./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7 --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 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:38:57,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:38:57,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:38:57,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:38:57,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:38:57,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:38:57,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:38:57,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:38:57,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:38:57,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:38:57,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:38:57,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:38:57,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:38:57,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:38:57,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:38:57,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:38:57,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:38:57,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:38:57,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:38:57,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:38:57,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:38:57,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:38:57,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:38:57,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:38:57,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:38:57,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:38:57,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:38:57,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:38:57,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:38:57,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:38:57,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:38:57,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:38:57,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:38:57,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:38:57,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:38:57,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:38:57,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:38:57,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:38:57,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:38:57,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:38:57,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:38:57,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:38:57,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:38:57,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:38:57,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:38:57,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:38:57,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:38:57,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:38:57,307 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:38:57,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:38:57,307 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:38:57,308 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:38:57,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:38:57,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:38:57,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:38:57,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:38:57,309 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:38:57,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:38:57,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:38:57,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:38:57,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:38:57,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:38:57,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:38:57,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:38:57,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:38:57,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:38:57,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:38:57,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:38:57,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:38:57,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:38:57,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:38:57,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:38:57,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:38:57,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:38:57,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:57,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:38:57,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:38:57,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:38:57,316 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:38:57,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:38:57,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:38:57,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:38:57,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:38:57,317 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2021-11-25 19:38:57,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:38:57,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:38:57,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:38:57,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:38:57,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:38:57,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2021-11-25 19:38:57,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/data/8ace0b875/f670013bb5c44a82ac5e067f0e368109/FLAGd16c6714c [2021-11-25 19:38:58,230 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:38:58,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/sv-benchmarks/c/array-patterns/array3_pattern.c [2021-11-25 19:38:58,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/data/8ace0b875/f670013bb5c44a82ac5e067f0e368109/FLAGd16c6714c [2021-11-25 19:38:58,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/data/8ace0b875/f670013bb5c44a82ac5e067f0e368109 [2021-11-25 19:38:58,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:38:58,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:38:58,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:58,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:38:58,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:38:58,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:58,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fea2b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58, skipping insertion in model container [2021-11-25 19:38:58,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:58,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:38:58,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:38:58,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2021-11-25 19:38:58,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:58,919 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:38:58,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2021-11-25 19:38:58,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:58,986 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:38:58,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58 WrapperNode [2021-11-25 19:38:58,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:58,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:58,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:38:58,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:38:58,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,034 INFO L137 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2021-11-25 19:38:59,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:59,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:38:59,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:38:59,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:38:59,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:38:59,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:38:59,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:38:59,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:38:59,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (1/1) ... [2021-11-25 19:38:59,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:38:59,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:38:59,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:38:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:38:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:38:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:38:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:38:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:38:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:38:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure square [2021-11-25 19:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2021-11-25 19:38:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:38:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:38:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:38:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:38:59,206 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:38:59,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:38:59,375 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:38:59,400 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:38:59,400 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:38:59,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:59 BoogieIcfgContainer [2021-11-25 19:38:59,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:38:59,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:38:59,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:38:59,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:38:59,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:38:58" (1/3) ... [2021-11-25 19:38:59,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6b6ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:59, skipping insertion in model container [2021-11-25 19:38:59,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:58" (2/3) ... [2021-11-25 19:38:59,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6b6ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:59, skipping insertion in model container [2021-11-25 19:38:59,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:59" (3/3) ... [2021-11-25 19:38:59,411 INFO L111 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2021-11-25 19:38:59,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:38:59,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:38:59,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:38:59,471 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:38:59,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:38:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:38:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:38:59,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:59,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:59,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash 168211832, now seen corresponding path program 1 times [2021-11-25 19:38:59,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:59,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488533069] [2021-11-25 19:38:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:59,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:59,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:59,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488533069] [2021-11-25 19:38:59,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488533069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:59,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:59,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:38:59,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916053054] [2021-11-25 19:38:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:59,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:38:59,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:38:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:38:59,748 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:38:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:59,780 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-11-25 19:38:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:38:59,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-25 19:38:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:59,789 INFO L225 Difference]: With dead ends: 36 [2021-11-25 19:38:59,790 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 19:38:59,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:38:59,796 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:59,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:38:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 19:38:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 19:38:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:38:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 19:38:59,832 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2021-11-25 19:38:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:59,834 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 19:38:59,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:38:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 19:38:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:38:59,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:59,836 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:59,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:38:59,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:59,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1604099434, now seen corresponding path program 1 times [2021-11-25 19:38:59,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:59,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462935761] [2021-11-25 19:38:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:59,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:59,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:38:59,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587172054] [2021-11-25 19:38:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:59,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:38:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:38:59,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:38:59,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:38:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:59,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:38:59,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:39:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:39:00,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:39:00,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:00,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462935761] [2021-11-25 19:39:00,201 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:39:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587172054] [2021-11-25 19:39:00,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587172054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:39:00,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:39:00,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:39:00,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110092606] [2021-11-25 19:39:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:39:00,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:39:00,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:39:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:39:00,206 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:39:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:00,261 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 19:39:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:39:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-25 19:39:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:00,266 INFO L225 Difference]: With dead ends: 27 [2021-11-25 19:39:00,266 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:39:00,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:39:00,268 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:00,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:39:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:39:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-25 19:39:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:39:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-25 19:39:00,280 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-11-25 19:39:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:00,281 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-25 19:39:00,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:39:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-25 19:39:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:39:00,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:00,283 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:00,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:39:00,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:00,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:39:00,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -874793495, now seen corresponding path program 1 times [2021-11-25 19:39:00,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239717709] [2021-11-25 19:39:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:00,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:00,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:39:00,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250637366] [2021-11-25 19:39:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:00,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:39:00,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:39:00,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:39:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:39:00,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:39:00,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:39:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:39:00,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:39:00,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:00,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239717709] [2021-11-25 19:39:00,734 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:39:00,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250637366] [2021-11-25 19:39:00,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250637366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:39:00,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:39:00,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:39:00,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128435662] [2021-11-25 19:39:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:39:00,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:39:00,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:39:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:39:00,740 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 19:39:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:00,803 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-11-25 19:39:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:39:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2021-11-25 19:39:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:00,813 INFO L225 Difference]: With dead ends: 45 [2021-11-25 19:39:00,813 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 19:39:00,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:39:00,815 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:00,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:39:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 19:39:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-11-25 19:39:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:39:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-25 19:39:00,822 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 25 [2021-11-25 19:39:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:00,822 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-25 19:39:00,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 19:39:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-25 19:39:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:39:00,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:00,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:00,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 19:39:01,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:01,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:39:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash -578077241, now seen corresponding path program 1 times [2021-11-25 19:39:01,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019672997] [2021-11-25 19:39:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:01,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:01,091 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:39:01,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656039156] [2021-11-25 19:39:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:01,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:39:01,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:39:01,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:39:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:39:01,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-25 19:39:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:39:01,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 19:39:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:01,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 19:39:01,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:39:01,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:39:01,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:39:01,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:01,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:02,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:02,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:02,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 158 [2021-11-25 19:39:02,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 145 [2021-11-25 19:39:02,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:02,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 136 [2021-11-25 19:39:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:02,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2021-11-25 19:39:03,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:03,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:03,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2021-11-25 19:39:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:39:03,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:39:08,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019672997] [2021-11-25 19:39:08,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:39:08,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656039156] [2021-11-25 19:39:08,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656039156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:39:08,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311645145] [2021-11-25 19:39:08,152 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:39:08,153 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:39:08,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:39:08,162 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:39:08,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:39:08,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,330 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:39:08,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:39:08,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 19:39:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:39:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:08,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:08,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:08,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:08,626 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 19:39:08,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 405 treesize of output 403 [2021-11-25 19:39:08,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:08,980 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:39:08,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:39:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,375 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:39:09,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 986 treesize of output 628 [2021-11-25 19:39:09,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,477 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:09,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 157 treesize of output 118 [2021-11-25 19:39:09,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,750 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,804 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:09,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 170 treesize of output 83 [2021-11-25 19:39:09,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:09,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:09,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 131 treesize of output 60 [2021-11-25 19:39:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,014 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:10,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 131 treesize of output 60 [2021-11-25 19:39:10,040 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:10,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 281 [2021-11-25 19:39:10,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 287 treesize of output 211 [2021-11-25 19:39:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 79 treesize of output 55 [2021-11-25 19:39:10,286 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:10,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 106 treesize of output 67 [2021-11-25 19:39:10,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,394 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:10,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 98 treesize of output 59 [2021-11-25 19:39:10,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:10,442 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:11,916 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 19:39:11,945 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:39:11,989 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:39:14,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '555#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:39:14,916 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:39:14,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:39:14,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-25 19:39:14,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100464089] [2021-11-25 19:39:14,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:39:14,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:39:14,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:39:14,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 19:39:14,920 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:39:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:15,002 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2021-11-25 19:39:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 19:39:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2021-11-25 19:39:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:15,005 INFO L225 Difference]: With dead ends: 44 [2021-11-25 19:39:15,005 INFO L226 Difference]: Without dead ends: 41 [2021-11-25 19:39:15,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 19:39:15,010 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:15,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 111 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 69 Unchecked, 0.0s Time] [2021-11-25 19:39:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-25 19:39:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-11-25 19:39:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 19:39:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-11-25 19:39:15,019 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 26 [2021-11-25 19:39:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:15,020 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-11-25 19:39:15,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:39:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-11-25 19:39:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 19:39:15,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:15,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:15,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:39:15,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:15,234 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:39:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash 30192041, now seen corresponding path program 2 times [2021-11-25 19:39:15,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:15,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307327787] [2021-11-25 19:39:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:15,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:15,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:39:15,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572372680] [2021-11-25 19:39:15,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:39:15,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:39:15,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:39:15,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:39:15,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:39:15,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:39:15,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:39:15,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:39:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:39:15,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:39:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:39:15,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:15,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307327787] [2021-11-25 19:39:15,598 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:39:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572372680] [2021-11-25 19:39:15,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572372680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:39:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273530719] [2021-11-25 19:39:15,604 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:39:15,604 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:39:15,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:39:15,604 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:39:15,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:39:15,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,736 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:39:15,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:39:15,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 19:39:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:39:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:15,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:15,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:15,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:15,988 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 19:39:15,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 405 treesize of output 403 [2021-11-25 19:39:16,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:16,296 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:39:16,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:39:16,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,721 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:39:16,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 494 [2021-11-25 19:39:16,782 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:16,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,824 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:16,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 110 treesize of output 71 [2021-11-25 19:39:16,886 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:16,901 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:16,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:16,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 133 treesize of output 121 [2021-11-25 19:39:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,036 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:17,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 565 treesize of output 481 [2021-11-25 19:39:17,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:17,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 72 [2021-11-25 19:39:17,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:17,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 61 [2021-11-25 19:39:17,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 253 treesize of output 146 [2021-11-25 19:39:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:17,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 65 [2021-11-25 19:39:17,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:17,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 54 [2021-11-25 19:39:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:17,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 50 [2021-11-25 19:39:20,344 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 19:39:20,369 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:39:20,410 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:39:22,094 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '860#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:39:22,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:39:22,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:39:22,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-25 19:39:22,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703356620] [2021-11-25 19:39:22,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:39:22,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:39:22,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:39:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:39:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:39:22,098 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 19:39:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:39:22,301 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-11-25 19:39:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:39:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 27 [2021-11-25 19:39:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:39:22,303 INFO L225 Difference]: With dead ends: 69 [2021-11-25 19:39:22,303 INFO L226 Difference]: Without dead ends: 66 [2021-11-25 19:39:22,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:39:22,305 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:39:22,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 60 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:39:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-25 19:39:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2021-11-25 19:39:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:39:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2021-11-25 19:39:22,320 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 27 [2021-11-25 19:39:22,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:39:22,321 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2021-11-25 19:39:22,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 19:39:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2021-11-25 19:39:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:39:22,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:39:22,323 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:39:22,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:39:22,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:22,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:39:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:39:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2115367227, now seen corresponding path program 1 times [2021-11-25 19:39:22,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:39:22,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509318617] [2021-11-25 19:39:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:22,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:39:22,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:39:22,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391991371] [2021-11-25 19:39:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:39:22,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:39:22,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:39:22,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:39:22,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:39:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:39:22,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-25 19:39:22,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:39:22,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 19:39:22,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:22,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 19:39:22,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:39:22,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:39:22,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:39:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 167 [2021-11-25 19:39:23,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 159 [2021-11-25 19:39:23,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:23,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 140 [2021-11-25 19:39:23,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:23,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2021-11-25 19:39:23,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:23,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 29 [2021-11-25 19:39:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 160 [2021-11-25 19:39:23,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2021-11-25 19:39:23,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:23,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 136 [2021-11-25 19:39:23,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:23,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2021-11-25 19:39:23,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:23,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:23,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 27 [2021-11-25 19:39:24,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:24,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:24,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2021-11-25 19:39:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:39:25,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:39:46,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:39:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509318617] [2021-11-25 19:39:46,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:39:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391991371] [2021-11-25 19:39:46,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391991371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:39:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1918554520] [2021-11-25 19:39:46,415 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:39:46,416 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:39:46,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:39:46,416 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:39:46,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:39:46,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:46,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:46,692 INFO L354 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2021-11-25 19:39:46,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2021-11-25 19:39:46,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:46,976 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:39:46,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:39:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:47,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:39:47,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:47,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:47,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:47,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:47,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:47,484 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 19:39:47,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 405 treesize of output 403 [2021-11-25 19:39:47,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:47,675 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:39:47,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:39:47,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:47,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,483 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:39:48,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 984 treesize of output 626 [2021-11-25 19:39:48,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:48,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:48,599 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:48,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,680 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:48,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 105 treesize of output 66 [2021-11-25 19:39:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,795 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:48,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 131 treesize of output 92 [2021-11-25 19:39:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:48,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 92 [2021-11-25 19:39:48,873 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:48,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:48,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 496 treesize of output 452 [2021-11-25 19:39:49,025 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:49,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:49,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:49,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:49,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 78 [2021-11-25 19:39:50,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:50,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:50,750 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:39:50,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 986 treesize of output 628 [2021-11-25 19:39:50,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:50,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:50,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:50,911 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:50,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 128 treesize of output 89 [2021-11-25 19:39:50,958 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:50,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:50,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 59 treesize of output 35 [2021-11-25 19:39:51,028 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:51,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,139 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:39:51,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 108 treesize of output 69 [2021-11-25 19:39:51,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:51,223 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:51,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:39:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:39:51,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 240 [2021-11-25 19:39:51,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:39:51,385 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:39:51,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 434 treesize of output 374 [2021-11-25 19:39:53,933 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 19:39:53,960 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:39:54,001 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:40:02,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1241#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:40:02,015 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:40:02,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:40:02,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-25 19:40:02,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788921594] [2021-11-25 19:40:02,015 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:40:02,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 19:40:02,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 19:40:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2049, Unknown=5, NotChecked=0, Total=2256 [2021-11-25 19:40:02,018 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:40:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:03,146 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-11-25 19:40:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:40:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 32 [2021-11-25 19:40:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:03,150 INFO L225 Difference]: With dead ends: 66 [2021-11-25 19:40:03,150 INFO L226 Difference]: Without dead ends: 63 [2021-11-25 19:40:03,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=238, Invalid=2307, Unknown=5, NotChecked=0, Total=2550 [2021-11-25 19:40:03,152 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:03,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2021-11-25 19:40:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-25 19:40:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2021-11-25 19:40:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-25 19:40:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-25 19:40:03,164 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 32 [2021-11-25 19:40:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:03,164 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-25 19:40:03,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:40:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-25 19:40:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:40:03,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:03,166 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:03,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:40:03,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:40:03,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1089524180, now seen corresponding path program 3 times [2021-11-25 19:40:03,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:03,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442446128] [2021-11-25 19:40:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:03,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:03,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:40:03,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699358385] [2021-11-25 19:40:03,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:40:03,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:03,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:40:03,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:40:03,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:40:03,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:40:03,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:40:03,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:40:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:40:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:40:03,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:40:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:40:04,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442446128] [2021-11-25 19:40:04,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:40:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699358385] [2021-11-25 19:40:04,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699358385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:40:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496617639] [2021-11-25 19:40:04,058 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:40:04,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:40:04,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:40:04,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:40:04,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:40:04,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,384 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:40:04,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:40:04,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 19:40:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-25 19:40:04,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:04,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:04,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:04,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:04,749 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-25 19:40:04,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 405 treesize of output 403 [2021-11-25 19:40:04,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:04,897 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:40:04,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:40:05,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,583 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:40:05,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 984 treesize of output 626 [2021-11-25 19:40:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:40:05,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 155 treesize of output 143 [2021-11-25 19:40:05,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:05,827 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:05,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:05,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:40:05,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 126 treesize of output 57 [2021-11-25 19:40:05,940 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:05,969 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,032 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:40:06,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 164 treesize of output 80 [2021-11-25 19:40:06,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 126 treesize of output 57 [2021-11-25 19:40:06,228 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 105 treesize of output 66 [2021-11-25 19:40:06,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:06,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 105 treesize of output 66 [2021-11-25 19:40:06,417 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:40:06,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 313 [2021-11-25 19:40:06,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:06,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 290 treesize of output 213 [2021-11-25 19:40:06,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,528 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:06,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:40:08,108 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:40:08,112 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:40:08,144 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:40:12,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1642#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:40:12,795 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:40:12,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:40:12,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-25 19:40:12,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788380486] [2021-11-25 19:40:12,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:40:12,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:40:12,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:40:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2021-11-25 19:40:12,797 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 19:40:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:13,191 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-11-25 19:40:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:40:13,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 35 [2021-11-25 19:40:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:13,194 INFO L225 Difference]: With dead ends: 62 [2021-11-25 19:40:13,194 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 19:40:13,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:40:13,196 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:13,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 69 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:40:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 19:40:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-11-25 19:40:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:40:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-11-25 19:40:13,203 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 35 [2021-11-25 19:40:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:13,203 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-11-25 19:40:13,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 19:40:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-11-25 19:40:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:40:13,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:13,205 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:13,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:40:13,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:13,418 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2056583306, now seen corresponding path program 4 times [2021-11-25 19:40:13,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:13,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503285404] [2021-11-25 19:40:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:13,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:40:13,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477743788] [2021-11-25 19:40:13,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:40:13,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:40:13,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:40:13,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:40:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:13,752 WARN L261 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-25 19:40:13,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:40:13,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 19:40:13,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:13,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-11-25 19:40:13,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2021-11-25 19:40:13,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-25 19:40:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:14,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:14,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 48 treesize of output 39 [2021-11-25 19:40:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 174 [2021-11-25 19:40:15,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 159 [2021-11-25 19:40:15,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,371 INFO L354 Elim1Store]: treesize reduction 105, result has 19.8 percent of original size [2021-11-25 19:40:15,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 176 [2021-11-25 19:40:15,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,489 INFO L354 Elim1Store]: treesize reduction 75, result has 25.7 percent of original size [2021-11-25 19:40:15,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-11-25 19:40:15,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:40:15,561 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-25 19:40:15,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 99 [2021-11-25 19:40:37,446 INFO L354 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2021-11-25 19:40:37,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 65 [2021-11-25 19:40:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:40:38,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:41:12,667 WARN L227 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:41:12,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503285404] [2021-11-25 19:41:12,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:41:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477743788] [2021-11-25 19:41:12,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477743788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:41:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1203629110] [2021-11-25 19:41:12,670 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:41:12,671 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:41:12,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:41:12,671 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:41:12,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:41:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,904 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:41:12,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:41:12,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 19:41:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:12,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 19:41:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:13,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:13,146 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 19:41:13,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 412 treesize of output 398 [2021-11-25 19:41:13,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:13,232 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:41:13,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:41:13,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,840 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:41:13,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 984 treesize of output 626 [2021-11-25 19:41:13,899 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:13,934 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:13,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:13,991 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:41:13,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 129 treesize of output 90 [2021-11-25 19:41:14,019 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:14,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 81 [2021-11-25 19:41:14,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,149 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:41:14,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 120 treesize of output 81 [2021-11-25 19:41:14,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 71 treesize of output 47 [2021-11-25 19:41:14,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,246 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 146 treesize of output 85 [2021-11-25 19:41:14,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 112 treesize of output 66 [2021-11-25 19:41:14,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 44 [2021-11-25 19:41:14,387 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,412 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,439 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,459 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,482 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,528 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:14,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:14,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:41:14,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 699 treesize of output 452 [2021-11-25 19:41:16,654 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 19:41:16,676 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:41:16,708 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:41:25,424 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2025#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:41:25,424 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:41:25,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:41:25,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-11-25 19:41:25,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597585273] [2021-11-25 19:41:25,425 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:41:25,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 19:41:25,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 19:41:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3241, Unknown=7, NotChecked=0, Total=3540 [2021-11-25 19:41:25,427 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:41:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:27,950 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-11-25 19:41:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 19:41:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2021-11-25 19:41:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:27,952 INFO L225 Difference]: With dead ends: 65 [2021-11-25 19:41:27,952 INFO L226 Difference]: Without dead ends: 62 [2021-11-25 19:41:27,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=377, Invalid=4038, Unknown=7, NotChecked=0, Total=4422 [2021-11-25 19:41:27,954 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:27,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 150 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 0 Unknown, 70 Unchecked, 0.4s Time] [2021-11-25 19:41:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-25 19:41:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-11-25 19:41:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:41:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-11-25 19:41:27,963 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 36 [2021-11-25 19:41:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:27,964 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-11-25 19:41:27,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:41:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-11-25 19:41:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:41:27,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:27,966 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:27,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 19:41:28,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:28,170 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:41:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash 801667564, now seen corresponding path program 5 times [2021-11-25 19:41:28,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:28,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044813175] [2021-11-25 19:41:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:28,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:28,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:41:28,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881653031] [2021-11-25 19:41:28,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:41:28,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:28,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:41:28,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:41:28,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:41:28,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:41:28,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:41:28,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:41:28,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:41:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:41:28,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:41:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:41:29,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:29,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044813175] [2021-11-25 19:41:29,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:41:29,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881653031] [2021-11-25 19:41:29,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881653031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:41:29,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2057705752] [2021-11-25 19:41:29,162 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:41:29,162 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:41:29,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:41:29,162 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:41:29,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:41:29,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,405 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-25 19:41:29,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-25 19:41:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-11-25 19:41:29,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-25 19:41:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:29,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:29,656 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-25 19:41:29,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 412 treesize of output 398 [2021-11-25 19:41:29,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:29,763 INFO L354 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2021-11-25 19:41:29,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2021-11-25 19:41:29,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:29,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,203 INFO L354 Elim1Store]: treesize reduction 181, result has 50.9 percent of original size [2021-11-25 19:41:30,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 984 treesize of output 626 [2021-11-25 19:41:30,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:41:30,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 155 treesize of output 143 [2021-11-25 19:41:30,363 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 157 treesize of output 88 [2021-11-25 19:41:30,507 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,698 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 19:41:30,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 205 treesize of output 121 [2021-11-25 19:41:30,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:41:30,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 157 treesize of output 88 [2021-11-25 19:41:30,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,934 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 46 [2021-11-25 19:41:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:30,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:30,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 65 [2021-11-25 19:41:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 299 treesize of output 267 [2021-11-25 19:41:31,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:31,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 65 [2021-11-25 19:41:31,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 74 treesize of output 43 [2021-11-25 19:41:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 114 treesize of output 75 [2021-11-25 19:41:31,101 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:31,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 115 treesize of output 76 [2021-11-25 19:41:31,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:31,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:31,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:31,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:41:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:31,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 115 treesize of output 76 [2021-11-25 19:41:31,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:32,753 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-25 19:41:32,780 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 36 for LOIs [2021-11-25 19:41:32,816 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:41:37,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2454#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2021-11-25 19:41:37,078 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:41:37,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:41:37,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-25 19:41:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870792966] [2021-11-25 19:41:37,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:41:37,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:41:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:41:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:41:37,081 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-25 19:41:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:38,034 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2021-11-25 19:41:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:41:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 37 [2021-11-25 19:41:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:38,036 INFO L225 Difference]: With dead ends: 87 [2021-11-25 19:41:38,036 INFO L226 Difference]: Without dead ends: 84 [2021-11-25 19:41:38,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 19:41:38,037 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:38,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 113 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:41:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-25 19:41:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2021-11-25 19:41:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 19:41:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-11-25 19:41:38,067 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 37 [2021-11-25 19:41:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:38,068 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-11-25 19:41:38,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-25 19:41:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-11-25 19:41:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:41:38,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:38,072 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:38,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:41:38,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:38,298 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:41:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2143999722, now seen corresponding path program 2 times [2021-11-25 19:41:38,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:38,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23935642] [2021-11-25 19:41:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:38,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:38,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:41:38,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582780697] [2021-11-25 19:41:38,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:41:38,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:38,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:41:38,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:41:38,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b7e6c5-7297-434e-9f0e-833183c7550f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:41:38,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:41:38,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:41:38,753 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-25 19:41:38,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:41:38,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 19:41:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:38,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-25 19:41:38,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-11-25 19:41:38,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:41:38,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:41:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:39,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2021-11-25 19:41:39,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-25 19:41:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:39,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:41:39,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:39,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-25 19:41:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,460 INFO L354 Elim1Store]: treesize reduction 114, result has 22.4 percent of original size [2021-11-25 19:41:42,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 244 treesize of output 219 [2021-11-25 19:41:42,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 185 [2021-11-25 19:41:42,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,610 INFO L354 Elim1Store]: treesize reduction 92, result has 29.8 percent of original size [2021-11-25 19:41:42,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 139 treesize of output 193 [2021-11-25 19:41:42,629 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:41:42,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:41:42,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:41:42,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 19:42:46,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,480 INFO L244 Elim1Store]: Index analysis took 108 ms [2021-11-25 19:42:46,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:42:46,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:42:46,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:46,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:42:51,485 INFO L354 Elim1Store]: treesize reduction 1135, result has 17.2 percent of original size [2021-11-25 19:42:51,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 11 disjoint index pairs (out of 105 index pairs), introduced 16 new quantified variables, introduced 77 case distinctions, treesize of input 489 treesize of output 604 [2021-11-25 19:42:51,903 INFO L354 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2021-11-25 19:42:51,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 542 treesize of output 536 [2021-11-25 19:43:01,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:01,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:01,936 INFO L354 Elim1Store]: treesize reduction 148, result has 49.1 percent of original size [2021-11-25 19:43:01,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 176 [2021-11-25 19:43:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:03,399 INFO L354 Elim1Store]: treesize reduction 88, result has 54.2 percent of original size [2021-11-25 19:43:03,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 134 [2021-11-25 19:43:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:05,181 INFO L354 Elim1Store]: treesize reduction 70, result has 52.4 percent of original size [2021-11-25 19:43:05,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 105 [2021-11-25 19:43:06,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:06,794 INFO L354 Elim1Store]: treesize reduction 191, result has 0.5 percent of original size [2021-11-25 19:43:06,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 1 [2021-11-25 19:43:06,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:07,306 INFO L354 Elim1Store]: treesize reduction 282, result has 9.0 percent of original size [2021-11-25 19:43:07,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 61 [2021-11-25 19:43:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:08,274 INFO L354 Elim1Store]: treesize reduction 96, result has 52.5 percent of original size [2021-11-25 19:43:08,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 136 [2021-11-25 19:43:13,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:43:16,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:16,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:16,385 INFO L354 Elim1Store]: treesize reduction 151, result has 49.0 percent of original size [2021-11-25 19:43:16,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 14 case distinctions, treesize of input 73 treesize of output 179 [2021-11-25 19:43:17,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:43:17,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:17,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:17,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:17,605 INFO L354 Elim1Store]: treesize reduction 191, result has 0.5 percent of original size [2021-11-25 19:43:17,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 68 treesize of output 35 [2021-11-25 19:43:17,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:43:19,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:19,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:19,527 INFO L354 Elim1Store]: treesize reduction 244, result has 30.3 percent of original size [2021-11-25 19:43:19,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 14 case distinctions, treesize of input 84 treesize of output 142 [2021-11-25 19:43:20,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:43:21,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:21,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:21,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:21,133 INFO L354 Elim1Store]: treesize reduction 236, result has 0.4 percent of original size [2021-11-25 19:43:21,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 79 treesize of output 37 [2021-11-25 19:43:21,315 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:43:24,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:24,768 INFO L354 Elim1Store]: treesize reduction 84, result has 56.3 percent of original size [2021-11-25 19:43:24,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 141 [2021-11-25 19:43:25,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:26,037 INFO L354 Elim1Store]: treesize reduction 349, result has 0.3 percent of original size [2021-11-25 19:43:26,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 79 treesize of output 1 [2021-11-25 19:43:42,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:43:42,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:43:43,636 INFO L354 Elim1Store]: treesize reduction 229, result has 44.8 percent of original size [2021-11-25 19:43:43,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 2118 treesize of output 2206