./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG --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 c8661b1e533413e4de6576c4feab251d05a672526bd5f59b260c6cb9f9c05939 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:53:45,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:53:45,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:53:45,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:53:45,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:53:45,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:53:45,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:53:45,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:53:45,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:53:45,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:53:45,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:53:45,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:53:45,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:53:45,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:53:45,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:53:45,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:53:45,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:53:45,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:53:45,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:53:45,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:53:45,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:53:45,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:53:45,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:53:45,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:53:45,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:53:45,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:53:45,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:53:45,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:53:45,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:53:45,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:53:45,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:53:45,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:53:45,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:53:45,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:53:45,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:53:45,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:53:45,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:53:45,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:53:45,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:53:45,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:53:45,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:53:45,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:53:45,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:53:45,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:53:45,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:53:45,347 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:53:45,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:53:45,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:53:45,348 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:53:45,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:53:45,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:53:45,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:53:45,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:53:45,349 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:53:45,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:53:45,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:53:45,350 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:53:45,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:53:45,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:53:45,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:53:45,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:53:45,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:53:45,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:53:45,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:53:45,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:53:45,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:53:45,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:53:45,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:53:45,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:53:45,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:53:45,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:53:45,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:53:45,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:53:45,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:53:45,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:53:45,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:53:45,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:53:45,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:53:45,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:53:45,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:53:45,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:53:45,371 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_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8661b1e533413e4de6576c4feab251d05a672526bd5f59b260c6cb9f9c05939 [2021-10-29 04:53:45,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:53:45,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:53:45,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:53:45,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:53:45,748 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:53:45,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-29 04:53:45,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/data/358c30b37/5a4f1f9bf7454c489ac53dd2f984044d/FLAG4aa1ddfbd [2021-10-29 04:53:46,408 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:53:46,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-29 04:53:46,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/data/358c30b37/5a4f1f9bf7454c489ac53dd2f984044d/FLAG4aa1ddfbd [2021-10-29 04:53:46,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/data/358c30b37/5a4f1f9bf7454c489ac53dd2f984044d [2021-10-29 04:53:46,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:53:46,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:53:46,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:53:46,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:53:46,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:53:46,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:46" (1/1) ... [2021-10-29 04:53:46,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480dc264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:46, skipping insertion in model container [2021-10-29 04:53:46,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:53:46" (1/1) ... [2021-10-29 04:53:46,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:53:46,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:53:46,960 WARN L228 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_44dad974-7819-40ea-bc55-fd2dcddbaea2/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-29 04:53:46,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:53:46,984 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:53:47,020 WARN L228 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_44dad974-7819-40ea-bc55-fd2dcddbaea2/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-29 04:53:47,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:53:47,060 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:53:47,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47 WrapperNode [2021-10-29 04:53:47,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:53:47,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:53:47,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:53:47,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:53:47,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:53:47,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:53:47,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:53:47,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:53:47,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:53:47,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:53:47,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:53:47,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:53:47,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (1/1) ... [2021-10-29 04:53:47,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:53:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:47,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:53:47,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:53:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:53:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:53:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:53:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:53:47,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:53:47,569 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:53:47,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:47 BoogieIcfgContainer [2021-10-29 04:53:47,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:53:47,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:53:47,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:53:47,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:53:47,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:53:46" (1/3) ... [2021-10-29 04:53:47,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b21d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:47, skipping insertion in model container [2021-10-29 04:53:47,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:53:47" (2/3) ... [2021-10-29 04:53:47,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b21d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:53:47, skipping insertion in model container [2021-10-29 04:53:47,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:47" (3/3) ... [2021-10-29 04:53:47,584 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-29 04:53:47,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:53:47,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:53:47,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:53:47,661 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 [2021-10-29 04:53:47,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:53:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:53:47,685 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:47,686 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:53:47,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-29 04:53:47,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:47,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009710521] [2021-10-29 04:53:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:47,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:47,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009710521] [2021-10-29 04:53:47,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009710521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:53:47,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:53:47,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:53:47,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967568325] [2021-10-29 04:53:47,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:53:47,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:53:47,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:53:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:53:47,944 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:53:48,001 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-29 04:53:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:53:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 04:53:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:53:48,027 INFO L225 Difference]: With dead ends: 16 [2021-10-29 04:53:48,027 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 04:53:48,031 INFO L786 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 [2021-10-29 04:53:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 04:53:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 04:53:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-29 04:53:48,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-29 04:53:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:53:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-29 04:53:48,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-29 04:53:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:53:48,070 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:48,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:53:48,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:53:48,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-29 04:53:48,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:48,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813312122] [2021-10-29 04:53:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:48,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:48,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:48,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813312122] [2021-10-29 04:53:48,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813312122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:53:48,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145380613] [2021-10-29 04:53:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:48,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:48,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:53:48,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:53:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:48,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:53:48,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:53:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:48,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:53:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:48,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145380613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:53:48,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931139894] [2021-10-29 04:53:48,442 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:53:48,443 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:53:48,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:53:48,456 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:53:48,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:53:48,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:48,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:53:48,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:48,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:53:48,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:53:48,578 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-29 04:53:48,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:48,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:53:48,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:48,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:48,611 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:48,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:48,655 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:48,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:48,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:48,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:53:48,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:48,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:48,701 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:48,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:48,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:48,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:53:48,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:53:48,773 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:53:48,798 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:53:48,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-29 04:53:48,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:48,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:48,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,045 INFO L180 QuantifierPusher]: treesize reduction 16, result has 92.9 percent of original size [2021-10-29 04:53:49,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:53:49,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:49,211 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:53:49,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:53:49,223 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:53:49,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:53:49,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:53:49,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-10-29 04:53:49,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826090359] [2021-10-29 04:53:49,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:53:49,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:53:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:53:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:53:49,629 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:53:49,653 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-29 04:53:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:53:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:53:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:53:49,656 INFO L225 Difference]: With dead ends: 13 [2021-10-29 04:53:49,656 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 04:53:49,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:53:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 04:53:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 04:53:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-29 04:53:49,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-10-29 04:53:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:53:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-29 04:53:49,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-29 04:53:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:53:49,665 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:49,665 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-29 04:53:49,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:53:49,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:49,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1390313566, now seen corresponding path program 2 times [2021-10-29 04:53:49,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:49,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337556714] [2021-10-29 04:53:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:49,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:49,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:49,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337556714] [2021-10-29 04:53:49,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337556714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:53:49,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437122026] [2021-10-29 04:53:49,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:53:49,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:49,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:49,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:53:49,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:53:50,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-29 04:53:50,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:53:50,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:53:50,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:53:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:50,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:53:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:50,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437122026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:53:50,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [369455242] [2021-10-29 04:53:50,265 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:53:50,266 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:53:50,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:53:50,266 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:53:50,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:53:50,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,284 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:50,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:53:50,287 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:50,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:53:50,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:53:50,302 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-29 04:53:50,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:50,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:53:50,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:50,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:50,324 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:50,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:50,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:50,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:50,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:50,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:53:50,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:50,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:50,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:50,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,370 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:50,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:53:50,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:53:50,380 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:53:50,388 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:53:50,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:53:50,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,493 INFO L180 QuantifierPusher]: treesize reduction 18, result has 92.1 percent of original size [2021-10-29 04:53:50,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:53:50,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:50,604 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:53:50,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:53:50,618 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:53:50,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:53:50,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:53:50,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-10-29 04:53:50,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787508395] [2021-10-29 04:53:50,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 04:53:50,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:53:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 04:53:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:53:50,976 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:53:51,019 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-10-29 04:53:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 04:53:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:53:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:53:51,021 INFO L225 Difference]: With dead ends: 19 [2021-10-29 04:53:51,022 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 04:53:51,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:53:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 04:53:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 04:53:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-29 04:53:51,031 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-10-29 04:53:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:53:51,032 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-29 04:53:51,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-29 04:53:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:53:51,033 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:51,034 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-10-29 04:53:51,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:53:51,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-29 04:53:51,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -955493474, now seen corresponding path program 3 times [2021-10-29 04:53:51,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:51,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815245976] [2021-10-29 04:53:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:51,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:51,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:51,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815245976] [2021-10-29 04:53:51,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815245976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:53:51,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360088449] [2021-10-29 04:53:51,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 04:53:51,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:51,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:51,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:53:51,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:53:51,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 04:53:51,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:53:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 04:53:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:53:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:51,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:53:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:51,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360088449] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:53:51,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777227793] [2021-10-29 04:53:51,924 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:53:51,924 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:53:51,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:53:51,925 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:53:51,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:53:51,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,932 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:51,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:53:51,935 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:51,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:53:51,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:53:51,943 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-10-29 04:53:51,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:51,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:53:51,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:51,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:51,955 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:51,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:51,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:51,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:51,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:51,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:53:51,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:51,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:51,983 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:51,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:51,987 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:51,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:53:51,991 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:53:51,991 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:53:51,998 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:53:52,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:53:52,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,060 INFO L180 QuantifierPusher]: treesize reduction 18, result has 92.1 percent of original size [2021-10-29 04:53:52,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:53:52,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:52,128 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:53:52,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:53:52,139 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:53:52,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:53:52,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:53:52,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2021-10-29 04:53:52,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308856973] [2021-10-29 04:53:52,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-29 04:53:52,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:53:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-29 04:53:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-29 04:53:52,458 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:52,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:53:52,524 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-10-29 04:53:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 04:53:52,525 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:53:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:53:52,526 INFO L225 Difference]: With dead ends: 31 [2021-10-29 04:53:52,526 INFO L226 Difference]: Without dead ends: 28 [2021-10-29 04:53:52,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-29 04:53:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-29 04:53:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-29 04:53:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-29 04:53:52,533 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2021-10-29 04:53:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:53:52,534 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-29 04:53:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-29 04:53:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 04:53:52,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:52,535 INFO L513 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2021-10-29 04:53:52,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:53:52,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:52,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -643192290, now seen corresponding path program 4 times [2021-10-29 04:53:52,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:52,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762511922] [2021-10-29 04:53:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:52,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:53,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:53,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762511922] [2021-10-29 04:53:53,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762511922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:53:53,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882866810] [2021-10-29 04:53:53,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 04:53:53,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:53,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:53,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:53:53,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:53:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:53,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 04:53:53,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:53:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:53,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:53:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:54,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882866810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:53:54,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1055288226] [2021-10-29 04:53:54,433 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:53:54,433 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:53:54,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:53:54,434 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:53:54,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:53:54,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,442 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:54,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:53:54,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:53:54,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:53:54,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:53:54,467 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-10-29 04:53:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:54,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:53:54,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:54,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:53:54,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:54,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:54,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:54,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:53:54,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:53:54,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:54,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:53:54,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:53:54,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:53:54,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:53:54,517 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:53:54,518 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:53:54,525 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:53:54,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 04:53:54,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,576 INFO L180 QuantifierPusher]: treesize reduction 20, result has 91.3 percent of original size [2021-10-29 04:53:54,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:53:54,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:53:54,642 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:53:54,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:53:54,656 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:53:55,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:53:55,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:53:55,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2021-10-29 04:53:55,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728944525] [2021-10-29 04:53:55,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-29 04:53:55,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:53:55,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-29 04:53:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1139, Invalid=1513, Unknown=0, NotChecked=0, Total=2652 [2021-10-29 04:53:55,017 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:53:55,135 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2021-10-29 04:53:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-29 04:53:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 04:53:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:53:55,137 INFO L225 Difference]: With dead ends: 55 [2021-10-29 04:53:55,138 INFO L226 Difference]: Without dead ends: 52 [2021-10-29 04:53:55,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1139, Invalid=1513, Unknown=0, NotChecked=0, Total=2652 [2021-10-29 04:53:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-29 04:53:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-29 04:53:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-29 04:53:55,149 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 27 [2021-10-29 04:53:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:53:55,150 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-29 04:53:55,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:53:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-29 04:53:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-29 04:53:55,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:53:55,153 INFO L513 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2021-10-29 04:53:55,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:53:55,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-29 04:53:55,366 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:53:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:53:55,366 INFO L85 PathProgramCache]: Analyzing trace with hash -870639842, now seen corresponding path program 5 times [2021-10-29 04:53:55,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:53:55,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412121037] [2021-10-29 04:53:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:53:55,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:53:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:53:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:56,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:53:56,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412121037] [2021-10-29 04:53:56,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412121037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:53:56,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434969213] [2021-10-29 04:53:56,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:53:56,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:53:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:53:56,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:53:56,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:53:56,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-29 04:53:56,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:53:56,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-29 04:53:56,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:53:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:53:57,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:54:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:00,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434969213] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:54:00,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588364011] [2021-10-29 04:54:00,592 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:54:00,593 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:54:00,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:54:00,593 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:54:00,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:54:00,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:00,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:54:00,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:00,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:54:00,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:54:00,628 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-10-29 04:54:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:00,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:54:00,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:00,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:00,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:00,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,644 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:00,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:00,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:00,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:54:00,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:00,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:00,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:00,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:00,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:54:00,672 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:54:00,672 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:54:00,678 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:54:00,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 04:54:00,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,722 INFO L180 QuantifierPusher]: treesize reduction 20, result has 91.3 percent of original size [2021-10-29 04:54:00,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:54:00,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:00,767 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:54:00,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:54:00,775 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:54:01,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:54:01,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:54:01,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2021-10-29 04:54:01,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121084803] [2021-10-29 04:54:01,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-29 04:54:01,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-29 04:54:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=5329, Unknown=0, NotChecked=0, Total=9900 [2021-10-29 04:54:01,240 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 96 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:01,548 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2021-10-29 04:54:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-29 04:54:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-29 04:54:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:01,551 INFO L225 Difference]: With dead ends: 103 [2021-10-29 04:54:01,552 INFO L226 Difference]: Without dead ends: 100 [2021-10-29 04:54:01,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4571, Invalid=5329, Unknown=0, NotChecked=0, Total=9900 [2021-10-29 04:54:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-29 04:54:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-29 04:54:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-10-29 04:54:01,573 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 51 [2021-10-29 04:54:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:01,573 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-10-29 04:54:01,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-10-29 04:54:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-29 04:54:01,578 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:01,579 INFO L513 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2021-10-29 04:54:01,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-29 04:54:01,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-29 04:54:01,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:54:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash -816254690, now seen corresponding path program 6 times [2021-10-29 04:54:01,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:01,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397914166] [2021-10-29 04:54:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:01,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:06,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:06,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397914166] [2021-10-29 04:54:06,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397914166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:54:06,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853269431] [2021-10-29 04:54:06,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 04:54:06,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:54:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:54:06,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:54:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 04:54:06,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 04:54:06,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:54:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-29 04:54:06,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:54:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:06,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:54:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853269431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:54:07,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305368727] [2021-10-29 04:54:07,701 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:54:07,701 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:54:07,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:54:07,702 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:54:07,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:54:07,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:07,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:54:07,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:07,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:54:07,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:54:07,715 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-10-29 04:54:07,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:07,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:54:07,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:07,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:07,726 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:07,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:07,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:54:07,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:07,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:07,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:07,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:07,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:54:07,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:54:07,755 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:54:07,760 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:54:07,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:54:07,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,805 INFO L180 QuantifierPusher]: treesize reduction 18, result has 92.1 percent of original size [2021-10-29 04:54:07,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:54:07,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:07,875 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:54:07,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:54:07,882 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:54:08,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:54:08,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:54:08,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 102 [2021-10-29 04:54:08,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852656278] [2021-10-29 04:54:08,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-29 04:54:08,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-29 04:54:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5162, Invalid=5968, Unknown=0, NotChecked=0, Total=11130 [2021-10-29 04:54:08,562 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 102 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:08,749 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2021-10-29 04:54:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-29 04:54:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 102 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-29 04:54:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:08,758 INFO L225 Difference]: With dead ends: 109 [2021-10-29 04:54:08,758 INFO L226 Difference]: Without dead ends: 106 [2021-10-29 04:54:08,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5162, Invalid=5968, Unknown=0, NotChecked=0, Total=11130 [2021-10-29 04:54:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-29 04:54:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-29 04:54:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-10-29 04:54:08,802 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2021-10-29 04:54:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:08,803 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-10-29 04:54:08,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 102 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-10-29 04:54:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-29 04:54:08,806 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:08,806 INFO L513 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1] [2021-10-29 04:54:08,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:54:09,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-29 04:54:09,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:54:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash -425773986, now seen corresponding path program 7 times [2021-10-29 04:54:09,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:09,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738261089] [2021-10-29 04:54:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:09,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:15,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:15,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738261089] [2021-10-29 04:54:15,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738261089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:54:15,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041262900] [2021-10-29 04:54:15,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 04:54:15,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:54:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:54:15,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:54:15,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 04:54:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 205 conjunts are in the unsatisfiable core [2021-10-29 04:54:15,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:54:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:16,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:54:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:18,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041262900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:54:18,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [791871001] [2021-10-29 04:54:18,033 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-29 04:54:18,033 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:54:18,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:54:18,034 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:54:18,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:54:18,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,039 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:18,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:54:18,041 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:54:18,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:54:18,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:54:18,047 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 10=[|v_#valid_15|]} [2021-10-29 04:54:18,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:18,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:54:18,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:18,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:54:18,057 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:18,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,062 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:18,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:18,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:54:18,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:54:18,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:18,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:54:18,078 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:54:18,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:54:18,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:54:18,086 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:54:18,086 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:54:18,091 INFO L180 QuantifierPusher]: treesize reduction 19, result has 82.2 percent of original size [2021-10-29 04:54:18,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 04:54:18,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,153 INFO L180 QuantifierPusher]: treesize reduction 18, result has 92.1 percent of original size [2021-10-29 04:54:18,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 04:54:18,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:18,208 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-10-29 04:54:18,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 04:54:18,216 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:54:19,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:54:19,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:54:19,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 105 [2021-10-29 04:54:19,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592494579] [2021-10-29 04:54:19,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-29 04:54:19,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-29 04:54:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11553, Unknown=0, NotChecked=0, Total=11772 [2021-10-29 04:54:19,329 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:24,740 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-10-29 04:54:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-29 04:54:24,744 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-29 04:54:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:24,746 INFO L225 Difference]: With dead ends: 110 [2021-10-29 04:54:24,746 INFO L226 Difference]: Without dead ends: 107 [2021-10-29 04:54:24,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 305 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=224, Invalid=11766, Unknown=0, NotChecked=0, Total=11990 [2021-10-29 04:54:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-29 04:54:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-29 04:54:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-10-29 04:54:24,770 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2021-10-29 04:54:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-10-29 04:54:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-10-29 04:54:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-29 04:54:24,773 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:54:24,774 INFO L513 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1] [2021-10-29 04:54:24,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:54:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:54:25,002 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:54:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:54:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash -314675012, now seen corresponding path program 8 times [2021-10-29 04:54:25,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:54:25,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862714661] [2021-10-29 04:54:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:54:25,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:54:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:54:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:54:30,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:54:30,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862714661] [2021-10-29 04:54:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862714661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:54:30,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:54:30,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2021-10-29 04:54:30,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938868230] [2021-10-29 04:54:30,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-29 04:54:30,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:54:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-29 04:54:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-29 04:54:30,013 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:54:30,431 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-10-29 04:54:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-29 04:54:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-29 04:54:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:54:30,434 INFO L225 Difference]: With dead ends: 107 [2021-10-29 04:54:30,434 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:54:30,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-29 04:54:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:54:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:54:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:54:30,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2021-10-29 04:54:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:54:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:54:30,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:54:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:54:30,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:54:30,444 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:54:30,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-29 04:54:30,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:54:30,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:30,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:54:34,094 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:54:34,096 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 32) (<= ULTIMATE.start_main_~j~0 64) (<= 64 ULTIMATE.start_main_~j~0) (<= 32 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 67) (<= 67 ULTIMATE.start_main_~i~0) (<= 134 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 134)) (and (<= ULTIMATE.start_main_~i~0 24) (<= 48 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 48) (<= 24 ULTIMATE.start_main_~i~0)) (and (<= 38 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 38) (<= 19 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 19)) (and (<= 8 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 16) (<= ULTIMATE.start_main_~i~0 8) (<= 16 ULTIMATE.start_main_~j~0)) (and (<= 114 ULTIMATE.start_main_~j~0) (<= 57 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 114) (<= ULTIMATE.start_main_~i~0 57)) (and (<= ULTIMATE.start_main_~j~0 128) (<= 128 ULTIMATE.start_main_~j~0) (<= 64 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 64)) (and (<= ULTIMATE.start_main_~j~0 52) (<= 26 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 26) (<= 52 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 178) (<= 178 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 89) (<= 89 ULTIMATE.start_main_~i~0)) (and (<= 28 ULTIMATE.start_main_~j~0) (<= 14 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 28) (<= ULTIMATE.start_main_~i~0 14)) (and (<= 60 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 60) (<= ULTIMATE.start_main_~j~0 120) (<= 120 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 69) (<= ULTIMATE.start_main_~j~0 138) (<= 69 ULTIMATE.start_main_~i~0) (<= 138 ULTIMATE.start_main_~j~0)) (and (<= 198 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~i~0 100) (<= ULTIMATE.start_main_~j~0 198) (<= 99 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 172) (<= ULTIMATE.start_main_~i~0 86) (<= 86 ULTIMATE.start_main_~i~0) (<= 172 ULTIMATE.start_main_~j~0)) (and (<= 148 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 74) (<= ULTIMATE.start_main_~j~0 148) (<= 74 ULTIMATE.start_main_~i~0)) (and (<= 136 ULTIMATE.start_main_~j~0) (<= 68 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 68) (<= ULTIMATE.start_main_~j~0 136)) (and (<= ULTIMATE.start_main_~j~0 20) (<= ULTIMATE.start_main_~i~0 10) (<= 10 ULTIMATE.start_main_~i~0) (<= 20 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 46) (<= 92 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 92) (<= 46 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 102) (<= 102 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 51) (<= 51 ULTIMATE.start_main_~i~0)) (and (<= 56 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 56) (<= ULTIMATE.start_main_~j~0 112) (<= 112 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 108) (<= ULTIMATE.start_main_~i~0 54) (<= 108 ULTIMATE.start_main_~j~0) (<= 54 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 44) (<= ULTIMATE.start_main_~j~0 88) (<= 44 ULTIMATE.start_main_~i~0) (<= 88 ULTIMATE.start_main_~j~0)) (and (<= 190 ULTIMATE.start_main_~j~0) (<= 95 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 96) (<= ULTIMATE.start_main_~j~0 190)) (and (<= 75 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 150) (<= ULTIMATE.start_main_~i~0 75) (<= 150 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 91) (<= 182 ULTIMATE.start_main_~j~0) (<= 91 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 182)) (and (<= 6 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 12) (<= ULTIMATE.start_main_~i~0 6) (<= 12 ULTIMATE.start_main_~j~0)) (and (<= 188 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 94) (<= ULTIMATE.start_main_~j~0 188) (<= 94 ULTIMATE.start_main_~i~0)) (and (<= 180 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 180) (<= 90 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 90)) (and (<= 5 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 5) (<= ULTIMATE.start_main_~j~0 10) (<= 10 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 84) (<= 84 ULTIMATE.start_main_~j~0) (<= 42 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 42)) (and (<= ULTIMATE.start_main_~i~0 11) (<= 22 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 22) (<= 11 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 84) (<= 168 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 168) (<= 84 ULTIMATE.start_main_~i~0)) (and (<= 66 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 33) (<= ULTIMATE.start_main_~j~0 66) (<= 33 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 85) (<= ULTIMATE.start_main_~j~0 170) (<= 85 ULTIMATE.start_main_~i~0) (<= 170 ULTIMATE.start_main_~j~0)) (and (<= 34 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 17) (<= ULTIMATE.start_main_~j~0 34) (<= 17 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 122) (<= 61 ULTIMATE.start_main_~i~0) (<= 122 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 61)) (and (<= 72 ULTIMATE.start_main_~j~0) (<= 36 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 72) (<= ULTIMATE.start_main_~i~0 36)) (and (<= 174 ULTIMATE.start_main_~j~0) (<= 87 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 87) (<= ULTIMATE.start_main_~j~0 174)) (and (<= ULTIMATE.start_main_~i~0 70) (<= 140 ULTIMATE.start_main_~j~0) (<= 70 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 140)) (and (<= 38 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 38) (<= ULTIMATE.start_main_~j~0 76) (<= 76 ULTIMATE.start_main_~j~0)) (and (<= 194 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 194) (<= 97 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 98)) (and (<= ULTIMATE.start_main_~j~0 14) (<= ULTIMATE.start_main_~i~0 7) (<= 14 ULTIMATE.start_main_~j~0) (<= 7 ULTIMATE.start_main_~i~0)) (and (<= 82 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 82) (<= 164 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 164)) (and (<= 73 ULTIMATE.start_main_~i~0) (<= 146 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 73) (<= ULTIMATE.start_main_~j~0 146)) (and (<= ULTIMATE.start_main_~i~0 1) (<= 2 ULTIMATE.start_main_~j~0) (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 2)) (and (<= ULTIMATE.start_main_~j~0 26) (<= 13 ULTIMATE.start_main_~i~0) (<= 26 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 13)) (and (<= 2 ULTIMATE.start_main_~i~0) (<= 4 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 2) (<= ULTIMATE.start_main_~j~0 4)) (and (<= 130 ULTIMATE.start_main_~j~0) (<= 65 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 65) (<= ULTIMATE.start_main_~j~0 130)) (and (<= ULTIMATE.start_main_~j~0 142) (<= 142 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 71) (<= 71 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 110) (<= 110 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 55) (<= 55 ULTIMATE.start_main_~i~0)) (and (<= 24 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 24) (<= ULTIMATE.start_main_~i~0 12) (<= 12 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 86) (<= 86 ULTIMATE.start_main_~j~0) (<= 43 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 43)) (and (<= ULTIMATE.start_main_~i~0 34) (<= 34 ULTIMATE.start_main_~i~0) (<= 68 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 68)) (and (<= ULTIMATE.start_main_~i~0 20) (<= 20 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 40) (<= 40 ULTIMATE.start_main_~j~0)) (and (<= 41 ULTIMATE.start_main_~i~0) (<= 82 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 41) (<= ULTIMATE.start_main_~j~0 82)) (and (<= ULTIMATE.start_main_~j~0 106) (<= ULTIMATE.start_main_~i~0 53) (<= 53 ULTIMATE.start_main_~i~0) (<= 106 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 50) (<= ULTIMATE.start_main_~j~0 100) (<= 100 ULTIMATE.start_main_~j~0) (<= 50 ULTIMATE.start_main_~i~0)) (and (<= 45 ULTIMATE.start_main_~i~0) (<= 90 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 90) (<= ULTIMATE.start_main_~i~0 45)) (and (<= ULTIMATE.start_main_~j~0 62) (<= 31 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 31) (<= 62 ULTIMATE.start_main_~j~0)) (and (< ULTIMATE.start_main_~i~0 97) (<= 192 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 192) (<= 96 ULTIMATE.start_main_~i~0)) (and (<= 80 ULTIMATE.start_main_~i~0) (<= 160 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 160) (<= ULTIMATE.start_main_~i~0 80)) (and (<= 32 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 16) (<= ULTIMATE.start_main_~j~0 32) (<= 16 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 79) (<= 158 ULTIMATE.start_main_~j~0) (<= 79 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 158)) (and (<= ULTIMATE.start_main_~j~0 74) (<= ULTIMATE.start_main_~i~0 37) (<= 74 ULTIMATE.start_main_~j~0) (<= 37 ULTIMATE.start_main_~i~0)) (and (<= 154 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 77) (<= 77 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 154)) (and (<= 80 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 80) (<= 40 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 40)) (and (<= 3 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6) (<= ULTIMATE.start_main_~i~0 3) (<= 6 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 78) (<= ULTIMATE.start_main_~j~0 156) (<= 156 ULTIMATE.start_main_~j~0) (<= 78 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 42) (<= 42 ULTIMATE.start_main_~j~0) (<= 21 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 21)) (and (<= ULTIMATE.start_main_~j~0 116) (<= 116 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 58) (<= 58 ULTIMATE.start_main_~i~0)) (and (<= 162 ULTIMATE.start_main_~j~0) (<= 81 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 81) (<= ULTIMATE.start_main_~j~0 162)) (and (<= ULTIMATE.start_main_~i~0 29) (<= 58 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 58) (<= 29 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 83) (<= 83 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 166) (<= 166 ULTIMATE.start_main_~j~0)) (and (<= 96 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 96) (<= 48 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 48)) (and (<= ULTIMATE.start_main_~j~0 186) (<= 186 ULTIMATE.start_main_~j~0) (<= 93 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 93)) (and (<= 44 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 22) (<= ULTIMATE.start_main_~j~0 44) (<= 22 ULTIMATE.start_main_~i~0)) (and (<= 46 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 46) (<= 23 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 23)) (and (<= 36 ULTIMATE.start_main_~j~0) (<= 18 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 36) (<= ULTIMATE.start_main_~i~0 18)) (and (<= ULTIMATE.start_main_~j~0 70) (<= ULTIMATE.start_main_~i~0 35) (<= 35 ULTIMATE.start_main_~i~0) (<= 70 ULTIMATE.start_main_~j~0)) (and (<= 78 ULTIMATE.start_main_~j~0) (<= 39 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 39) (<= ULTIMATE.start_main_~j~0 78)) (and (< ULTIMATE.start_main_~i~0 99) (<= 98 ULTIMATE.start_main_~i~0) (<= 196 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 196)) (and (<= 54 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 27) (<= 27 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 54)) (and (<= ULTIMATE.start_main_~i~0 66) (<= 132 ULTIMATE.start_main_~j~0) (<= 66 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 132)) (and (<= 15 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 15) (<= 30 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 30)) (and (<= 144 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 144) (<= 72 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 72)) (and (<= ULTIMATE.start_main_~j~0 184) (<= ULTIMATE.start_main_~i~0 92) (<= 184 ULTIMATE.start_main_~j~0) (<= 92 ULTIMATE.start_main_~i~0)) (and (<= 49 ULTIMATE.start_main_~i~0) (<= 98 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 98) (<= ULTIMATE.start_main_~i~0 49)) (and (<= ULTIMATE.start_main_~i~0 76) (<= ULTIMATE.start_main_~j~0 152) (<= 152 ULTIMATE.start_main_~j~0) (<= 76 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 126) (<= ULTIMATE.start_main_~i~0 63) (<= 63 ULTIMATE.start_main_~i~0) (<= 126 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 0) (<= 0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~j~0)) (and (<= 118 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 59) (<= 59 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 118)) (and (<= ULTIMATE.start_main_~i~0 88) (<= 88 ULTIMATE.start_main_~i~0) (<= 176 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 176)) (and (<= 4 ULTIMATE.start_main_~i~0) (<= 8 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 8) (<= ULTIMATE.start_main_~i~0 4)) (and (<= 104 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 104) (<= 52 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 52)) (and (<= 50 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 50) (<= ULTIMATE.start_main_~i~0 25) (<= 25 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 28) (<= 28 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 56) (<= 56 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 9) (<= 18 ULTIMATE.start_main_~j~0) (<= 9 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 18)) (and (<= 30 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 30) (<= 60 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 60)) (and (<= 94 ULTIMATE.start_main_~j~0) (<= 47 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 94) (<= ULTIMATE.start_main_~i~0 47)) (and (< 199 ULTIMATE.start_main_~j~0) (<= 100 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 200)) (and (<= 62 ULTIMATE.start_main_~i~0) (<= 124 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 124) (<= ULTIMATE.start_main_~i~0 62))) [2021-10-29 04:54:34,097 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-29 04:54:34,097 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:54:34,097 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-29 04:54:34,098 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-29 04:54:34,098 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-29 04:54:34,098 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-29 04:54:34,098 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-29 04:54:34,102 INFO L731 BasicCegarLoop]: Path program histogram: [8, 1] [2021-10-29 04:54:34,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:54:34,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:54:34 BoogieIcfgContainer [2021-10-29 04:54:34,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:54:34,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:54:34,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:54:34,167 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:54:34,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:53:47" (3/4) ... [2021-10-29 04:54:34,172 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:54:34,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-29 04:54:34,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 04:54:34,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:54:34,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:54:34,229 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:54:34,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:54:34,230 INFO L168 Benchmark]: Toolchain (without parser) took 47485.81 ms. Allocated memory was 104.9 MB in the beginning and 220.2 MB in the end (delta: 115.3 MB). Free memory was 61.9 MB in the beginning and 134.0 MB in the end (delta: -72.0 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,231 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 78.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:54:34,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.77 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 80.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,232 INFO L168 Benchmark]: Boogie Preprocessor took 47.05 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:54:34,232 INFO L168 Benchmark]: RCFGBuilder took 412.11 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,233 INFO L168 Benchmark]: TraceAbstraction took 46590.71 ms. Allocated memory was 104.9 MB in the beginning and 220.2 MB in the end (delta: 115.3 MB). Free memory was 66.9 MB in the beginning and 137.1 MB in the end (delta: -70.3 MB). Peak memory consumption was 136.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,233 INFO L168 Benchmark]: Witness Printer took 62.76 ms. Allocated memory is still 220.2 MB. Free memory was 137.1 MB in the beginning and 134.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:54:34,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 78.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.77 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 80.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.05 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 412.11 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46590.71 ms. Allocated memory was 104.9 MB in the beginning and 220.2 MB in the end (delta: 115.3 MB). Free memory was 66.9 MB in the beginning and 137.1 MB in the end (delta: -70.3 MB). Peak memory consumption was 136.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.76 ms. Allocated memory is still 220.2 MB. Free memory was 137.1 MB in the beginning and 134.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.4s, OverallIterations: 9, TraceHistogramMax: 101, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 1 SDslu, 262 SDs, 0 SdLazy, 11446 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1328 GetRequests, 812 SyntacticMatches, 6 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1438 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=8, InterpolantAutomatonStates: 498, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 104 NumberOfFragments, 1312 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 2 FomulaSimplificationsInter, 264 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1024 ConstructedInterpolants, 0 QuantifiedInterpolants, 4151 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1672 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5151/37896 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((i <= 32 && j <= 64) && 64 <= j) && 32 <= i) || (((i <= 67 && 67 <= i) && 134 <= j) && j <= 134)) || (((i <= 24 && 48 <= j) && j <= 48) && 24 <= i)) || (((38 <= j && j <= 38) && 19 <= i) && i <= 19)) || (((8 <= i && j <= 16) && i <= 8) && 16 <= j)) || (((114 <= j && 57 <= i) && j <= 114) && i <= 57)) || (((j <= 128 && 128 <= j) && 64 <= i) && i <= 64)) || (((j <= 52 && 26 <= i) && i <= 26) && 52 <= j)) || (((j <= 178 && 178 <= j) && i <= 89) && 89 <= i)) || (((28 <= j && 14 <= i) && j <= 28) && i <= 14)) || (((60 <= i && i <= 60) && j <= 120) && 120 <= j)) || (((i <= 69 && j <= 138) && 69 <= i) && 138 <= j)) || (((198 <= j && i < 100) && j <= 198) && 99 <= i)) || (((j <= 172 && i <= 86) && 86 <= i) && 172 <= j)) || (((148 <= j && i <= 74) && j <= 148) && 74 <= i)) || (((136 <= j && 68 <= i) && i <= 68) && j <= 136)) || (((j <= 20 && i <= 10) && 10 <= i) && 20 <= j)) || (((i <= 46 && 92 <= j) && j <= 92) && 46 <= i)) || (((j <= 102 && 102 <= j) && i <= 51) && 51 <= i)) || (((56 <= i && i <= 56) && j <= 112) && 112 <= j)) || (((j <= 108 && i <= 54) && 108 <= j) && 54 <= i)) || (((i <= 44 && j <= 88) && 44 <= i) && 88 <= j)) || (((190 <= j && 95 <= i) && i < 96) && j <= 190)) || (((75 <= i && j <= 150) && i <= 75) && 150 <= j)) || (((i <= 91 && 182 <= j) && 91 <= i) && j <= 182)) || (((6 <= i && j <= 12) && i <= 6) && 12 <= j)) || (((188 <= j && i <= 94) && j <= 188) && 94 <= i)) || (((180 <= j && j <= 180) && 90 <= i) && i <= 90)) || (((5 <= i && i <= 5) && j <= 10) && 10 <= j)) || (((j <= 84 && 84 <= j) && 42 <= i) && i <= 42)) || (((i <= 11 && 22 <= j) && j <= 22) && 11 <= i)) || (((i <= 84 && 168 <= j) && j <= 168) && 84 <= i)) || (((66 <= j && i <= 33) && j <= 66) && 33 <= i)) || (((i <= 85 && j <= 170) && 85 <= i) && 170 <= j)) || (((34 <= j && i <= 17) && j <= 34) && 17 <= i)) || (((j <= 122 && 61 <= i) && 122 <= j) && i <= 61)) || (((72 <= j && 36 <= i) && j <= 72) && i <= 36)) || (((174 <= j && 87 <= i) && i <= 87) && j <= 174)) || (((i <= 70 && 140 <= j) && 70 <= i) && j <= 140)) || (((38 <= i && i <= 38) && j <= 76) && 76 <= j)) || (((194 <= j && j <= 194) && 97 <= i) && i < 98)) || (((j <= 14 && i <= 7) && 14 <= j) && 7 <= i)) || (((82 <= i && i <= 82) && 164 <= j) && j <= 164)) || (((73 <= i && 146 <= j) && i <= 73) && j <= 146)) || (((i <= 1 && 2 <= j) && 1 <= i) && j <= 2)) || (((j <= 26 && 13 <= i) && 26 <= j) && i <= 13)) || (((2 <= i && 4 <= j) && i <= 2) && j <= 4)) || (((130 <= j && 65 <= i) && i <= 65) && j <= 130)) || (((j <= 142 && 142 <= j) && i <= 71) && 71 <= i)) || (((j <= 110 && 110 <= j) && i <= 55) && 55 <= i)) || (((24 <= j && j <= 24) && i <= 12) && 12 <= i)) || (((j <= 86 && 86 <= j) && 43 <= i) && i <= 43)) || (((i <= 34 && 34 <= i) && 68 <= j) && j <= 68)) || (((i <= 20 && 20 <= i) && j <= 40) && 40 <= j)) || (((41 <= i && 82 <= j) && i <= 41) && j <= 82)) || (((j <= 106 && i <= 53) && 53 <= i) && 106 <= j)) || (((i <= 50 && j <= 100) && 100 <= j) && 50 <= i)) || (((45 <= i && 90 <= j) && j <= 90) && i <= 45)) || (((j <= 62 && 31 <= i) && i <= 31) && 62 <= j)) || (((i < 97 && 192 <= j) && j <= 192) && 96 <= i)) || (((80 <= i && 160 <= j) && j <= 160) && i <= 80)) || (((32 <= j && i <= 16) && j <= 32) && 16 <= i)) || (((i <= 79 && 158 <= j) && 79 <= i) && j <= 158)) || (((j <= 74 && i <= 37) && 74 <= j) && 37 <= i)) || (((154 <= j && i <= 77) && 77 <= i) && j <= 154)) || (((80 <= j && j <= 80) && 40 <= i) && i <= 40)) || (((3 <= i && j <= 6) && i <= 3) && 6 <= j)) || (((i <= 78 && j <= 156) && 156 <= j) && 78 <= i)) || (((j <= 42 && 42 <= j) && 21 <= i) && i <= 21)) || (((j <= 116 && 116 <= j) && i <= 58) && 58 <= i)) || (((162 <= j && 81 <= i) && i <= 81) && j <= 162)) || (((i <= 29 && 58 <= j) && j <= 58) && 29 <= i)) || (((i <= 83 && 83 <= i) && j <= 166) && 166 <= j)) || (((96 <= j && j <= 96) && 48 <= i) && i <= 48)) || (((j <= 186 && 186 <= j) && 93 <= i) && i <= 93)) || (((44 <= j && i <= 22) && j <= 44) && 22 <= i)) || (((46 <= j && j <= 46) && 23 <= i) && i <= 23)) || (((36 <= j && 18 <= i) && j <= 36) && i <= 18)) || (((j <= 70 && i <= 35) && 35 <= i) && 70 <= j)) || (((78 <= j && 39 <= i) && i <= 39) && j <= 78)) || (((i < 99 && 98 <= i) && 196 <= j) && j <= 196)) || (((54 <= j && i <= 27) && 27 <= i) && j <= 54)) || (((i <= 66 && 132 <= j) && 66 <= i) && j <= 132)) || (((15 <= i && i <= 15) && 30 <= j) && j <= 30)) || (((144 <= j && j <= 144) && 72 <= i) && i <= 72)) || (((j <= 184 && i <= 92) && 184 <= j) && 92 <= i)) || (((49 <= i && 98 <= j) && j <= 98) && i <= 49)) || (((i <= 76 && j <= 152) && 152 <= j) && 76 <= i)) || (((j <= 126 && i <= 63) && 63 <= i) && 126 <= j)) || (((j <= 0 && 0 <= i) && i <= 0) && 0 <= j)) || (((118 <= j && i <= 59) && 59 <= i) && j <= 118)) || (((i <= 88 && 88 <= i) && 176 <= j) && j <= 176)) || (((4 <= i && 8 <= j) && j <= 8) && i <= 4)) || (((104 <= j && j <= 104) && 52 <= i) && i <= 52)) || (((50 <= j && j <= 50) && i <= 25) && 25 <= i)) || (((i <= 28 && 28 <= i) && j <= 56) && 56 <= j)) || (((i <= 9 && 18 <= j) && 9 <= i) && j <= 18)) || (((30 <= i && i <= 30) && 60 <= j) && j <= 60)) || (((94 <= j && 47 <= i) && j <= 94) && i <= 47)) || ((199 < j && 100 <= i) && j <= 200)) || (((62 <= i && 124 <= j) && j <= 124) && i <= 62) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 04:54:34,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44dad974-7819-40ea-bc55-fd2dcddbaea2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...