./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/xor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P --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 fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:28:44,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:28:44,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:28:44,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:28:44,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:28:44,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:28:44,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:28:44,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:28:44,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:28:44,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:28:44,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:28:44,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:28:44,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:28:44,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:28:44,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:28:44,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:28:44,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:28:44,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:28:44,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:28:44,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:28:44,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:28:44,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:28:44,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:28:44,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:28:44,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:28:44,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:28:44,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:28:44,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:28:44,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:28:44,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:28:44,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:28:44,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:28:44,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:28:44,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:28:44,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:28:44,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:28:44,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:28:44,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:28:44,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:28:44,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:28:44,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:28:44,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:28:44,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:28:44,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:28:44,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:28:44,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:28:44,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:28:44,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:28:44,290 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:28:44,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:28:44,291 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:28:44,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:28:44,292 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:28:44,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:28:44,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:28:44,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:28:44,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:28:44,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:28:44,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:28:44,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:28:44,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:28:44,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:28:44,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:28:44,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:28:44,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:28:44,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:28:44,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:28:44,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:28:44,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:28:44,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:28:44,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:28:44,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:28:44,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:28:44,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:28:44,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:44,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:28:44,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:28:44,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:28:44,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:28:44,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:28:44,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:28:44,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:28:44,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:28:44,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2021-11-21 01:28:44,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:28:44,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:28:44,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:28:44,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:28:44,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:28:44,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/xor1.i [2021-11-21 01:28:44,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/10762b803/ab412acf5b0e48a993c34c9275dd2d69/FLAGaacbfda4f [2021-11-21 01:28:45,361 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:28:45,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i [2021-11-21 01:28:45,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/10762b803/ab412acf5b0e48a993c34c9275dd2d69/FLAGaacbfda4f [2021-11-21 01:28:45,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/10762b803/ab412acf5b0e48a993c34c9275dd2d69 [2021-11-21 01:28:45,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:28:45,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:28:45,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:45,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:28:45,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:28:45,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:45" (1/1) ... [2021-11-21 01:28:45,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6201d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:45, skipping insertion in model container [2021-11-21 01:28:45,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:45" (1/1) ... [2021-11-21 01:28:45,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:28:45,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:28:45,995 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_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-21 01:28:45,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:46,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:28:46,044 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_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-21 01:28:46,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:46,060 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:28:46,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46 WrapperNode [2021-11-21 01:28:46,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:46,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:46,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:28:46,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:28:46,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,098 INFO L137 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2021-11-21 01:28:46,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:46,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:28:46,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:28:46,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:28:46,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:28:46,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:28:46,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:28:46,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:28:46,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (1/1) ... [2021-11-21 01:28:46,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:46,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:28:46,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:28:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:28:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:28:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2021-11-21 01:28:46,206 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2021-11-21 01:28:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:28:46,340 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:28:46,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:28:46,619 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:46,647 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:46,647 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:28:46,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:46 BoogieIcfgContainer [2021-11-21 01:28:46,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:46,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:46,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:46,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:46,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:28:45" (1/3) ... [2021-11-21 01:28:46,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f7ccce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:46, skipping insertion in model container [2021-11-21 01:28:46,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:46" (2/3) ... [2021-11-21 01:28:46,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f7ccce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:46, skipping insertion in model container [2021-11-21 01:28:46,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:46" (3/3) ... [2021-11-21 01:28:46,658 INFO L111 eAbstractionObserver]: Analyzing ICFG xor1.i [2021-11-21 01:28:46,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:46,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:28:46,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:46,722 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:28:46,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:28:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-11-21 01:28:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:28:46,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:46,748 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:46,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash 597464896, now seen corresponding path program 1 times [2021-11-21 01:28:46,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006775791] [2021-11-21 01:28:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:46,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:28:47,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006775791] [2021-11-21 01:28:47,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006775791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:47,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:47,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:28:47,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626076450] [2021-11-21 01:28:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:47,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:47,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:47,106 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-21 01:28:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:47,176 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-21 01:28:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 20 [2021-11-21 01:28:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:47,187 INFO L225 Difference]: With dead ends: 33 [2021-11-21 01:28:47,187 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 01:28:47,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:47,196 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:47,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 01:28:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 01:28:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-11-21 01:28:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-21 01:28:47,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-21 01:28:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:47,239 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-21 01:28:47,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-21 01:28:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-21 01:28:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:28:47,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:47,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:47,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:28:47,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:47,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1498069992, now seen corresponding path program 1 times [2021-11-21 01:28:47,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074398572] [2021-11-21 01:28:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:47,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:28:47,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074398572] [2021-11-21 01:28:47,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074398572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:47,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594038080] [2021-11-21 01:28:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:47,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:47,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:47,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:47,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:28:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:47,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:28:47,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:28:47,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:28:47,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594038080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:47,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:28:47,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:28:47,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505722572] [2021-11-21 01:28:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:47,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:47,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:47,597 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:28:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:47,630 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-21 01:28:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-21 01:28:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:47,633 INFO L225 Difference]: With dead ends: 29 [2021-11-21 01:28:47,638 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 01:28:47,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:47,640 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:47,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 01:28:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-21 01:28:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-11-21 01:28:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-21 01:28:47,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-21 01:28:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:47,657 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-21 01:28:47,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:28:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-21 01:28:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:28:47,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:47,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:47,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:47,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:47,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash 310367812, now seen corresponding path program 1 times [2021-11-21 01:28:47,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:47,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671310583] [2021-11-21 01:28:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:47,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:28:47,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:47,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671310583] [2021-11-21 01:28:47,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671310583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544865162] [2021-11-21 01:28:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:47,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:47,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:47,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:47,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:28:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:28:48,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:28:48,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:28:48,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544865162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:48,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:28:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:28:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539454226] [2021-11-21 01:28:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:48,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:48,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:48,094 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-21 01:28:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:48,114 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-21 01:28:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:48,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 24 [2021-11-21 01:28:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:48,117 INFO L225 Difference]: With dead ends: 27 [2021-11-21 01:28:48,117 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 01:28:48,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:48,119 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:48,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 01:28:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-21 01:28:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-21 01:28:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-21 01:28:48,126 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-21 01:28:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:48,128 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-21 01:28:48,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-21 01:28:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-21 01:28:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:28:48,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:48,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:48,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:48,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-21 01:28:48,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 220283989, now seen corresponding path program 1 times [2021-11-21 01:28:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756809374] [2021-11-21 01:28:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:48,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:28:48,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:48,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756809374] [2021-11-21 01:28:48,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756809374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:48,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152162530] [2021-11-21 01:28:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:48,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:48,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:48,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:28:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:48,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:28:48,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:28:48,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:28:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:28:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152162530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:28:48,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982090922] [2021-11-21 01:28:48,684 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:28:48,684 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:28:48,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:28:48,696 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:28:48,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:28:48,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:48,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:48,829 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:28:48,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:28:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:48,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:28:48,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:48,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:48,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:28:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:49,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:49,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:49,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:49,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:28:49,234 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:28:49,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:28:49,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:28:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:28:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 01:28:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,766 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 01:28:50,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 01:28:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:50,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:28:50,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:28:51,687 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:28:51,940 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:28:52,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:28:52,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:28:52,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-21 01:28:52,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708864498] [2021-11-21 01:28:52,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:28:52,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:28:52,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:52,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:28:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:28:52,755 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:28:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:52,801 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-21 01:28:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:28:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-21 01:28:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:52,804 INFO L225 Difference]: With dead ends: 36 [2021-11-21 01:28:52,804 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 01:28:52,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:28:52,808 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:52,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:52,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 01:28:52,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 01:28:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-11-21 01:28:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-21 01:28:52,823 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-21 01:28:52,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:52,823 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-21 01:28:52,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:28:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-21 01:28:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:28:52,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:52,827 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:52,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:53,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 345546157, now seen corresponding path program 2 times [2021-11-21 01:28:53,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:53,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077384274] [2021-11-21 01:28:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:53,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:28:53,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077384274] [2021-11-21 01:28:53,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077384274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477588514] [2021-11-21 01:28:53,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:28:53,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:53,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:28:53,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:28:53,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:28:53,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:28:53,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:28:53,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:28:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:28:53,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477588514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:28:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807787112] [2021-11-21 01:28:53,386 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:28:53,387 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:28:53,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:28:53,388 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:28:53,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:28:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,450 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:28:53,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:28:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,508 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:28:53,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:28:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:28:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:53,799 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:28:53,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:28:54,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:28:54,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:28:54,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:28:54,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:28:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,822 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:28:54,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:28:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:54,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:28:54,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:28:55,459 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:28:55,670 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:28:56,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:28:56,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:28:56,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-21 01:28:56,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337588090] [2021-11-21 01:28:56,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:28:56,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:28:56,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:28:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:28:56,240 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:28:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:56,275 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-21 01:28:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:28:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-21 01:28:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:56,277 INFO L225 Difference]: With dead ends: 38 [2021-11-21 01:28:56,277 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 01:28:56,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:28:56,278 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:56,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 01:28:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-21 01:28:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2021-11-21 01:28:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-21 01:28:56,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-21 01:28:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:56,284 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-21 01:28:56,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:28:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-21 01:28:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:28:56,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:56,286 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:56,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-21 01:28:56,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:56,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2109256435, now seen corresponding path program 3 times [2021-11-21 01:28:56,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:56,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836230455] [2021-11-21 01:28:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:56,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-21 01:28:56,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:56,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836230455] [2021-11-21 01:28:56,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836230455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:56,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882827555] [2021-11-21 01:28:56,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:28:56,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:56,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:56,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:56,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:28:56,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:28:56,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:28:56,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:28:56,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-21 01:28:56,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:28:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-21 01:28:56,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882827555] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:28:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2117078309] [2021-11-21 01:28:56,834 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:28:56,834 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:28:56,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:28:56,835 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:28:56,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:28:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:56,874 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:28:56,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:28:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:56,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:56,934 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:28:56,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:28:56,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:56,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:28:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:28:57,182 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:28:57,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:28:57,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:28:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:57,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:28:58,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:28:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:28:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,315 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:28:58,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:28:58,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:28:58,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:28:58,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:28:58,893 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:28:59,089 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:28:59,714 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:28:59,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:28:59,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-21 01:28:59,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293646661] [2021-11-21 01:28:59,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:28:59,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:28:59,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:59,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:28:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:28:59,717 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:28:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:59,763 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-21 01:28:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:28:59,764 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2021-11-21 01:28:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:59,764 INFO L225 Difference]: With dead ends: 49 [2021-11-21 01:28:59,765 INFO L226 Difference]: Without dead ends: 31 [2021-11-21 01:28:59,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-21 01:28:59,766 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:59,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-21 01:28:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-21 01:28:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-11-21 01:28:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-21 01:28:59,772 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-21 01:28:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:59,773 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-21 01:28:59,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:28:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-21 01:28:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-21 01:28:59,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:59,775 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:59,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 01:28:59,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:59,988 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1691335776, now seen corresponding path program 4 times [2021-11-21 01:28:59,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:59,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116652007] [2021-11-21 01:28:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:59,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:29:00,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116652007] [2021-11-21 01:29:00,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116652007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082242974] [2021-11-21 01:29:00,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:29:00,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:00,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:29:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:00,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:29:00,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:29:00,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:29:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082242974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1690343176] [2021-11-21 01:29:00,604 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:00,604 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:00,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:00,605 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:00,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:00,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,645 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:00,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:00,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:29:00,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:00,905 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:29:00,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:29:01,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:01,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:01,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:01,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,717 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:01,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:01,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:01,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:02,290 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:02,441 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:02,945 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:02,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:02,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-21 01:29:02,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259296977] [2021-11-21 01:29:02,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:02,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:29:02,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:29:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:29:02,948 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:03,016 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-21 01:29:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:29:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-11-21 01:29:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:03,017 INFO L225 Difference]: With dead ends: 62 [2021-11-21 01:29:03,018 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:29:03,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:29:03,020 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:03,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:29:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-21 01:29:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-11-21 01:29:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-21 01:29:03,027 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-21 01:29:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:03,027 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-21 01:29:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-21 01:29:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 01:29:03,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:03,030 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:03,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:03,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:03,253 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash -420544096, now seen corresponding path program 5 times [2021-11-21 01:29:03,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:03,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115558631] [2021-11-21 01:29:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:03,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:29:03,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:03,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115558631] [2021-11-21 01:29:03,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115558631] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50220119] [2021-11-21 01:29:03,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:29:03,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:03,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:03,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:29:03,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:29:03,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:03,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:29:03,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-21 01:29:03,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-21 01:29:03,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50220119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:03,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2080804635] [2021-11-21 01:29:03,966 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:03,966 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:03,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:03,967 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:03,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:03,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,004 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:29:04,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:29:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,044 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:04,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:29:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,259 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:29:04,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:29:04,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:04,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 01:29:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:04,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:05,019 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 01:29:05,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 01:29:05,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:05,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:05,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:05,566 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:05,763 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:06,300 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:06,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:06,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-21 01:29:06,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961299164] [2021-11-21 01:29:06,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:06,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 01:29:06,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 01:29:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 01:29:06,304 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:06,392 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-21 01:29:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-21 01:29:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-21 01:29:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:06,400 INFO L225 Difference]: With dead ends: 69 [2021-11-21 01:29:06,403 INFO L226 Difference]: Without dead ends: 50 [2021-11-21 01:29:06,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 01:29:06,405 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:06,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-21 01:29:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-21 01:29:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 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) [2021-11-21 01:29:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-21 01:29:06,419 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-21 01:29:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:06,420 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-21 01:29:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-21 01:29:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 01:29:06,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:06,428 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:06,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:06,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 01:29:06,653 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -837045304, now seen corresponding path program 6 times [2021-11-21 01:29:06,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:06,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262536880] [2021-11-21 01:29:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:06,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:07,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262536880] [2021-11-21 01:29:07,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262536880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982456898] [2021-11-21 01:29:07,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:29:07,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:07,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:07,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:07,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:29:07,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:29:07,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:07,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:29:07,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:07,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:08,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982456898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [990135812] [2021-11-21 01:29:08,092 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:08,092 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:08,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:08,093 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:08,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:08,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,139 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:08,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:08,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:29:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,390 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:29:08,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:29:08,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:09,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 01:29:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:09,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:09,226 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 01:29:09,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 01:29:09,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:09,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:09,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:09,796 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:09,962 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:10,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:10,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:10,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-21 01:29:10,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287937369] [2021-11-21 01:29:10,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:10,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-21 01:29:10,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-21 01:29:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 01:29:10,484 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:10,604 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-21 01:29:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 01:29:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2021-11-21 01:29:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:10,608 INFO L225 Difference]: With dead ends: 100 [2021-11-21 01:29:10,608 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 01:29:10,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 01:29:10,612 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:10,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:10,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 01:29:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-21 01:29:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 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) [2021-11-21 01:29:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-21 01:29:10,637 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-21 01:29:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:10,637 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-21 01:29:10,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-21 01:29:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 01:29:10,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:10,643 INFO L514 BasicCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:10,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:10,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:10,869 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash 610004512, now seen corresponding path program 7 times [2021-11-21 01:29:10,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:10,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802155331] [2021-11-21 01:29:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:10,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:12,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802155331] [2021-11-21 01:29:12,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802155331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735219764] [2021-11-21 01:29:12,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:29:12,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:12,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:12,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:29:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:12,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 01:29:12,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:12,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:15,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735219764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [748441988] [2021-11-21 01:29:15,195 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:15,195 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:15,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:15,196 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:15,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:15,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,255 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:15,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:15,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:15,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:29:15,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:15,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:15,482 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:29:15,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:29:15,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:16,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:16,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:16,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,429 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:16,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:16,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:16,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:16,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:16,911 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:17,079 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:18,036 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:18,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:18,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-21 01:29:18,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032447114] [2021-11-21 01:29:18,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:18,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-21 01:29:18,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-21 01:29:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5102, Invalid=7780, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 01:29:18,046 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:18,228 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-21 01:29:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-21 01:29:18,229 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2021-11-21 01:29:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:18,231 INFO L225 Difference]: With dead ends: 150 [2021-11-21 01:29:18,231 INFO L226 Difference]: Without dead ends: 125 [2021-11-21 01:29:18,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5102, Invalid=7780, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 01:29:18,240 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:18,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-21 01:29:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-21 01:29:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 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) [2021-11-21 01:29:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-21 01:29:18,265 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-21 01:29:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:18,267 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-21 01:29:18,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-21 01:29:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-21 01:29:18,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:18,270 INFO L514 BasicCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:29:18,471 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash 947223328, now seen corresponding path program 8 times [2021-11-21 01:29:18,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:18,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609138446] [2021-11-21 01:29:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:18,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 01:29:21,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609138446] [2021-11-21 01:29:21,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609138446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001022067] [2021-11-21 01:29:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:29:21,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:21,990 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:21,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:29:22,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:29:22,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:29:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2021-11-21 01:29:22,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-21 01:29:22,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001022067] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:22,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1597699961] [2021-11-21 01:29:22,709 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:22,709 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:22,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:22,710 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:22,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,759 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:29:22,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:29:22,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,796 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:22,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:29:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,023 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:29:23,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:29:23,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:23,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:23,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:23,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:23,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,754 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:23,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:23,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:23,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:24,312 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:24,461 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:25,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:25,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:25,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-21 01:29:25,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684894570] [2021-11-21 01:29:25,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:25,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-21 01:29:25,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-21 01:29:25,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5131, Invalid=9149, Unknown=0, NotChecked=0, Total=14280 [2021-11-21 01:29:25,750 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:25,919 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-21 01:29:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-21 01:29:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-11-21 01:29:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:25,923 INFO L225 Difference]: With dead ends: 155 [2021-11-21 01:29:25,923 INFO L226 Difference]: Without dead ends: 130 [2021-11-21 01:29:25,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5131, Invalid=9149, Unknown=0, NotChecked=0, Total=14280 [2021-11-21 01:29:25,927 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:25,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-21 01:29:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-21 01:29:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 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) [2021-11-21 01:29:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-21 01:29:25,941 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-21 01:29:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:25,941 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-21 01:29:25,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-21 01:29:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-21 01:29:25,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:25,945 INFO L514 BasicCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:25,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:26,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:26,158 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1261188744, now seen corresponding path program 9 times [2021-11-21 01:29:26,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:26,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053075839] [2021-11-21 01:29:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:26,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 01:29:29,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:29,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053075839] [2021-11-21 01:29:29,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053075839] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:29,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841753137] [2021-11-21 01:29:29,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:29:29,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:29,759 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:29,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:29:29,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:29:29,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:29,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-21 01:29:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 01:29:30,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 01:29:30,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841753137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:30,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015790637] [2021-11-21 01:29:30,710 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:30,711 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:30,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:30,711 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:30,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:30,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,753 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:30,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:30,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:29:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:30,992 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:29:30,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:29:31,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:31,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:31,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:31,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,740 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:31,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:31,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:31,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:32,269 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:32,440 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:33,546 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:33,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:33,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-21 01:29:33,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660724456] [2021-11-21 01:29:33,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:33,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-21 01:29:33,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-21 01:29:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5304, Invalid=8036, Unknown=0, NotChecked=0, Total=13340 [2021-11-21 01:29:33,551 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:33,661 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-21 01:29:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-21 01:29:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2021-11-21 01:29:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:33,674 INFO L225 Difference]: With dead ends: 160 [2021-11-21 01:29:33,675 INFO L226 Difference]: Without dead ends: 131 [2021-11-21 01:29:33,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5304, Invalid=8036, Unknown=0, NotChecked=0, Total=13340 [2021-11-21 01:29:33,677 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:33,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-21 01:29:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-21 01:29:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 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) [2021-11-21 01:29:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-21 01:29:33,685 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-21 01:29:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:33,686 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-21 01:29:33,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:29:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-21 01:29:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-21 01:29:33,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:33,688 INFO L514 BasicCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:33,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:29:33,905 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1519748320, now seen corresponding path program 10 times [2021-11-21 01:29:33,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:33,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665833781] [2021-11-21 01:29:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:33,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 01:29:34,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:34,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665833781] [2021-11-21 01:29:34,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665833781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:34,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113701208] [2021-11-21 01:29:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:29:34,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:34,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:34,121 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:34,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:29:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:34,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:29:34,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 01:29:34,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 01:29:34,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113701208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:34,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068906512] [2021-11-21 01:29:34,869 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:34,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:34,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:34,869 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:34,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:34,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,889 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:29:34,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:29:34,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,933 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:34,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:34,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:29:35,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:35,131 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:29:35,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:29:35,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:35,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:36,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:36,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:36,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,124 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:36,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:36,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:36,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:36,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:36,571 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:36,718 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:37,397 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:37,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:37,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-21 01:29:37,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028426188] [2021-11-21 01:29:37,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:29:37,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:29:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:29:37,400 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:37,438 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-21 01:29:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:29:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2021-11-21 01:29:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:37,439 INFO L225 Difference]: With dead ends: 171 [2021-11-21 01:29:37,439 INFO L226 Difference]: Without dead ends: 143 [2021-11-21 01:29:37,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:29:37,441 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:37,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:29:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-21 01:29:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-21 01:29:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 states have internal predecessors, (141), 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) [2021-11-21 01:29:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-21 01:29:37,449 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-21 01:29:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:37,450 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-21 01:29:37,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-21 01:29:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 01:29:37,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:37,453 INFO L514 BasicCegarLoop]: trace histogram [100, 66, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:37,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:37,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 01:29:37,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1800960992, now seen corresponding path program 11 times [2021-11-21 01:29:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462413558] [2021-11-21 01:29:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:37,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6110 trivial. 0 not checked. [2021-11-21 01:29:38,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:38,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462413558] [2021-11-21 01:29:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462413558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:38,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328388439] [2021-11-21 01:29:38,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:29:38,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:38,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:38,093 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:38,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:29:38,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:29:38,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:38,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:29:38,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 1062 proven. 21 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2021-11-21 01:29:38,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2021-11-21 01:29:39,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328388439] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:39,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139604967] [2021-11-21 01:29:39,084 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:39,084 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:39,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:39,085 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:39,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,116 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:39,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:39,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:39,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:29:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:39,361 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:29:39,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:29:39,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:39,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:39,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:40,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:40,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,139 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:40,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:40,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:40,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:40,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:40,582 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:40,734 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:41,265 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:41,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:41,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-21 01:29:41,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585736852] [2021-11-21 01:29:41,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:41,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-21 01:29:41,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-21 01:29:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 01:29:41,267 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:41,339 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-21 01:29:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 01:29:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 192 [2021-11-21 01:29:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:41,340 INFO L225 Difference]: With dead ends: 192 [2021-11-21 01:29:41,340 INFO L226 Difference]: Without dead ends: 152 [2021-11-21 01:29:41,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 01:29:41,342 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:41,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-21 01:29:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-21 01:29:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 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) [2021-11-21 01:29:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-21 01:29:41,351 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-21 01:29:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:41,352 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-21 01:29:41,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:29:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-21 01:29:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-21 01:29:41,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:41,355 INFO L514 BasicCegarLoop]: trace histogram [100, 69, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:41,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:41,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:41,581 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1880524212, now seen corresponding path program 12 times [2021-11-21 01:29:41,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:41,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675836016] [2021-11-21 01:29:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:41,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 01:29:42,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675836016] [2021-11-21 01:29:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675836016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:42,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313172501] [2021-11-21 01:29:42,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:29:42,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:42,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:42,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 01:29:42,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:29:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:42,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:29:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 01:29:42,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 01:29:43,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313172501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:43,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562756795] [2021-11-21 01:29:43,536 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:43,537 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:43,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:43,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:43,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:43,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,575 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:43,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:43,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:43,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:29:43,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:43,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:43,842 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:29:43,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:29:44,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:44,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:44,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 01:29:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,795 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-21 01:29:44,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 67 [2021-11-21 01:29:44,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:44,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:45,247 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:45,390 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:45,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:45,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:45,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-21 01:29:45,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600910875] [2021-11-21 01:29:45,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:45,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-21 01:29:45,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-21 01:29:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 01:29:45,875 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:45,959 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-21 01:29:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 01:29:45,963 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2021-11-21 01:29:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:45,964 INFO L225 Difference]: With dead ends: 226 [2021-11-21 01:29:45,964 INFO L226 Difference]: Without dead ends: 177 [2021-11-21 01:29:45,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 01:29:45,966 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:45,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-21 01:29:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-21 01:29:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 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) [2021-11-21 01:29:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-21 01:29:45,976 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-21 01:29:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:45,977 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-21 01:29:45,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-21 01:29:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-21 01:29:45,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:45,981 INFO L514 BasicCegarLoop]: trace histogram [144, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:46,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:46,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:29:46,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1187111392, now seen corresponding path program 13 times [2021-11-21 01:29:46,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566416179] [2021-11-21 01:29:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:46,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 01:29:47,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:47,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566416179] [2021-11-21 01:29:47,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566416179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:47,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226234782] [2021-11-21 01:29:47,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:29:47,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:47,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:47,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:47,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 01:29:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:47,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 01:29:47,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 4804 proven. 1176 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 01:29:48,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:29:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 01:29:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226234782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:29:50,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682864853] [2021-11-21 01:29:50,743 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:29:50,743 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:29:50,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:29:50,744 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:29:50,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:29:50,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,798 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:29:50,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:29:50,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:29:50,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:29:50,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:50,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:51,007 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:29:51,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:29:51,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:29:51,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:29:51,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:51,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:29:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,810 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:29:51,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:29:51,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:51,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:29:51,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:52,199 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:29:52,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:29:53,132 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:29:53,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:29:53,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-21 01:29:53,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305595075] [2021-11-21 01:29:53,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:29:53,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-21 01:29:53,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-21 01:29:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 01:29:53,135 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:53,288 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-21 01:29:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-21 01:29:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 278 [2021-11-21 01:29:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:53,294 INFO L225 Difference]: With dead ends: 301 [2021-11-21 01:29:53,294 INFO L226 Difference]: Without dead ends: 227 [2021-11-21 01:29:53,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 01:29:53,297 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:53,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-21 01:29:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-21 01:29:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 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) [2021-11-21 01:29:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-21 01:29:53,310 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-21 01:29:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:53,310 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-21 01:29:53,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 01:29:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-21 01:29:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-21 01:29:53,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:53,314 INFO L514 BasicCegarLoop]: trace histogram [294, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:53,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:53,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:29:53,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash -125203360, now seen corresponding path program 14 times [2021-11-21 01:29:53,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:53,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527963622] [2021-11-21 01:29:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:53,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 24455 refuted. 0 times theorem prover too weak. 24662 trivial. 0 not checked. [2021-11-21 01:29:57,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:57,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527963622] [2021-11-21 01:29:57,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527963622] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:57,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536034304] [2021-11-21 01:29:57,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:29:57,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:57,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:57,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:57,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:29:58,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-21 01:29:58,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:29:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:29:58,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 19606 proven. 105 refuted. 0 times theorem prover too weak. 29406 trivial. 0 not checked. [2021-11-21 01:29:59,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49012 trivial. 0 not checked. [2021-11-21 01:30:00,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536034304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:00,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1435793163] [2021-11-21 01:30:00,845 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:30:00,845 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:00,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:00,845 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:00,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:00,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:00,869 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:30:00,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:30:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:00,903 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:30:00,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:30:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:00,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:30:01,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:01,059 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:30:01,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:30:01,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:30:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:30:01,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:01,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:30:01,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,927 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:30:01,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:30:01,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:01,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:30:02,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:30:02,329 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:30:02,471 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:03,520 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:03,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:30:03,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-21 01:30:03,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121504405] [2021-11-21 01:30:03,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:03,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-21 01:30:03,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-21 01:30:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5596, Invalid=14996, Unknown=0, NotChecked=0, Total=20592 [2021-11-21 01:30:03,526 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:30:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:03,740 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-21 01:30:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-21 01:30:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 428 [2021-11-21 01:30:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:03,747 INFO L225 Difference]: With dead ends: 368 [2021-11-21 01:30:03,747 INFO L226 Difference]: Without dead ends: 244 [2021-11-21 01:30:03,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5596, Invalid=14996, Unknown=0, NotChecked=0, Total=20592 [2021-11-21 01:30:03,750 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:03,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-21 01:30:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-21 01:30:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 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) [2021-11-21 01:30:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-21 01:30:03,762 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-21 01:30:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:03,763 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-21 01:30:03,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:30:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-21 01:30:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-21 01:30:03,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:03,767 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:03,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:03,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:30:03,981 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1466225228, now seen corresponding path program 15 times [2021-11-21 01:30:03,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:03,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508444589] [2021-11-21 01:30:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:03,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 01:30:04,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508444589] [2021-11-21 01:30:04,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508444589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950266144] [2021-11-21 01:30:04,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:30:04,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:04,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:04,798 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:04,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-21 01:30:05,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:30:05,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:05,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:30:05,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 20004 proven. 465 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-21 01:30:05,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 01:30:07,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950266144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1706776005] [2021-11-21 01:30:07,173 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:30:07,173 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:07,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:07,174 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:07,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:07,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,214 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:30:07,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:30:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,243 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:30:07,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:30:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 01:30:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:07,408 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 01:30:07,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 01:30:07,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:30:07,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:07,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:30:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:08,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 01:30:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:08,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:08,260 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 01:30:08,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 01:30:08,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:08,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:30:08,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:30:08,794 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:30:08,928 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:09,468 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:09,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:30:09,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-21 01:30:09,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126858727] [2021-11-21 01:30:09,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:09,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-21 01:30:09,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-21 01:30:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2131, Invalid=3875, Unknown=0, NotChecked=0, Total=6006 [2021-11-21 01:30:09,472 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:09,571 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-21 01:30:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-21 01:30:09,577 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2021-11-21 01:30:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:09,579 INFO L225 Difference]: With dead ends: 383 [2021-11-21 01:30:09,579 INFO L226 Difference]: Without dead ends: 276 [2021-11-21 01:30:09,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2131, Invalid=3875, Unknown=0, NotChecked=0, Total=6006 [2021-11-21 01:30:09,581 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:09,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-21 01:30:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-21 01:30:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 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) [2021-11-21 01:30:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-21 01:30:09,595 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-21 01:30:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:09,596 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-21 01:30:09,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-21 01:30:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-21 01:30:09,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:09,601 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 62, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:09,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:09,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 01:30:09,801 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:09,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1387686836, now seen corresponding path program 16 times [2021-11-21 01:30:09,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:09,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280030644] [2021-11-21 01:30:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:09,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 01:30:11,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280030644] [2021-11-21 01:30:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280030644] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:11,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582746824] [2021-11-21 01:30:11,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:30:11,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:11,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:11,647 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:11,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-21 01:30:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:11,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-21 01:30:11,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 20004 proven. 1953 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-21 01:30:12,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 01:30:15,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582746824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711546326] [2021-11-21 01:30:15,066 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:30:15,066 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:15,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:15,067 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:15,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:15,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,103 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:30:15,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:30:15,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,138 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:30:15,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:30:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 01:30:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,317 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 01:30:15,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 01:30:15,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 01:30:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 01:30:15,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:15,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:15,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 01:30:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:16,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:16,037 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 01:30:16,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 01:30:16,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:16,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 01:30:16,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:30:16,534 INFO L197 IcfgInterpreter]: Interpreting procedure xor with input of size 15 for LOIs [2021-11-21 01:30:16,708 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:17,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:17,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:30:17,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-21 01:30:17,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622199270] [2021-11-21 01:30:17,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:17,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-21 01:30:17,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-21 01:30:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5205, Invalid=7905, Unknown=0, NotChecked=0, Total=13110 [2021-11-21 01:30:17,805 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:17,993 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-21 01:30:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-21 01:30:17,993 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 479 [2021-11-21 01:30:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:17,997 INFO L225 Difference]: With dead ends: 420 [2021-11-21 01:30:17,997 INFO L226 Difference]: Without dead ends: 313 [2021-11-21 01:30:17,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5205, Invalid=7905, Unknown=0, NotChecked=0, Total=13110 [2021-11-21 01:30:17,999 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:18,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-21 01:30:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-21 01:30:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.0097402597402598) internal successors, (311), 308 states have internal predecessors, (311), 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) [2021-11-21 01:30:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-21 01:30:18,019 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-21 01:30:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:18,027 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-21 01:30:18,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-21 01:30:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-21 01:30:18,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:18,038 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:18,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:18,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:18,265 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -588272563, now seen corresponding path program 17 times [2021-11-21 01:30:18,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147223469] [2021-11-21 01:30:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:18,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:30:31,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:30:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:30:36,645 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:30:36,645 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:30:36,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:30:36,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:30:36,651 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-21 01:30:36,658 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:30:36,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:30:36 BoogieIcfgContainer [2021-11-21 01:30:36,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:30:36,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:30:36,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:30:36,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:30:36,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:46" (3/4) ... [2021-11-21 01:30:36,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:30:36,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:30:36,980 INFO L158 Benchmark]: Toolchain (without parser) took 111241.42ms. Allocated memory was 104.9MB in the beginning and 815.8MB in the end (delta: 710.9MB). Free memory was 71.3MB in the beginning and 243.6MB in the end (delta: -172.3MB). Peak memory consumption was 539.2MB. Max. memory is 16.1GB. [2021-11-21 01:30:36,980 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory was 51.5MB in the beginning and 51.5MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:30:36,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.86ms. Allocated memory is still 104.9MB. Free memory was 71.1MB in the beginning and 81.7MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:30:36,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.33ms. Allocated memory is still 104.9MB. Free memory was 81.7MB in the beginning and 80.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:30:36,981 INFO L158 Benchmark]: Boogie Preprocessor took 28.51ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 961.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:30:36,981 INFO L158 Benchmark]: RCFGBuilder took 521.52ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 67.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:30:36,982 INFO L158 Benchmark]: TraceAbstraction took 110323.87ms. Allocated memory was 104.9MB in the beginning and 815.8MB in the end (delta: 710.9MB). Free memory was 66.6MB in the beginning and 244.6MB in the end (delta: -178.1MB). Peak memory consumption was 647.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:36,982 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 815.8MB. Free memory was 244.6MB in the beginning and 243.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:36,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory was 51.5MB in the beginning and 51.5MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.86ms. Allocated memory is still 104.9MB. Free memory was 71.1MB in the beginning and 81.7MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.33ms. Allocated memory is still 104.9MB. Free memory was 81.7MB in the beginning and 80.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.51ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 961.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 521.52ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 67.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 110323.87ms. Allocated memory was 104.9MB in the beginning and 815.8MB in the end (delta: 710.9MB). Free memory was 66.6MB in the beginning and 244.6MB in the end (delta: -178.1MB). Peak memory consumption was 647.1MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 815.8MB. Free memory was 244.6MB in the beginning and 243.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseXor at line 24. Possible FailurePath: [L31] int x[100]; [L32] int temp; [L33] int ret; [L34] int ret2; [L35] int ret5; [L37] int i = 0; VAL [i=0, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=1, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=2, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=3, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=4, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=5, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=6, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=7, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=8, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=9, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=10, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=11, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=12, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=13, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=14, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=15, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=16, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=17, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=18, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=19, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=20, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=21, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=22, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=23, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=24, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=25, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=26, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=27, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=28, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=29, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=30, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=31, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=32, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=33, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=34, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=35, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=36, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=37, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=38, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=39, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=40, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=41, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=42, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=43, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=44, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=45, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=46, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=47, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=48, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=49, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=50, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=51, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=52, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=53, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=54, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=55, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=56, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=57, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=58, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=59, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=60, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=61, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=62, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=63, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=64, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=65, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=66, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=67, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=68, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=69, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=70, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=71, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=72, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=73, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=74, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=75, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=76, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=77, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=78, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=79, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=80, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=81, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=82, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=83, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=84, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=85, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=86, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=87, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=88, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=89, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=90, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=91, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=92, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=93, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=94, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=95, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=96, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=97, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=98, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=99, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=100, x={9:0}] [L37] COND FALSE !(i < 100) VAL [i=100, x={9:0}] [L41] CALL, EXPR xor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L41] RET, EXPR xor(x) VAL [i=100, x={9:0}, xor(x)=-1] [L41] ret = xor(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp VAL [i=100, ret=-1, temp=-3, x={9:0}] [L44] CALL, EXPR xor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L44] RET, EXPR xor(x) VAL [i=100, ret=-1, temp=-3, x={9:0}, xor(x)=65] [L44] ret2 = xor(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=1, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=2, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=3, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=4, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=5, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=6, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=7, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=8, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=9, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=10, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=11, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=12, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=13, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=14, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=15, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=16, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=17, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=18, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=19, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=20, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=21, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=22, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=23, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=24, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=25, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=26, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=27, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=28, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=29, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=30, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=31, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=32, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=33, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=34, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=35, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=36, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=37, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=38, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=39, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=40, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=41, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=42, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=43, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=44, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=45, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=46, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=47, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=48, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=49, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=50, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=51, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=52, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=53, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=54, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=55, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=56, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=57, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=58, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=59, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=60, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=61, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=62, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=63, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=64, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=65, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=66, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=67, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=68, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=69, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=70, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=71, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=72, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=73, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=74, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=75, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=76, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=77, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=78, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=79, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=80, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=81, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=82, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=83, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=84, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=85, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=86, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=87, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=88, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=89, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=90, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=91, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=92, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=93, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=94, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=95, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=96, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=97, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=98, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=99, ret=-1, ret2=65, temp=-3, x={9:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=99, i=100, ret=-1, ret2=65, temp=-3, x={9:0}] [L50] CALL, EXPR xor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res ^ x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L50] RET, EXPR xor(x) VAL [i=100, i=99, ret=-1, ret2=65, temp=-3, x={9:0}, xor(x)=66] [L50] ret5 = xor(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=99, i=100, ret=-1, ret2=65, ret5=66, temp=-3, x={9:0}] [L53] reach_error() VAL [i=100, i=99, ret=-1, ret2=65, ret5=66, temp=-3, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 109.9s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1257 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 229 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9225 GetRequests, 8076 SyntacticMatches, 2 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21195 ImplicationChecksByTransitivity, 37.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=19, InterpolantAutomatonStates: 962, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 17.2s SatisfiabilityAnalysisTime, 36.5s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 8616 ConstructedInterpolants, 0 QuantifiedInterpolants, 11458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10162 ConjunctsInSsa, 421 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 531682/606421 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:30:37,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/xor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P --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 fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:30:39,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:30:39,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:30:39,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:30:39,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:30:39,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:30:39,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:30:39,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:30:39,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:30:39,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:30:39,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:30:39,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:30:39,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:30:39,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:30:39,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:30:39,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:30:39,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:30:39,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:30:39,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:30:39,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:30:39,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:30:39,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:30:39,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:30:39,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:30:39,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:30:39,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:30:39,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:30:39,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:30:39,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:30:39,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:30:39,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:30:39,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:30:39,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:30:39,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:30:39,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:30:39,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:30:39,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:30:39,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:30:39,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:30:39,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:30:39,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:30:39,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:30:39,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:30:39,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:30:39,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:30:39,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:30:39,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:30:39,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:30:39,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:30:39,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:30:39,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:30:39,460 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:30:39,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:30:39,461 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:30:39,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:30:39,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:30:39,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:30:39,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:30:39,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:30:39,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:30:39,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:30:39,463 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:30:39,463 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:30:39,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:30:39,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:30:39,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:30:39,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:30:39,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:30:39,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:30:39,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:30:39,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:39,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:30:39,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:30:39,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:30:39,466 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:30:39,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:39,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:30:39,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:30:39,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:30:39,467 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa90627ffc045ef90595d49d60ca0f6095b53b667a9d0f028eb93e7bf4c6c579 [2021-11-21 01:30:39,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:30:39,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:30:39,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:30:39,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:30:39,859 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:30:39,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/xor1.i [2021-11-21 01:30:39,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/0b844f01b/eac854edc6ca4819922c14383502f9c6/FLAG31239348b [2021-11-21 01:30:40,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:30:40,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i [2021-11-21 01:30:40,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/0b844f01b/eac854edc6ca4819922c14383502f9c6/FLAG31239348b [2021-11-21 01:30:40,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/data/0b844f01b/eac854edc6ca4819922c14383502f9c6 [2021-11-21 01:30:40,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:30:40,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:30:40,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:40,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:30:40,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:30:40,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:40" (1/1) ... [2021-11-21 01:30:40,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bf3a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:40, skipping insertion in model container [2021-11-21 01:30:40,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:40" (1/1) ... [2021-11-21 01:30:40,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:30:40,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:30:41,145 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_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-21 01:30:41,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:41,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:30:41,189 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_5db3e829-78dd-4c06-bff3-42edc7945f9b/sv-benchmarks/c/array-crafted/xor1.i[1285,1298] [2021-11-21 01:30:41,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:41,205 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:30:41,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41 WrapperNode [2021-11-21 01:30:41,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:41,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:41,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:30:41,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:30:41,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,254 INFO L137 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-21 01:30:41,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:41,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:30:41,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:30:41,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:30:41,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:30:41,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:30:41,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:30:41,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:30:41,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (1/1) ... [2021-11-21 01:30:41,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:41,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:30:41,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:30:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:30:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:30:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:30:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:30:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:30:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:30:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2021-11-21 01:30:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2021-11-21 01:30:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:30:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:30:41,517 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:30:41,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:30:41,756 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:30:41,762 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:30:41,763 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:30:41,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:41 BoogieIcfgContainer [2021-11-21 01:30:41,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:30:41,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:30:41,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:30:41,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:30:41,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:30:40" (1/3) ... [2021-11-21 01:30:41,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5aa0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:41, skipping insertion in model container [2021-11-21 01:30:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:41" (2/3) ... [2021-11-21 01:30:41,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5aa0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:41, skipping insertion in model container [2021-11-21 01:30:41,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:41" (3/3) ... [2021-11-21 01:30:41,788 INFO L111 eAbstractionObserver]: Analyzing ICFG xor1.i [2021-11-21 01:30:41,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:30:41,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:30:41,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:30:41,851 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:30:41,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:30:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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) [2021-11-21 01:30:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:30:41,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:41,875 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:41,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2021-11-21 01:30:41,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:41,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928203528] [2021-11-21 01:30:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:41,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:41,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:41,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:41,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:30:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:42,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:30:42,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:42,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:42,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928203528] [2021-11-21 01:30:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928203528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:42,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:42,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:30:42,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503644368] [2021-11-21 01:30:42,325 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:42,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:30:42,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:30:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:30:42,359 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:30:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:42,400 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-21 01:30:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:30:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2021-11-21 01:30:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:42,423 INFO L225 Difference]: With dead ends: 51 [2021-11-21 01:30:42,424 INFO L226 Difference]: Without dead ends: 25 [2021-11-21 01:30:42,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:30:42,431 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:42,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-21 01:30:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-21 01:30:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-11-21 01:30:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-21 01:30:42,505 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2021-11-21 01:30:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:42,505 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-21 01:30:42,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:30:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-21 01:30:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:30:42,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:42,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:42,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:30:42,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:42,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash 297855743, now seen corresponding path program 1 times [2021-11-21 01:30:42,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:42,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704249046] [2021-11-21 01:30:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:42,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:42,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:42,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:42,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:30:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:42,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:42,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:42,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:43,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:43,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704249046] [2021-11-21 01:30:43,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704249046] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:43,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160477793] [2021-11-21 01:30:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:43,016 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:43,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:43,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-21 01:30:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:43,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:43,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:43,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:43,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [160477793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:43,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215578604] [2021-11-21 01:30:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:43,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:43,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:43,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:30:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:30:43,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:30:43,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:30:43,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215578604] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:43,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-21 01:30:43,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5, 3] total 10 [2021-11-21 01:30:43,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872202868] [2021-11-21 01:30:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:43,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:43,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:30:43,583 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:30:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:43,608 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-21 01:30:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-21 01:30:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:43,612 INFO L225 Difference]: With dead ends: 44 [2021-11-21 01:30:43,612 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:30:43,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:30:43,617 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:43,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:30:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-21 01:30:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2021-11-21 01:30:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-21 01:30:43,634 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2021-11-21 01:30:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:43,636 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-21 01:30:43,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:30:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-21 01:30:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 01:30:43,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:43,642 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:43,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:43,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-21 01:30:44,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:30:44,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:44,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 294125821, now seen corresponding path program 1 times [2021-11-21 01:30:44,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:44,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164925538] [2021-11-21 01:30:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:44,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:44,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:44,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:30:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:44,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:44,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:30:44,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:30:44,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:44,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164925538] [2021-11-21 01:30:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164925538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [163492831] [2021-11-21 01:30:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:44,551 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:44,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:44,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 01:30:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:44,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:30:44,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:30:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [163492831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:44,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024936943] [2021-11-21 01:30:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:44,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:44,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:44,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:44,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:30:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:44,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:30:44,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:30:44,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:30:45,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024936943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:45,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:30:45,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-21 01:30:45,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046082181] [2021-11-21 01:30:45,046 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:45,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:30:45,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:30:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:30:45,050 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:45,076 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-21 01:30:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:30:45,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-11-21 01:30:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:45,083 INFO L225 Difference]: With dead ends: 42 [2021-11-21 01:30:45,084 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:30:45,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:30:45,092 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:45,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:30:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-21 01:30:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2021-11-21 01:30:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-21 01:30:45,106 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2021-11-21 01:30:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-21 01:30:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:30:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-21 01:30:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-21 01:30:45,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:45,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:45,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:45,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-21 01:30:45,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 01:30:45,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:45,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:45,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -937491783, now seen corresponding path program 1 times [2021-11-21 01:30:45,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:45,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989284676] [2021-11-21 01:30:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:45,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:45,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:45,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:45,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:30:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:45,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:45,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:30:45,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:30:46,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989284676] [2021-11-21 01:30:46,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989284676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:46,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [379657665] [2021-11-21 01:30:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:46,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:46,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:46,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 01:30:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:46,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:46,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:30:46,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:30:46,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [379657665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:46,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095943335] [2021-11-21 01:30:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:46,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:46,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:46,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:30:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:46,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:30:46,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-21 01:30:46,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:30:46,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095943335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:46,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:30:46,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2021-11-21 01:30:46,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467465565] [2021-11-21 01:30:46,637 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:46,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:30:46,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:30:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:30:46,639 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:46,868 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2021-11-21 01:30:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:30:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2021-11-21 01:30:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:46,870 INFO L225 Difference]: With dead ends: 65 [2021-11-21 01:30:46,870 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:30:46,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:30:46,872 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:46,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:30:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-21 01:30:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-11-21 01:30:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-21 01:30:46,880 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2021-11-21 01:30:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:46,880 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-21 01:30:46,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-21 01:30:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 01:30:46,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:46,882 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:46,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:47,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:47,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:47,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:47,497 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1607006789, now seen corresponding path program 2 times [2021-11-21 01:30:47,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827575074] [2021-11-21 01:30:47,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:30:47,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:47,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:47,499 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:47,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:30:47,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:30:47,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:47,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:30:47,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:30:47,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:30:48,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827575074] [2021-11-21 01:30:48,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827575074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1789551843] [2021-11-21 01:30:48,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:30:48,033 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:48,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:48,034 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 01:30:48,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:30:48,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:48,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:30:48,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:30:48,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:30:48,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1789551843] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:48,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932011222] [2021-11-21 01:30:48,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:30:48,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:48,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:48,475 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:48,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:30:48,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:30:48,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:48,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-21 01:30:48,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-21 01:30:48,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932011222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:48,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:30:48,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-21 01:30:48,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961719856] [2021-11-21 01:30:48,971 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:48,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 01:30:48,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 01:30:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:30:48,974 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:30:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:49,679 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2021-11-21 01:30:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:30:49,690 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-11-21 01:30:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:49,692 INFO L225 Difference]: With dead ends: 95 [2021-11-21 01:30:49,692 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 01:30:49,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:30:49,694 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:49,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 319 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:30:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 01:30:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-21 01:30:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 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) [2021-11-21 01:30:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-21 01:30:49,704 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 68 [2021-11-21 01:30:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:49,704 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-21 01:30:49,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:30:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-21 01:30:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 01:30:49,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:49,706 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:49,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:49,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-21 01:30:50,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:50,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:50,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1497608003, now seen corresponding path program 3 times [2021-11-21 01:30:50,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:50,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38762382] [2021-11-21 01:30:50,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:30:50,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:50,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:50,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:50,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:30:50,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:30:50,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:50,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:30:50,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:50,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:50,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38762382] [2021-11-21 01:30:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38762382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [210766315] [2021-11-21 01:30:50,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:30:50,913 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:50,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:50,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-21 01:30:51,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:30:51,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:51,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:30:51,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:51,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [210766315] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:51,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241019519] [2021-11-21 01:30:51,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:30:51,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:51,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:51,421 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:51,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:30:51,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:30:51,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:51,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:30:51,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:51,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:30:52,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241019519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:52,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:30:52,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2021-11-21 01:30:52,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034299234] [2021-11-21 01:30:52,129 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:52,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:30:52,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:30:52,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:30:52,131 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:30:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:52,438 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-21 01:30:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:30:52,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 92 [2021-11-21 01:30:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:52,442 INFO L225 Difference]: With dead ends: 114 [2021-11-21 01:30:52,442 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 01:30:52,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:30:52,444 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:52,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 196 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 01:30:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-21 01:30:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 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) [2021-11-21 01:30:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-21 01:30:52,454 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 92 [2021-11-21 01:30:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:52,455 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-21 01:30:52,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:30:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-21 01:30:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-21 01:30:52,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:52,457 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 14, 14, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:52,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:52,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-21 01:30:52,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-21 01:30:53,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:53,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1279495095, now seen corresponding path program 4 times [2021-11-21 01:30:53,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:53,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449472186] [2021-11-21 01:30:53,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:30:53,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:53,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:53,074 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:53,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:30:53,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:30:53,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:53,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:30:53,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:30:53,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:30:54,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449472186] [2021-11-21 01:30:54,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449472186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [596105114] [2021-11-21 01:30:54,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:30:54,441 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:30:54,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:30:54,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:30:54,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:30:54,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:54,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:30:54,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:30:54,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:30:55,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [596105114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:55,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655135292] [2021-11-21 01:30:55,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:30:55,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:55,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:55,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:55,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 01:30:55,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:30:55,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:55,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:30:55,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 444 proven. 100 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-11-21 01:30:55,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-21 01:30:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655135292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:57,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:30:57,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 13, 14] total 55 [2021-11-21 01:30:57,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842630855] [2021-11-21 01:30:57,396 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:57,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-21 01:30:57,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-21 01:30:57,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2021-11-21 01:30:57,400 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:31:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:03,151 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2021-11-21 01:31:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-21 01:31:03,153 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-11-21 01:31:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:03,154 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:31:03,154 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 01:31:03,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1187, Invalid=5133, Unknown=0, NotChecked=0, Total=6320 [2021-11-21 01:31:03,159 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:03,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 562 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:31:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 01:31:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-21 01:31:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 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) [2021-11-21 01:31:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2021-11-21 01:31:03,174 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 128 [2021-11-21 01:31:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:03,175 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2021-11-21 01:31:03,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:31:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2021-11-21 01:31:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-21 01:31:03,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:03,179 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:03,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:03,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:03,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:03,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:03,805 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash 913996479, now seen corresponding path program 5 times [2021-11-21 01:31:03,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:31:03,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111865797] [2021-11-21 01:31:03,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-21 01:31:03,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:31:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:31:03,808 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:31:03,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:31:05,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-21 01:31:05,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:31:05,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:31:05,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2028 proven. 484 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2021-11-21 01:31:06,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 0 proven. 2516 refuted. 0 times theorem prover too weak. 2923 trivial. 0 not checked. [2021-11-21 01:31:09,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:31:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111865797] [2021-11-21 01:31:09,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111865797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [245246948] [2021-11-21 01:31:09,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-21 01:31:09,092 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:09,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:31:09,094 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:31:09,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db3e829-78dd-4c06-bff3-42edc7945f9b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process