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:37,039 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:56:37,040 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 [2022-11-19 06:56:37,057 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:37,511 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 [2022-11-19 06:56:37,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:37,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:56:37,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-19 06:56:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113814498] [2022-11-19 06:56:37,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 06:56:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 06:56:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:56:37,514 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) [2022-11-19 06:56:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:38,500 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2022-11-19 06:56:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-19 06:56:38,500 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 [2022-11-19 06:56:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:38,502 INFO L225 Difference]: With dead ends: 164 [2022-11-19 06:56:38,502 INFO L226 Difference]: Without dead ends: 152 [2022-11-19 06:56:38,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 06:56:38,504 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:38,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 94 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:56:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-19 06:56:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 80. [2022-11-19 06:56:38,571 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) [2022-11-19 06:56:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-11-19 06:56:38,572 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 20 [2022-11-19 06:56:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:38,572 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-11-19 06:56:38,572 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) [2022-11-19 06:56:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-11-19 06:56:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:56:38,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:38,573 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:38,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:38,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash 51791853, now seen corresponding path program 7 times [2022-11-19 06:56:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375727493] [2022-11-19 06:56:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:38,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:38,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821614424] [2022-11-19 06:56:38,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:56:38,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:38,805 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:38,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 06:56:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:40,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-19 06:56:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:40,929 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 [2022-11-19 06:56:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,941 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 [2022-11-19 06:56:40,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-19 06:56:40,949 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 [2022-11-19 06:56:40,957 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 [2022-11-19 06:56:40,995 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 [2022-11-19 06:56:41,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,003 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 [2022-11-19 06:56:41,023 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:56:41,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,081 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 [2022-11-19 06:56:41,132 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 [2022-11-19 06:56:41,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,140 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 [2022-11-19 06:56:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,210 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 [2022-11-19 06:56:41,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,256 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 [2022-11-19 06:56:41,325 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 [2022-11-19 06:56:41,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,339 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 [2022-11-19 06:56:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,365 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 [2022-11-19 06:56:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,456 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 [2022-11-19 06:56:41,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,523 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 [2022-11-19 06:56:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,587 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 [2022-11-19 06:56:41,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:41,648 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 [2022-11-19 06:56:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:41,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:25,291 WARN L233 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 120 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:28,413 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse33 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse34 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse27 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse24 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse28 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse31 (* 8 .cse24)) (.cse32 (* .cse27 8)) (.cse0 (<= .cse34 2147483647)) (.cse30 (* .cse34 8)) (.cse29 (* .cse33 8)) (.cse20 (<= .cse33 2147483647))) (let ((.cse1 (not .cse20)) (.cse13 (+ .cse29 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (not .cse0)) (.cse10 (+ .cse32 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (+ .cse31 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse5 (+ .cse32 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ .cse31 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ (- 34359738368) .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ .cse29 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (* .cse28 8)) (.cse16 (<= .cse28 2147483647))) (and (or (let ((.cse4 (+ .cse15 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse0 (and .cse1 (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= 2 (let ((.cse2 (store (store (store (store (store .cse3 .cse4 v_ArrVal_992) .cse5 v_ArrVal_994) .cse6 v_ArrVal_996) .cse7 v_ArrVal_997) .cse8 v_ArrVal_999))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= 2 (let ((.cse9 (store (store (store (store (store .cse3 .cse4 v_ArrVal_992) .cse10 v_ArrVal_994) .cse11 v_ArrVal_996) .cse12 v_ArrVal_997) .cse13 v_ArrVal_999))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse14))) .cse16) (or (let ((.cse18 (+ .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (and (or .cse1 (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= 2 (let ((.cse17 (store (store (store (store (store .cse3 .cse18 v_ArrVal_992) .cse10 v_ArrVal_994) .cse11 v_ArrVal_996) .cse12 v_ArrVal_997) .cse13 v_ArrVal_999))) (+ (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse17) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (or (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= 2 (let ((.cse19 (store (store (store (store (store .cse3 .cse18 v_ArrVal_992) .cse10 v_ArrVal_994) .cse11 v_ArrVal_996) .cse12 v_ArrVal_997) .cse8 v_ArrVal_999))) (+ (select .cse19 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse20)) .cse14) (or .cse0 (let ((.cse25 (<= .cse27 2147483647))) (and (or (let ((.cse22 (<= .cse24 2147483647))) (and (or (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= (let ((.cse21 (store (store (store (store (store .cse3 .cse18 v_ArrVal_992) .cse10 v_ArrVal_994) .cse6 v_ArrVal_996) .cse7 v_ArrVal_997) .cse8 v_ArrVal_999))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|))) 2)) .cse22) (or (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= 2 (let ((.cse23 (store (store (store (store (store .cse3 .cse18 v_ArrVal_992) .cse10 v_ArrVal_994) .cse11 v_ArrVal_996) .cse7 v_ArrVal_997) .cse8 v_ArrVal_999))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not .cse22)))) (not .cse25)) (or .cse25 (forall ((v_ArrVal_994 Int) (v_ArrVal_992 Int) (v_ArrVal_999 Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int)) (= (let ((.cse26 (store (store (store (store (store .cse3 .cse18 v_ArrVal_992) .cse5 v_ArrVal_994) .cse6 v_ArrVal_996) .cse7 v_ArrVal_997) .cse8 v_ArrVal_999))) (+ (select .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse26) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) 2)))))))) (not .cse16)))))) is different from true [2022-11-19 06:57:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-19 06:57:28,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375727493] [2022-11-19 06:57:28,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:57:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821614424] [2022-11-19 06:57:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821614424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1097483388] [2022-11-19 06:57:28,431 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:57:28,431 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:57:28,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:57:28,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:57:28,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:57:28,604 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 06:57:28,604 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 [2022-11-19 06:57:28,770 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 06:57:28,771 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 [2022-11-19 06:57:28,794 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 [2022-11-19 06:57:28,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,837 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 [2022-11-19 06:57:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,132 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 06:57:29,133 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 [2022-11-19 06:57:29,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,341 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 [2022-11-19 06:57:29,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,368 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:57:29,369 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 [2022-11-19 06:57:29,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,455 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:57:29,456 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 [2022-11-19 06:57:29,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:29,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:29,506 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:57:29,507 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 [2022-11-19 06:57:29,658 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:31,584 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 [2022-11-19 06:57:31,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:57:31,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:57:31,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2022-11-19 06:57:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181006596] [2022-11-19 06:57:31,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:57:31,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 06:57:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 06:57:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1223, Unknown=8, NotChecked=72, Total=1482 [2022-11-19 06:57:31,586 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) [2022-11-19 06:57:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:39,665 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-11-19 06:57:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 06:57:39,665 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 [2022-11-19 06:57:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:39,666 INFO L225 Difference]: With dead ends: 108 [2022-11-19 06:57:39,667 INFO L226 Difference]: Without dead ends: 106 [2022-11-19 06:57:39,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=240, Invalid=1561, Unknown=9, NotChecked=82, Total=1892 [2022-11-19 06:57:39,668 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:39,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2022-11-19 06:57:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-19 06:57:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2022-11-19 06:57:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3012048192771084) internal successors, (108), 83 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:57:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2022-11-19 06:57:39,743 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 108 transitions. Word has length 20 [2022-11-19 06:57:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:39,743 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 108 transitions. [2022-11-19 06:57:39,744 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) [2022-11-19 06:57:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 108 transitions. [2022-11-19 06:57:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 06:57:39,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:39,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:39,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 06:57:39,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:39,955 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:57:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1994729357, now seen corresponding path program 8 times [2022-11-19 06:57:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:39,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028625244] [2022-11-19 06:57:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:39,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:57:39,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898561592] [2022-11-19 06:57:39,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:57:39,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:57:39,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:57:39,981 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:57:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-19 06:57:41,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:57:41,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:57:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-19 06:57:41,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:41,445 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 06:57:41,445 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 [2022-11-19 06:57:41,484 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-19 06:57:41,484 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 [2022-11-19 06:57:41,495 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 [2022-11-19 06:57:41,518 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 [2022-11-19 06:57:41,565 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:57:41,578 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 [2022-11-19 06:57:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,608 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 [2022-11-19 06:57:41,614 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:57:41,624 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 [2022-11-19 06:57:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,673 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 [2022-11-19 06:57:41,762 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 [2022-11-19 06:57:41,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,774 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 [2022-11-19 06:57:41,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,823 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 [2022-11-19 06:57:41,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:41,922 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 [2022-11-19 06:57:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,001 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 [2022-11-19 06:57:42,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,164 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 [2022-11-19 06:57:42,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:42,261 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:57:42,261 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 [2022-11-19 06:57:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:57:42,368 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 06:57:42,368 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 [2022-11-19 06:57:42,513 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:57:42,514 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 [2022-11-19 06:57:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:42,545 INFO L321 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2022-11-19 06:57:42,546 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 [2022-11-19 06:57:42,604 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 [2022-11-19 06:57:43,347 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 [2022-11-19 06:57:43,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:43,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:43,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:43,360 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 [2022-11-19 06:57:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:57:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:31,692 WARN L837 $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 [2022-11-19 06:59:46,892 WARN L233 SmtUtils]: Spent 41.39s on a formula simplification. DAG size of input: 156 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:59:52,278 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse37 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse36 (* .cse37 8))) (let ((.cse35 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (<= .cse37 2147483647))) (let ((.cse14 (not .cse13)) (.cse3 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (select .cse10 .cse21)) (.cse8 (+ .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (+ .cse36 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse22 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse23 (* 8 .cse35)) (.cse0 (<= .cse35 2147483647))) (and (or .cse0 (let ((.cse19 (select .cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse23))) (.cse20 (select .cse22 (+ (- 34359738368) .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse12 (+ .cse19 .cse20 2))) (and (or (let ((.cse2 (let ((.cse6 (store .cse10 .cse11 .cse12))) (store .cse6 .cse7 (+ 2 (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))))) (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 ((.cse1 (* |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| .cse1)) (= (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) 9) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1 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)) (= 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)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~N~0)))))) .cse13) (or .cse14 (let ((.cse15 (let ((.cse18 (store .cse10 .cse21 .cse12))) (store .cse18 .cse7 (+ .cse19 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse20 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 ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse15 .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) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~N~0)))) (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 ((.cse17 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 9 (select (store (store .cse15 .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)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17 1) c_~N~0))))))))))) (or (let ((.cse28 (select .cse22 (+ .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse29 (select .cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse23)))) (let ((.cse30 (+ 2 .cse28 .cse29))) (and (or .cse14 (let ((.cse24 (let ((.cse27 (store .cse10 .cse21 .cse30))) (store .cse27 .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse28 4 .cse29))))) (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 ((.cse25 (* |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 .cse24 .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)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25 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 ((.cse26 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store .cse24 .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) 9) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26 1) c_~N~0))))))) (or .cse13 (let ((.cse31 (let ((.cse34 (store .cse10 .cse11 .cse30))) (store .cse34 .cse7 (+ 2 .cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))))) (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 ((.cse32 (* |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 .cse31 .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)) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32 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 ((.cse33 (* |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 .cse31 .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| .cse33)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse33 1) c_~N~0)))))))))) (not .cse0))))))) is different from false [2022-11-19 07:00:10,319 WARN L233 SmtUtils]: Spent 9.99s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:12,745 WARN L233 SmtUtils]: Spent 51.92s on a formula simplification. DAG size of input: 192 DAG size of output: 170 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:24,492 WARN L859 $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 [2022-11-19 07:01:24,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:24,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:24,578 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-19 07:01:24,578 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 [2022-11-19 07:01:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-19 07:01:24,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:24,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028625244] [2022-11-19 07:01:24,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:24,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898561592] [2022-11-19 07:01:24,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898561592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:24,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1320427960] [2022-11-19 07:01:24,583 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:01:24,584 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:24,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:24,585 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:24,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:24,737 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:01:24,737 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 [2022-11-19 07:01:24,755 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 [2022-11-19 07:01:24,774 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 [2022-11-19 07:01:24,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,819 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 [2022-11-19 07:01:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:24,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:24,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:24,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,036 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:01:25,036 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 [2022-11-19 07:01:25,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,134 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 [2022-11-19 07:01:25,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:25,175 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:25,175 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 [2022-11-19 07:01:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:25,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:25,220 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:01:25,221 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 [2022-11-19 07:01:25,358 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:01:29,868 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5414#(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 [2022-11-19 07:01:29,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:29,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:29,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-19 07:01:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289462335] [2022-11-19 07:01:29,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-19 07:01:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-19 07:01:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=951, Unknown=39, NotChecked=198, Total=1332 [2022-11-19 07:01:29,871 INFO L87 Difference]: Start difference. First operand 84 states and 108 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) [2022-11-19 07:01:31,931 WARN L859 $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 [2022-11-19 07:01:46,551 WARN L233 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 80 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:13,839 WARN L233 SmtUtils]: Spent 23.47s on a formula simplification that was a NOOP. DAG size: 201 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:34,085 WARN L233 SmtUtils]: Spent 14.58s on a formula simplification. DAG size of input: 92 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:17,254 INFO L93 Difference]: Finished difference Result 124 states and 152 transitions. [2022-11-19 07:03:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 07:03:17,255 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 [2022-11-19 07:03:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:17,255 INFO L225 Difference]: With dead ends: 124 [2022-11-19 07:03:17,256 INFO L226 Difference]: Without dead ends: 122 [2022-11-19 07:03:17,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 316.6s TimeCoverageRelationStatistics Valid=254, Invalid=1869, Unknown=55, NotChecked=372, Total=2550 [2022-11-19 07:03:17,258 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:17,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 222 Unchecked, 0.3s Time] [2022-11-19 07:03:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-19 07:03:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2022-11-19 07:03:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 91 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2022-11-19 07:03:17,302 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 21 [2022-11-19 07:03:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:17,302 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2022-11-19 07:03:17,302 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) [2022-11-19 07:03:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2022-11-19 07:03:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:03:17,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:17,303 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:17,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:03:17,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:17,504 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1893569587, now seen corresponding path program 10 times [2022-11-19 07:03:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024886269] [2022-11-19 07:03:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:17,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:03:17,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832308306] [2022-11-19 07:03:17,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:03:17,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:17,534 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:03:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:17,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 07:03:17,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:03:17,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:03:18,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024886269] [2022-11-19 07:03:18,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:03:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832308306] [2022-11-19 07:03:18,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832308306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89031542] [2022-11-19 07:03:18,075 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:03:18,076 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:03:18,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:03:18,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:03:18,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:03:18,169 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 07:03:18,169 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 [2022-11-19 07:03:18,315 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:03:18,315 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 [2022-11-19 07:03:18,334 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 [2022-11-19 07:03:18,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,400 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 [2022-11-19 07:03:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,631 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:03:18,632 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 [2022-11-19 07:03:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,742 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 [2022-11-19 07:03:18,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,763 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:18,763 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 [2022-11-19 07:03:18,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,835 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:03:18,835 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 [2022-11-19 07:03:18,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:18,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:18,874 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:18,874 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 [2022-11-19 07:03:18,891 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:19,271 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5947#(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 [2022-11-19 07:03:19,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:03:19,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:03:19,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2022-11-19 07:03:19,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589896641] [2022-11-19 07:03:19,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:19,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:03:19,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:03:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2022-11-19 07:03:19,273 INFO L87 Difference]: Start difference. First operand 92 states and 119 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) [2022-11-19 07:03:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:20,545 INFO L93 Difference]: Finished difference Result 221 states and 249 transitions. [2022-11-19 07:03:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-19 07:03:20,545 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 [2022-11-19 07:03:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:20,547 INFO L225 Difference]: With dead ends: 221 [2022-11-19 07:03:20,547 INFO L226 Difference]: Without dead ends: 210 [2022-11-19 07:03:20,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=876, Invalid=3816, Unknown=0, NotChecked=0, Total=4692 [2022-11-19 07:03:20,549 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 340 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:20,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 91 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:03:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-19 07:03:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 104. [2022-11-19 07:03:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 103 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 136 transitions. [2022-11-19 07:03:20,633 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 136 transitions. Word has length 21 [2022-11-19 07:03:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:20,633 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 136 transitions. [2022-11-19 07:03:20,633 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) [2022-11-19 07:03:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 136 transitions. [2022-11-19 07:03:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:03:20,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:20,634 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:20,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:03:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-19 07:03:20,840 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -926325933, now seen corresponding path program 9 times [2022-11-19 07:03:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:20,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335587916] [2022-11-19 07:03:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:20,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:03:20,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121851122] [2022-11-19 07:03:20,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:03:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:20,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:20,860 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:20,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 07:03:21,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:03:21,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:03:21,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:03:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:03:21,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:03:21,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:21,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335587916] [2022-11-19 07:03:21,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:03:21,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121851122] [2022-11-19 07:03:21,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121851122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:21,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25806017] [2022-11-19 07:03:21,180 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:03:21,180 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:03:21,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:03:21,180 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:03:21,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:03:21,271 INFO L321 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2022-11-19 07:03:21,272 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 [2022-11-19 07:03:21,402 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:03:21,402 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 [2022-11-19 07:03:21,421 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 [2022-11-19 07:03:21,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,466 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 [2022-11-19 07:03:21,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,672 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:03:21,673 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 [2022-11-19 07:03:21,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,772 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 [2022-11-19 07:03:21,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,807 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:21,808 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 [2022-11-19 07:03:21,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,848 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:21,848 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 [2022-11-19 07:03:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:21,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:21,888 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:03:21,888 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 [2022-11-19 07:03:21,988 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:22,389 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6666#(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 [2022-11-19 07:03:22,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:03:22,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:03:22,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-19 07:03:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463664965] [2022-11-19 07:03:22,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 07:03:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 07:03:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:03:22,391 INFO L87 Difference]: Start difference. First operand 104 states and 136 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) [2022-11-19 07:03:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:23,323 INFO L93 Difference]: Finished difference Result 183 states and 214 transitions. [2022-11-19 07:03:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 07:03:23,324 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 [2022-11-19 07:03:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:23,325 INFO L225 Difference]: With dead ends: 183 [2022-11-19 07:03:23,325 INFO L226 Difference]: Without dead ends: 141 [2022-11-19 07:03:23,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:03:23,327 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 124 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:23,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 167 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:03:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-19 07:03:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 81. [2022-11-19 07:03:23,377 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) [2022-11-19 07:03:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2022-11-19 07:03:23,378 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 21 [2022-11-19 07:03:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:23,378 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2022-11-19 07:03:23,378 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) [2022-11-19 07:03:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2022-11-19 07:03:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:03:23,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:23,379 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:23,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:03:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-19 07:03:23,579 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 999896621, now seen corresponding path program 10 times [2022-11-19 07:03:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966542402] [2022-11-19 07:03:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:23,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:03:23,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583697307] [2022-11-19 07:03:23,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:03:23,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:23,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:23,598 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:23,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85767fdd-f158-444b-a2e9-2d3f9dc57ff8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-19 07:03:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:24,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 07:03:24,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:24,145 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 [2022-11-19 07:03:24,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,152 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 [2022-11-19 07:03:24,155 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 [2022-11-19 07:03:24,158 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 [2022-11-19 07:03:24,165 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 [2022-11-19 07:03:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,194 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 [2022-11-19 07:03:24,246 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 [2022-11-19 07:03:24,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:24,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,260 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 [2022-11-19 07:03:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,356 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 [2022-11-19 07:03:24,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,465 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 [2022-11-19 07:03:24,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:24,561 INFO L321 Elim1Store]: treesize reduction 38, result has 19.1 percent of original size [2022-11-19 07:03:24,561 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 [2022-11-19 07:03:24,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:24,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:24,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:24,658 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:03:24,658 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 [2022-11-19 07:03:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:25,245 INFO L328 TraceCheckSpWp]: Computing backward predicates...