./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array12_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array12_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:33:13,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:33:13,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:33:13,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:33:13,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:33:13,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:33:13,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:33:13,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:33:13,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:33:13,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:33:13,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:33:13,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:33:13,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:33:13,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:33:13,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:33:13,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:33:13,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:33:13,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:33:13,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:33:13,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:33:13,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:33:13,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:33:13,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:33:13,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:33:13,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:33:13,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:33:13,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:33:13,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:33:13,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:33:13,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:33:13,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:33:13,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:33:13,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:33:13,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:33:13,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:33:13,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:33:13,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:33:13,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:33:13,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:33:13,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:33:13,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:33:13,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:33:13,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:33:13,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:33:13,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:33:13,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:33:13,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:33:13,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:33:13,288 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:33:13,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:33:13,288 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:33:13,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:33:13,289 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:33:13,289 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:33:13,289 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:33:13,289 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:33:13,290 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:33:13,290 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:33:13,290 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:33:13,291 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:33:13,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:33:13,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:33:13,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:33:13,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:33:13,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:33:13,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:33:13,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:33:13,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:33:13,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:33:13,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:33:13,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:33:13,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:33:13,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:33:13,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:33:13,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:13,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:33:13,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:33:13,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:33:13,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:33:13,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:33:13,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:33:13,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:33:13,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:33:13,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b [2022-11-03 02:33:13,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:33:13,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:33:13,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:33:13,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:33:13,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:33:13,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-patterns/array12_pattern.c [2022-11-03 02:33:13,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/data/a87efa082/c4d6fb01d3fd4e55ade0d56b8e8ae5b3/FLAG6246ef5cc [2022-11-03 02:33:14,385 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:33:14,388 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/sv-benchmarks/c/array-patterns/array12_pattern.c [2022-11-03 02:33:14,398 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/data/a87efa082/c4d6fb01d3fd4e55ade0d56b8e8ae5b3/FLAG6246ef5cc [2022-11-03 02:33:14,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/data/a87efa082/c4d6fb01d3fd4e55ade0d56b8e8ae5b3 [2022-11-03 02:33:14,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:33:14,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:33:14,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:14,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:33:14,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:33:14,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:14" (1/1) ... [2022-11-03 02:33:14,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a298c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:14, skipping insertion in model container [2022-11-03 02:33:14,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:14" (1/1) ... [2022-11-03 02:33:14,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:33:14,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:33:15,060 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_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/sv-benchmarks/c/array-patterns/array12_pattern.c[1349,1362] [2022-11-03 02:33:15,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:15,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:33:15,105 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_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/sv-benchmarks/c/array-patterns/array12_pattern.c[1349,1362] [2022-11-03 02:33:15,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:15,130 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:33:15,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15 WrapperNode [2022-11-03 02:33:15,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:15,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:15,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:33:15,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:33:15,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,169 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2022-11-03 02:33:15,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:15,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:33:15,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:33:15,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:33:15,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:33:15,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:33:15,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:33:15,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:33:15,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (1/1) ... [2022-11-03 02:33:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:15,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:15,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:33:15,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:33:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:33:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:33:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:33:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:33:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:33:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:33:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:33:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:33:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:33:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:33:15,382 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:33:15,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:33:15,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:33:15,758 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:33:15,769 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 02:33:15,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:15 BoogieIcfgContainer [2022-11-03 02:33:15,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:33:15,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:33:15,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:33:15,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:33:15,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:33:14" (1/3) ... [2022-11-03 02:33:15,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2cac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:15, skipping insertion in model container [2022-11-03 02:33:15,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:15" (2/3) ... [2022-11-03 02:33:15,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2cac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:15, skipping insertion in model container [2022-11-03 02:33:15,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:15" (3/3) ... [2022-11-03 02:33:15,786 INFO L112 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2022-11-03 02:33:15,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:33:15,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:33:15,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:33:15,912 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41084b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:33:15,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:33:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:33:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:33:15,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:15,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:15,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -345104842, now seen corresponding path program 1 times [2022-11-03 02:33:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:15,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280342896] [2022-11-03 02:33:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:16,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:16,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995158648] [2022-11-03 02:33:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:16,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:16,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:16,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:33:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:16,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:33:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:16,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:16,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:16,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280342896] [2022-11-03 02:33:16,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:33:16,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995158648] [2022-11-03 02:33:16,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995158648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:16,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:16,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:33:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619598560] [2022-11-03 02:33:16,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:33:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:33:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:33:16,356 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-11-03 02:33:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:16,415 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-03 02:33:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:33:16,418 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 [2022-11-03 02:33:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:16,425 INFO L225 Difference]: With dead ends: 28 [2022-11-03 02:33:16,426 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 02:33:16,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:33:16,433 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:16,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:33:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 02:33:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-03 02:33:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:33:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-11-03 02:33:16,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2022-11-03 02:33:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:16,489 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-11-03 02:33:16,489 INFO L496 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) [2022-11-03 02:33:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-11-03 02:33:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:33:16,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:16,492 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:16,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:33:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:16,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1899476879, now seen corresponding path program 1 times [2022-11-03 02:33:16,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:16,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589916810] [2022-11-03 02:33:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:16,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:16,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:16,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539372633] [2022-11-03 02:33:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:16,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:16,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:16,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:16,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:33:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:16,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:33:16,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:33:16,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:16,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589916810] [2022-11-03 02:33:16,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:33:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539372633] [2022-11-03 02:33:16,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539372633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:16,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:16,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:33:16,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251339681] [2022-11-03 02:33:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:16,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:33:16,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:33:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:33:16,908 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:33:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:17,094 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-11-03 02:33:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:33:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-03 02:33:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:17,096 INFO L225 Difference]: With dead ends: 37 [2022-11-03 02:33:17,096 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:33:17,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:17,098 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:17,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:33:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:33:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-03 02:33:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:33:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-03 02:33:17,108 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2022-11-03 02:33:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:17,108 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-03 02:33:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:33:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-03 02:33:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:33:17,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:17,110 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:17,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:17,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:33:17,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 980269376, now seen corresponding path program 1 times [2022-11-03 02:33:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:17,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738528544] [2022-11-03 02:33:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:17,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:17,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:17,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331589664] [2022-11-03 02:33:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:17,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:17,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:17,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:33:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:17,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:33:17,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:33:17,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:17,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738528544] [2022-11-03 02:33:17,542 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:33:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331589664] [2022-11-03 02:33:17,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331589664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:17,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:17,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:33:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653190372] [2022-11-03 02:33:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:33:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:33:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:33:17,545 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:33:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:17,630 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2022-11-03 02:33:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:33:17,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-11-03 02:33:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:17,632 INFO L225 Difference]: With dead ends: 40 [2022-11-03 02:33:17,632 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:33:17,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:33:17,634 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:17,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:33:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-03 02:33:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:33:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-03 02:33:17,641 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 23 [2022-11-03 02:33:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:17,641 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-03 02:33:17,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:33:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-03 02:33:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:33:17,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:17,643 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:17,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:17,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:17,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1640466973, now seen corresponding path program 1 times [2022-11-03 02:33:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667515830] [2022-11-03 02:33:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:17,865 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:17,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119628130] [2022-11-03 02:33:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:17,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:17,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:17,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:33:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:18,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:33:18,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:18,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 86 [2022-11-03 02:33:18,665 INFO L356 Elim1Store]: treesize reduction 166, result has 0.6 percent of original size [2022-11-03 02:33:18,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 178 [2022-11-03 02:33:18,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:33:19,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 283 treesize of output 271 [2022-11-03 02:33:19,506 INFO L356 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-11-03 02:33:19,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 477 treesize of output 463 [2022-11-03 02:33:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:33:19,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:20,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 90 treesize of output 86 [2022-11-03 02:33:24,282 INFO L356 Elim1Store]: treesize reduction 88, result has 59.1 percent of original size [2022-11-03 02:33:24,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 269 [2022-11-03 02:33:37,474 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:33:37,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111945 treesize of output 111586 [2022-11-03 02:35:57,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:57,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667515830] [2022-11-03 02:35:57,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:35:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119628130] [2022-11-03 02:35:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119628130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:35:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [93717428] [2022-11-03 02:35:57,312 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:35:57,312 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:35:57,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:35:57,323 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:35:57,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:35:57,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:57,456 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:35:57,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:35:57,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:57,473 INFO L390 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 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-03 02:35:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:57,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-11-03 02:35:57,615 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:35:57,675 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:35:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:35:58,289 INFO L356 Elim1Store]: treesize reduction 79, result has 49.7 percent of original size [2022-11-03 02:35:58,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 110 [2022-11-03 02:35:58,710 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 02:35:58,719 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:02,746 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '572#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (= (ite (and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |ULTIMATE.start_main_~sum~0#1| ~ARR_SIZE~0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:36:02,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:36:02,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:36:02,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-03 02:36:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224958200] [2022-11-03 02:36:02,747 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:02,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:36:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:36:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:36:02,755 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:36:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:04,609 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2022-11-03 02:36:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:36:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2022-11-03 02:36:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:04,613 INFO L225 Difference]: With dead ends: 68 [2022-11-03 02:36:04,613 INFO L226 Difference]: Without dead ends: 49 [2022-11-03 02:36:04,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=340, Invalid=2110, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 02:36:04,616 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:04,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 84 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 163 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-03 02:36:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-03 02:36:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2022-11-03 02:36:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:36:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2022-11-03 02:36:04,633 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 25 [2022-11-03 02:36:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:04,633 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2022-11-03 02:36:04,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:36:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2022-11-03 02:36:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:36:04,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:04,635 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:04,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:04,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 676074943, now seen corresponding path program 2 times [2022-11-03 02:36:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:04,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646713497] [2022-11-03 02:36:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:04,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:36:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511536257] [2022-11-03 02:36:04,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:04,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:04,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:04,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:36:04,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:36:04,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:04,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:04,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:36:05,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:36:05,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646713497] [2022-11-03 02:36:05,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:36:05,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511536257] [2022-11-03 02:36:05,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511536257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:05,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697431354] [2022-11-03 02:36:05,100 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:36:05,100 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:36:05,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:36:05,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:36:05,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:36:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:05,190 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:36:05,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:36:05,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:05,209 INFO L390 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 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-03 02:36:05,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:05,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-11-03 02:36:05,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:05,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:05,552 INFO L356 Elim1Store]: treesize reduction 103, result has 6.4 percent of original size [2022-11-03 02:36:05,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 352 treesize of output 349 [2022-11-03 02:36:05,661 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:06,126 INFO L356 Elim1Store]: treesize reduction 79, result has 49.7 percent of original size [2022-11-03 02:36:06,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 110 [2022-11-03 02:36:06,576 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 02:36:06,585 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:09,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '949#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= (ite (and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |ULTIMATE.start_main_~sum~0#1| ~ARR_SIZE~0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~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 [2022-11-03 02:36:09,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:36:09,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:36:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-03 02:36:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260607159] [2022-11-03 02:36:09,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:36:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:36:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:36:09,941 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:36:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:10,197 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2022-11-03 02:36:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:36:10,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-03 02:36:10,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:10,201 INFO L225 Difference]: With dead ends: 68 [2022-11-03 02:36:10,201 INFO L226 Difference]: Without dead ends: 53 [2022-11-03 02:36:10,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:36:10,207 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-03 02:36:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-11-03 02:36:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:36:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-11-03 02:36:10,249 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 26 [2022-11-03 02:36:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:10,250 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-11-03 02:36:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:36:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-11-03 02:36:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:36:10,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:10,259 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:10,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:10,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:10,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash -182315624, now seen corresponding path program 3 times [2022-11-03 02:36:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:10,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150744706] [2022-11-03 02:36:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:10,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:10,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:36:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123890409] [2022-11-03 02:36:10,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:10,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:10,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:36:10,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:10,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:10,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 02:36:10,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:10,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:10,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150744706] [2022-11-03 02:36:10,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:36:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123890409] [2022-11-03 02:36:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123890409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [723328157] [2022-11-03 02:36:10,720 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:36:10,721 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:36:10,721 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:36:10,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:36:10,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:36:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:10,812 INFO L356 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2022-11-03 02:36:10,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 68 [2022-11-03 02:36:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:10,920 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:36:10,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:36:10,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:10,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-11-03 02:36:11,029 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:11,065 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:11,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:11,654 INFO L356 Elim1Store]: treesize reduction 79, result has 49.7 percent of original size [2022-11-03 02:36:11,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 110 [2022-11-03 02:36:12,002 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 02:36:12,011 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:15,617 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1341#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (= (ite (and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |ULTIMATE.start_main_~sum~0#1| ~ARR_SIZE~0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:36:15,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:36:15,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:36:15,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-03 02:36:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465152069] [2022-11-03 02:36:15,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:15,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:36:15,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:36:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:36:15,619 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:36:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:15,901 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2022-11-03 02:36:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:36:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2022-11-03 02:36:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:15,903 INFO L225 Difference]: With dead ends: 76 [2022-11-03 02:36:15,903 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 02:36:15,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:36:15,905 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 51 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 02:36:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2022-11-03 02:36:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:36:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-03 02:36:15,922 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 28 [2022-11-03 02:36:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:15,922 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-03 02:36:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:36:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-03 02:36:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:36:15,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:15,924 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:16,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:36:16,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2009154776, now seen corresponding path program 4 times [2022-11-03 02:36:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856161623] [2022-11-03 02:36:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:16,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:36:16,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248469635] [2022-11-03 02:36:16,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:36:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:16,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:16,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:36:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:16,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:16,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:36:16,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:36:16,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:16,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856161623] [2022-11-03 02:36:16,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:36:16,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248469635] [2022-11-03 02:36:16,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248469635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:16,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4140568] [2022-11-03 02:36:16,387 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:36:16,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:36:16,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:36:16,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:36:16,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:36:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:16,487 INFO L356 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2022-11-03 02:36:16,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 68 [2022-11-03 02:36:16,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:16,604 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:36:16,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:36:16,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:16,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2022-11-03 02:36:16,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:16,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:16,967 INFO L356 Elim1Store]: treesize reduction 109, result has 26.8 percent of original size [2022-11-03 02:36:16,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 351 treesize of output 354 [2022-11-03 02:36:17,114 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:17,541 INFO L356 Elim1Store]: treesize reduction 79, result has 49.7 percent of original size [2022-11-03 02:36:17,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 110 [2022-11-03 02:36:17,898 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 02:36:17,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:20,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1754#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= (ite (and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |ULTIMATE.start_main_~sum~0#1| ~ARR_SIZE~0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~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 [2022-11-03 02:36:20,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:36:20,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:36:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-03 02:36:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422907109] [2022-11-03 02:36:20,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:36:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:36:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:36:20,768 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:36:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:20,989 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2022-11-03 02:36:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:36:20,990 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2022-11-03 02:36:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:20,991 INFO L225 Difference]: With dead ends: 77 [2022-11-03 02:36:20,991 INFO L226 Difference]: Without dead ends: 56 [2022-11-03 02:36:20,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:36:20,993 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:20,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:36:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-03 02:36:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-11-03 02:36:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:36:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2022-11-03 02:36:21,013 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 30 [2022-11-03 02:36:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:21,013 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2022-11-03 02:36:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:36:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2022-11-03 02:36:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:36:21,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:21,015 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:21,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:21,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:36:21,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -395185713, now seen corresponding path program 5 times [2022-11-03 02:36:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973769144] [2022-11-03 02:36:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:21,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:36:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379827366] [2022-11-03 02:36:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:36:21,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:21,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:21,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:21,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:36:21,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:36:21,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:36:21,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:36:21,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:36:21,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973769144] [2022-11-03 02:36:21,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:36:21,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379827366] [2022-11-03 02:36:21,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379827366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:21,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [498923172] [2022-11-03 02:36:21,468 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:36:21,469 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:36:21,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:36:21,470 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:36:21,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:36:21,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:21,551 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:36:21,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:36:21,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:21,570 INFO L390 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 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-03 02:36:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:21,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2022-11-03 02:36:21,692 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:21,731 INFO L390 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 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-03 02:36:22,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:22,298 INFO L356 Elim1Store]: treesize reduction 79, result has 49.7 percent of original size [2022-11-03 02:36:22,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 110 [2022-11-03 02:36:22,656 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-11-03 02:36:22,664 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:36:26,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2186#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (= (ite (and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |ULTIMATE.start_main_~sum~0#1| ~ARR_SIZE~0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:36:26,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:36:26,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:36:26,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-03 02:36:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188360802] [2022-11-03 02:36:26,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:36:26,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:36:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:36:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:36:26,029 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:36:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:26,170 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2022-11-03 02:36:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:36:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-03 02:36:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:26,172 INFO L225 Difference]: With dead ends: 64 [2022-11-03 02:36:26,172 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 02:36:26,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:36:26,174 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:26,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:36:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 02:36:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 02:36:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 02:36:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-03 02:36:26,183 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2022-11-03 02:36:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:26,183 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-03 02:36:26,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:36:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-03 02:36:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:36:26,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:26,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:26,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:26,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -944111439, now seen corresponding path program 6 times [2022-11-03 02:36:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508495021] [2022-11-03 02:36:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:26,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:36:26,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921606280] [2022-11-03 02:36:26,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:36:26,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:26,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:26,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e3d0fb-00c1-4eaa-bba4-3874826bccec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:36:27,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:36:27,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:36:27,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-03 02:36:27,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:27,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 58 [2022-11-03 02:36:27,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-03 02:36:27,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-03 02:36:27,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 67 [2022-11-03 02:36:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 139 [2022-11-03 02:36:27,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 3 [2022-11-03 02:36:27,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 189 [2022-11-03 02:36:27,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 180 [2022-11-03 02:36:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:27,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 37 [2022-11-03 02:36:27,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 98 [2022-11-03 02:36:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 209 [2022-11-03 02:36:27,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:27,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:28,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:28,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:36:28,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 53 [2022-11-03 02:36:28,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-11-03 02:36:28,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:28,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:36:31,194 INFO L356 Elim1Store]: treesize reduction 682, result has 17.2 percent of original size [2022-11-03 02:36:31,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 120 treesize of output 354 [2022-11-03 02:36:31,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:37:13,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2192 treesize of output 2120 [2022-11-03 02:37:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:13,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:27,927 WARN L234 SmtUtils]: Spent 14.19s on a formula simplification. DAG size of input: 197 DAG size of output: 122 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:37:27,929 INFO L356 Elim1Store]: treesize reduction 529, result has 46.2 percent of original size [2022-11-03 02:37:27,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 25852 treesize of output 25823