./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:35:27,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:35:27,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:35:27,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:35:27,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:35:27,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:35:27,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:35:27,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:35:27,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:35:27,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:35:27,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:35:27,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:35:27,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:35:27,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:35:27,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:35:27,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:35:27,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:35:27,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:35:27,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:35:27,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:35:27,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:35:27,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:35:27,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:35:27,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:35:27,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:35:27,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:35:27,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:35:27,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:35:27,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:35:27,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:35:27,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:35:27,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:35:27,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:35:27,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:35:27,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:35:27,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:35:27,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:35:27,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:35:27,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:35:27,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:35:27,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:35:27,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:35:27,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:35:27,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:35:27,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:35:27,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:35:27,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:35:27,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:35:27,367 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:35:27,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:35:27,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:35:27,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:35:27,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:35:27,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:35:27,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:35:27,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:35:27,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:35:27,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:35:27,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:35:27,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:35:27,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:35:27,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:35:27,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:35:27,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:35:27,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:35:27,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:35:27,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:35:27,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:35:27,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:35:27,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:35:27,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:35:27,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:35:27,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:35:27,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:35:27,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2021-11-09 09:35:27,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:35:27,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:35:27,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:35:27,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:35:27,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:35:27,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-09 09:35:27,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/data/f00b8fea6/2c0f5db8c7b045e59cf628dfb76fb1c7/FLAG4ca9f6575 [2021-11-09 09:35:28,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:35:28,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-09 09:35:28,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/data/f00b8fea6/2c0f5db8c7b045e59cf628dfb76fb1c7/FLAG4ca9f6575 [2021-11-09 09:35:28,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/data/f00b8fea6/2c0f5db8c7b045e59cf628dfb76fb1c7 [2021-11-09 09:35:28,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:35:28,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:35:28,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:35:28,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:35:28,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:35:28,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:35:28" (1/1) ... [2021-11-09 09:35:28,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1044b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:28, skipping insertion in model container [2021-11-09 09:35:28,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:35:28" (1/1) ... [2021-11-09 09:35:28,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:35:28,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:35:29,087 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_24a4dee6-3449-4aa0-979d-be25c54fb6f3/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-09 09:35:29,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:35:29,114 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:35:29,172 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_24a4dee6-3449-4aa0-979d-be25c54fb6f3/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-09 09:35:29,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:35:29,209 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:35:29,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29 WrapperNode [2021-11-09 09:35:29,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:35:29,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:35:29,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:35:29,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:35:29,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:35:29,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:35:29,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:35:29,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:35:29,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:35:29,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:35:29,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:35:29,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:35:29,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (1/1) ... [2021-11-09 09:35:29,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:35:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:29,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:35:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:35:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:35:29,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:35:29,801 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-09 09:35:29,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:35:29 BoogieIcfgContainer [2021-11-09 09:35:29,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:35:29,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:35:29,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:35:29,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:35:29,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:35:28" (1/3) ... [2021-11-09 09:35:29,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f665d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:35:29, skipping insertion in model container [2021-11-09 09:35:29,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:35:29" (2/3) ... [2021-11-09 09:35:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f665d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:35:29, skipping insertion in model container [2021-11-09 09:35:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:35:29" (3/3) ... [2021-11-09 09:35:29,832 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2021-11-09 09:35:29,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:35:29,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:35:29,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:35:29,944 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:35:29,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:35:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 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) [2021-11-09 09:35:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:35:29,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:29,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:29,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1332003061, now seen corresponding path program 1 times [2021-11-09 09:35:30,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:30,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524429541] [2021-11-09 09:35:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:30,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:30,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:30,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524429541] [2021-11-09 09:35:30,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524429541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:30,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:30,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:30,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498482330] [2021-11-09 09:35:30,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:30,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:30,265 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:30,300 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2021-11-09 09:35:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 09:35:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:30,312 INFO L225 Difference]: With dead ends: 64 [2021-11-09 09:35:30,313 INFO L226 Difference]: Without dead ends: 31 [2021-11-09 09:35:30,317 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 [2021-11-09 09:35:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-09 09:35:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-11-09 09:35:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2021-11-09 09:35:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-11-09 09:35:30,357 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 17 [2021-11-09 09:35:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:30,357 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-11-09 09:35:30,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-11-09 09:35:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:35:30,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:30,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:30,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:35:30,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -826131671, now seen corresponding path program 1 times [2021-11-09 09:35:30,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:30,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162048006] [2021-11-09 09:35:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:30,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:30,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:30,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162048006] [2021-11-09 09:35:30,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162048006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:30,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005509813] [2021-11-09 09:35:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:30,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:30,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:30,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:35:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:30,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:35:30,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:35:30,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005509813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:30,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:35:30,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-09 09:35:30,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455216188] [2021-11-09 09:35:30,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:30,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:30,635 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:30,679 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2021-11-09 09:35:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:30,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-09 09:35:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:30,681 INFO L225 Difference]: With dead ends: 62 [2021-11-09 09:35:30,681 INFO L226 Difference]: Without dead ends: 42 [2021-11-09 09:35:30,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-09 09:35:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-09 09:35:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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) [2021-11-09 09:35:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-09 09:35:30,691 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2021-11-09 09:35:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:30,691 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-09 09:35:30,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-09 09:35:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 09:35:30,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:30,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:30,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:30,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:30,902 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1925905852, now seen corresponding path program 1 times [2021-11-09 09:35:30,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:30,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248530663] [2021-11-09 09:35:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:30,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:35:30,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:30,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248530663] [2021-11-09 09:35:30,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248530663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:30,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944772587] [2021-11-09 09:35:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:30,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:30,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:31,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:35:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:31,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:35:31,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:35:31,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944772587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:31,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:35:31,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-09 09:35:31,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862636569] [2021-11-09 09:35:31,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:31,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:31,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:31,210 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-09 09:35:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:31,234 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-09 09:35:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-09 09:35:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:31,237 INFO L225 Difference]: With dead ends: 46 [2021-11-09 09:35:31,237 INFO L226 Difference]: Without dead ends: 35 [2021-11-09 09:35:31,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-09 09:35:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-09 09:35:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-09 09:35:31,253 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2021-11-09 09:35:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:31,254 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-09 09:35:31,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-09 09:35:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-09 09:35:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 09:35:31,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:31,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:31,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:31,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:31,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1542894914, now seen corresponding path program 1 times [2021-11-09 09:35:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:31,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485279181] [2021-11-09 09:35:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:31,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:35:31,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:31,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485279181] [2021-11-09 09:35:31,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485279181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:31,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815069253] [2021-11-09 09:35:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:31,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:31,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:31,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:31,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:35:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:31,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:35:31,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:35:31,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815069253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:31,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:31,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:35:31,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988879579] [2021-11-09 09:35:31,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:35:31,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:35:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:31,755 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:31,773 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2021-11-09 09:35:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:35:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-09 09:35:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:31,775 INFO L225 Difference]: With dead ends: 66 [2021-11-09 09:35:31,775 INFO L226 Difference]: Without dead ends: 37 [2021-11-09 09:35:31,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-09 09:35:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-09 09:35:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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) [2021-11-09 09:35:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-11-09 09:35:31,782 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2021-11-09 09:35:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:31,782 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-11-09 09:35:31,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-11-09 09:35:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 09:35:31,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:31,784 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:31,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:32,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:32,005 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:32,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:32,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1235585152, now seen corresponding path program 2 times [2021-11-09 09:35:32,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:32,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004548540] [2021-11-09 09:35:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:32,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:35:32,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:32,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004548540] [2021-11-09 09:35:32,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004548540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:32,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992527432] [2021-11-09 09:35:32,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:35:32,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:32,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:32,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:35:32,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:35:32,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:32,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:35:32,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:35:32,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992527432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:32,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:32,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-09 09:35:32,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803784663] [2021-11-09 09:35:32,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:35:32,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:35:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:35:32,355 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-11-09 09:35:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:32,455 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2021-11-09 09:35:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:35:32,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 35 [2021-11-09 09:35:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:32,457 INFO L225 Difference]: With dead ends: 89 [2021-11-09 09:35:32,457 INFO L226 Difference]: Without dead ends: 60 [2021-11-09 09:35:32,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:35:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-09 09:35:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-11-09 09:35:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 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) [2021-11-09 09:35:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-09 09:35:32,464 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2021-11-09 09:35:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:32,465 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-09 09:35:32,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-11-09 09:35:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-09 09:35:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:35:32,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:32,467 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:32,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:32,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:32,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 145959385, now seen corresponding path program 3 times [2021-11-09 09:35:32,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:32,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390973909] [2021-11-09 09:35:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:32,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-09 09:35:32,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:32,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390973909] [2021-11-09 09:35:32,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390973909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:32,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309498157] [2021-11-09 09:35:32,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:35:32,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:32,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:32,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:32,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:35:32,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:35:32,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:32,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:35:32,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-09 09:35:33,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309498157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:33,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:33,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:35:33,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884898348] [2021-11-09 09:35:33,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:35:33,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:33,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:35:33,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:33,072 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:33,103 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2021-11-09 09:35:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:35:33,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-09 09:35:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:33,108 INFO L225 Difference]: With dead ends: 68 [2021-11-09 09:35:33,108 INFO L226 Difference]: Without dead ends: 53 [2021-11-09 09:35:33,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-09 09:35:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-11-09 09:35:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 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) [2021-11-09 09:35:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-11-09 09:35:33,115 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 49 [2021-11-09 09:35:33,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:33,115 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-11-09 09:35:33,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-11-09 09:35:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:35:33,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:33,119 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:33,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:33,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:33,338 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -523940009, now seen corresponding path program 4 times [2021-11-09 09:35:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047169388] [2021-11-09 09:35:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:33,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-09 09:35:33,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:33,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047169388] [2021-11-09 09:35:33,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047169388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:33,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640802446] [2021-11-09 09:35:33,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:35:33,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:33,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:33,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:33,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:35:33,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:35:33,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:33,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:35:33,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-09 09:35:33,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640802446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:33,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:33,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-11-09 09:35:33,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063439461] [2021-11-09 09:35:33,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:33,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:33,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:33,709 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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) [2021-11-09 09:35:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:33,807 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2021-11-09 09:35:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:35:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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 51 [2021-11-09 09:35:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:33,815 INFO L225 Difference]: With dead ends: 119 [2021-11-09 09:35:33,816 INFO L226 Difference]: Without dead ends: 76 [2021-11-09 09:35:33,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-09 09:35:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2021-11-09 09:35:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 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) [2021-11-09 09:35:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2021-11-09 09:35:33,830 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 51 [2021-11-09 09:35:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:33,831 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2021-11-09 09:35:33,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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) [2021-11-09 09:35:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2021-11-09 09:35:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:35:33,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:33,839 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:33,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:34,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 09:35:34,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1093795888, now seen corresponding path program 5 times [2021-11-09 09:35:34,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:34,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126190569] [2021-11-09 09:35:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:34,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-09 09:35:34,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:34,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126190569] [2021-11-09 09:35:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126190569] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:34,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403701349] [2021-11-09 09:35:34,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:35:34,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:34,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:34,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:34,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:35:34,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-09 09:35:34,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:34,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:35:34,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-09 09:35:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403701349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:34,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-11-09 09:35:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842966847] [2021-11-09 09:35:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:34,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:34,626 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2021-11-09 09:35:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:34,742 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2021-11-09 09:35:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:35:34,742 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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 65 [2021-11-09 09:35:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:34,744 INFO L225 Difference]: With dead ends: 145 [2021-11-09 09:35:34,744 INFO L226 Difference]: Without dead ends: 90 [2021-11-09 09:35:34,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-09 09:35:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2021-11-09 09:35:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 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) [2021-11-09 09:35:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2021-11-09 09:35:34,758 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 65 [2021-11-09 09:35:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:34,759 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2021-11-09 09:35:34,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2021-11-09 09:35:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2021-11-09 09:35:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:35:34,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:34,761 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:34,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:34,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-09 09:35:34,962 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:34,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 988057353, now seen corresponding path program 6 times [2021-11-09 09:35:34,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:34,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475833559] [2021-11-09 09:35:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:34,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-09 09:35:35,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:35,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475833559] [2021-11-09 09:35:35,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475833559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:35,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718851365] [2021-11-09 09:35:35,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:35:35,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:35,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:35,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:35:35,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-11-09 09:35:35,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:35,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:35:35,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-09 09:35:35,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718851365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:35,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:35,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-11-09 09:35:35,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914445399] [2021-11-09 09:35:35,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:35,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:35,693 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2021-11-09 09:35:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:35,745 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2021-11-09 09:35:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:35:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 79 [2021-11-09 09:35:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:35,748 INFO L225 Difference]: With dead ends: 153 [2021-11-09 09:35:35,748 INFO L226 Difference]: Without dead ends: 86 [2021-11-09 09:35:35,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-09 09:35:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-11-09 09:35:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 83 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) [2021-11-09 09:35:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2021-11-09 09:35:35,766 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 79 [2021-11-09 09:35:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:35,766 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2021-11-09 09:35:35,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2021-11-09 09:35:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2021-11-09 09:35:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:35:35,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:35,769 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:35,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:35,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:35,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash -820859067, now seen corresponding path program 7 times [2021-11-09 09:35:35,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:35,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209325771] [2021-11-09 09:35:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:35,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:35:36,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:36,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209325771] [2021-11-09 09:35:36,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209325771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:36,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458258851] [2021-11-09 09:35:36,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:35:36,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:36,109 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:36,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:35:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:36,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:35:36,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:35:36,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458258851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:36,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:36,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-09 09:35:36,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933245836] [2021-11-09 09:35:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:35:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:35:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:35:36,537 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-11-09 09:35:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:36,563 INFO L93 Difference]: Finished difference Result 156 states and 188 transitions. [2021-11-09 09:35:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:35:36,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 83 [2021-11-09 09:35:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:36,564 INFO L225 Difference]: With dead ends: 156 [2021-11-09 09:35:36,564 INFO L226 Difference]: Without dead ends: 87 [2021-11-09 09:35:36,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:35:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-09 09:35:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-11-09 09:35:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2) internal successors, (102), 85 states have internal predecessors, (102), 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) [2021-11-09 09:35:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2021-11-09 09:35:36,582 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 83 [2021-11-09 09:35:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:36,582 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2021-11-09 09:35:36,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-11-09 09:35:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2021-11-09 09:35:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:35:36,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:36,584 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:36,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:36,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:35:36,788 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1166543101, now seen corresponding path program 8 times [2021-11-09 09:35:36,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:36,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398863955] [2021-11-09 09:35:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:35:36,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:36,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398863955] [2021-11-09 09:35:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398863955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:36,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910573369] [2021-11-09 09:35:36,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:35:36,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:36,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:36,919 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:36,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:35:37,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:35:37,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:37,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:35:37,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:35:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910573369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:37,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-09 09:35:37,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762722514] [2021-11-09 09:35:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:37,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:37,363 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2021-11-09 09:35:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:37,405 INFO L93 Difference]: Finished difference Result 158 states and 190 transitions. [2021-11-09 09:35:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:35:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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 85 [2021-11-09 09:35:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:37,408 INFO L225 Difference]: With dead ends: 158 [2021-11-09 09:35:37,408 INFO L226 Difference]: Without dead ends: 89 [2021-11-09 09:35:37,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-09 09:35:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-11-09 09:35:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 87 states have internal predecessors, (104), 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) [2021-11-09 09:35:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2021-11-09 09:35:37,416 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 85 [2021-11-09 09:35:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:37,419 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2021-11-09 09:35:37,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2021-11-09 09:35:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2021-11-09 09:35:37,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 09:35:37,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:37,431 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:37,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:37,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:37,645 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1638549313, now seen corresponding path program 9 times [2021-11-09 09:35:37,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:37,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730288243] [2021-11-09 09:35:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:37,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:35:37,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:37,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730288243] [2021-11-09 09:35:37,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730288243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:37,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070153437] [2021-11-09 09:35:37,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:35:37,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:37,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:37,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:35:38,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:35:38,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:38,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:35:38,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-09 09:35:38,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070153437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:38,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:38,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-11-09 09:35:38,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884078229] [2021-11-09 09:35:38,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:35:38,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:35:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:35:38,529 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2021-11-09 09:35:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:38,599 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2021-11-09 09:35:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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 87 [2021-11-09 09:35:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:38,601 INFO L225 Difference]: With dead ends: 163 [2021-11-09 09:35:38,601 INFO L226 Difference]: Without dead ends: 94 [2021-11-09 09:35:38,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:35:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-09 09:35:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-11-09 09:35:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2021-11-09 09:35:38,615 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 87 [2021-11-09 09:35:38,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:38,618 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2021-11-09 09:35:38,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 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) [2021-11-09 09:35:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2021-11-09 09:35:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:35:38,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:38,621 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:38,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:38,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:38,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1655760003, now seen corresponding path program 10 times [2021-11-09 09:35:38,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:38,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672495509] [2021-11-09 09:35:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:38,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-09 09:35:38,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:38,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672495509] [2021-11-09 09:35:38,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672495509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:38,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313592091] [2021-11-09 09:35:38,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:35:38,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:38,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:38,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:35:39,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:35:39,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:39,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:35:39,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-09 09:35:39,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313592091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:39,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:39,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2021-11-09 09:35:39,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493041338] [2021-11-09 09:35:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 09:35:39,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 09:35:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:35:39,482 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) [2021-11-09 09:35:39,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:39,636 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2021-11-09 09:35:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:35:39,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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 91 [2021-11-09 09:35:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:39,638 INFO L225 Difference]: With dead ends: 186 [2021-11-09 09:35:39,638 INFO L226 Difference]: Without dead ends: 115 [2021-11-09 09:35:39,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:35:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-09 09:35:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2021-11-09 09:35:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 105 states have internal predecessors, (125), 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) [2021-11-09 09:35:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2021-11-09 09:35:39,643 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 91 [2021-11-09 09:35:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:39,643 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2021-11-09 09:35:39,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) [2021-11-09 09:35:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2021-11-09 09:35:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 09:35:39,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:39,646 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:39,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:39,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:35:39,848 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2134419114, now seen corresponding path program 11 times [2021-11-09 09:35:39,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:39,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997185478] [2021-11-09 09:35:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:39,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-09 09:35:39,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997185478] [2021-11-09 09:35:39,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997185478] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140065637] [2021-11-09 09:35:39,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:35:39,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:39,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:39,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:40,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:35:40,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-09 09:35:40,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:40,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:35:40,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-09 09:35:41,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140065637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:41,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:41,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-09 09:35:41,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428437158] [2021-11-09 09:35:41,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:41,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:41,060 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 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) [2021-11-09 09:35:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:41,165 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2021-11-09 09:35:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:35:41,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 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 [2021-11-09 09:35:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:41,168 INFO L225 Difference]: With dead ends: 188 [2021-11-09 09:35:41,168 INFO L226 Difference]: Without dead ends: 127 [2021-11-09 09:35:41,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-09 09:35:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2021-11-09 09:35:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 117 states have internal predecessors, (140), 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) [2021-11-09 09:35:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2021-11-09 09:35:41,174 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 105 [2021-11-09 09:35:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:41,174 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2021-11-09 09:35:41,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 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) [2021-11-09 09:35:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2021-11-09 09:35:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 09:35:41,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:41,176 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:41,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:41,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:35:41,389 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1481892623, now seen corresponding path program 12 times [2021-11-09 09:35:41,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:41,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015021698] [2021-11-09 09:35:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:41,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-09 09:35:41,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:41,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015021698] [2021-11-09 09:35:41,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015021698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:41,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137446328] [2021-11-09 09:35:41,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:35:41,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:41,491 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:41,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:35:42,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-09 09:35:42,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:42,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:35:42,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-09 09:35:42,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137446328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:42,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:42,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-11-09 09:35:42,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470239827] [2021-11-09 09:35:42,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:35:42,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:35:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:35:42,755 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-09 09:35:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:42,912 INFO L93 Difference]: Finished difference Result 211 states and 257 transitions. [2021-11-09 09:35:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:35:42,913 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 117 [2021-11-09 09:35:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:42,914 INFO L225 Difference]: With dead ends: 211 [2021-11-09 09:35:42,914 INFO L226 Difference]: Without dead ends: 142 [2021-11-09 09:35:42,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:35:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-09 09:35:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2021-11-09 09:35:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.1984732824427482) internal successors, (157), 131 states have internal predecessors, (157), 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) [2021-11-09 09:35:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2021-11-09 09:35:42,920 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 117 [2021-11-09 09:35:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:42,920 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2021-11-09 09:35:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-09 09:35:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2021-11-09 09:35:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-09 09:35:42,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:42,922 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:43,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 09:35:43,122 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1228068982, now seen corresponding path program 13 times [2021-11-09 09:35:43,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:43,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30007121] [2021-11-09 09:35:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:43,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-11-09 09:35:43,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:43,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30007121] [2021-11-09 09:35:43,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30007121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:43,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839636513] [2021-11-09 09:35:43,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:35:43,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:43,243 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:43,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:35:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:43,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:35:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-11-09 09:35:43,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839636513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:43,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:43,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-09 09:35:43,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603437799] [2021-11-09 09:35:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:43,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:43,970 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-11-09 09:35:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:44,098 INFO L93 Difference]: Finished difference Result 232 states and 282 transitions. [2021-11-09 09:35:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:35:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 131 [2021-11-09 09:35:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:44,100 INFO L225 Difference]: With dead ends: 232 [2021-11-09 09:35:44,100 INFO L226 Difference]: Without dead ends: 153 [2021-11-09 09:35:44,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-09 09:35:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2021-11-09 09:35:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2027972027972027) internal successors, (172), 143 states have internal predecessors, (172), 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) [2021-11-09 09:35:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2021-11-09 09:35:44,107 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 131 [2021-11-09 09:35:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:44,108 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2021-11-09 09:35:44,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-11-09 09:35:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2021-11-09 09:35:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-09 09:35:44,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:44,110 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:44,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:44,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:44,333 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash -831909083, now seen corresponding path program 14 times [2021-11-09 09:35:44,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:44,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209426495] [2021-11-09 09:35:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:44,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-09 09:35:44,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:44,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209426495] [2021-11-09 09:35:44,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209426495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:44,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030225405] [2021-11-09 09:35:44,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:35:44,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:44,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:44,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:35:45,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:35:45,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:45,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:35:45,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-09 09:35:45,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030225405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:45,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:45,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-11-09 09:35:45,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573642433] [2021-11-09 09:35:45,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:35:45,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:35:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:45,409 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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) [2021-11-09 09:35:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:45,556 INFO L93 Difference]: Finished difference Result 252 states and 307 transitions. [2021-11-09 09:35:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:35:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 143 [2021-11-09 09:35:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:45,558 INFO L225 Difference]: With dead ends: 252 [2021-11-09 09:35:45,558 INFO L226 Difference]: Without dead ends: 165 [2021-11-09 09:35:45,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-09 09:35:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2021-11-09 09:35:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.206451612903226) internal successors, (187), 155 states have internal predecessors, (187), 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) [2021-11-09 09:35:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2021-11-09 09:35:45,566 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 143 [2021-11-09 09:35:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:45,567 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2021-11-09 09:35:45,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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) [2021-11-09 09:35:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2021-11-09 09:35:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-09 09:35:45,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:45,569 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:45,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:45,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:45,793 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1796886976, now seen corresponding path program 15 times [2021-11-09 09:35:45,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:45,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464735615] [2021-11-09 09:35:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:45,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-09 09:35:45,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:45,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464735615] [2021-11-09 09:35:45,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464735615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:45,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446937828] [2021-11-09 09:35:45,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:35:45,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:45,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:46,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:35:46,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-09 09:35:46,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:46,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:35:46,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-11-09 09:35:47,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446937828] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:47,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:47,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2021-11-09 09:35:47,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372903378] [2021-11-09 09:35:47,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:47,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:47,309 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 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) [2021-11-09 09:35:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:47,534 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2021-11-09 09:35:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:35:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 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 155 [2021-11-09 09:35:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:47,537 INFO L225 Difference]: With dead ends: 266 [2021-11-09 09:35:47,537 INFO L226 Difference]: Without dead ends: 171 [2021-11-09 09:35:47,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-09 09:35:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-11-09 09:35:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2071005917159763) internal successors, (204), 169 states have internal predecessors, (204), 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) [2021-11-09 09:35:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2021-11-09 09:35:47,554 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 155 [2021-11-09 09:35:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:47,554 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2021-11-09 09:35:47,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 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) [2021-11-09 09:35:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2021-11-09 09:35:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:35:47,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:47,557 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:47,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:47,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:35:47,773 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1951319001, now seen corresponding path program 16 times [2021-11-09 09:35:47,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:47,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755376323] [2021-11-09 09:35:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:47,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:47,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:47,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755376323] [2021-11-09 09:35:47,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755376323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:47,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551050540] [2021-11-09 09:35:47,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:35:47,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:47,962 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 09:35:48,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:35:48,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:48,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:35:48,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:48,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551050540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:48,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:48,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-09 09:35:48,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129089837] [2021-11-09 09:35:48,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:35:48,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:35:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:35:48,983 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-11-09 09:35:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:49,016 INFO L93 Difference]: Finished difference Result 220 states and 265 transitions. [2021-11-09 09:35:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:35:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 169 [2021-11-09 09:35:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:49,019 INFO L225 Difference]: With dead ends: 220 [2021-11-09 09:35:49,019 INFO L226 Difference]: Without dead ends: 173 [2021-11-09 09:35:49,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:35:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-09 09:35:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-11-09 09:35:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.2046783625730995) internal successors, (206), 171 states have internal predecessors, (206), 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) [2021-11-09 09:35:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2021-11-09 09:35:49,027 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 169 [2021-11-09 09:35:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:49,028 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2021-11-09 09:35:49,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2021-11-09 09:35:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2021-11-09 09:35:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-09 09:35:49,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:49,030 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:49,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:49,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:49,257 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2098788521, now seen corresponding path program 17 times [2021-11-09 09:35:49,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:49,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922476665] [2021-11-09 09:35:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:49,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:49,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:49,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922476665] [2021-11-09 09:35:49,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922476665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:49,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106575112] [2021-11-09 09:35:49,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:35:49,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:49,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:49,455 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 09:35:50,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-09 09:35:50,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:35:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:51,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106575112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:51,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:51,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-09 09:35:51,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082618338] [2021-11-09 09:35:51,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:51,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:51,086 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2021-11-09 09:35:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:51,119 INFO L93 Difference]: Finished difference Result 222 states and 267 transitions. [2021-11-09 09:35:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:35:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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 171 [2021-11-09 09:35:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:51,122 INFO L225 Difference]: With dead ends: 222 [2021-11-09 09:35:51,122 INFO L226 Difference]: Without dead ends: 175 [2021-11-09 09:35:51,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-09 09:35:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-11-09 09:35:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 173 states have internal predecessors, (208), 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) [2021-11-09 09:35:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2021-11-09 09:35:51,130 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 171 [2021-11-09 09:35:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:51,131 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2021-11-09 09:35:51,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 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) [2021-11-09 09:35:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2021-11-09 09:35:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-09 09:35:51,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:51,133 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:51,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:51,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:51,346 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1283220309, now seen corresponding path program 18 times [2021-11-09 09:35:51,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:51,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877962781] [2021-11-09 09:35:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:51,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:51,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:51,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877962781] [2021-11-09 09:35:51,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877962781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:51,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792654677] [2021-11-09 09:35:51,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:35:51,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:51,532 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:51,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 09:35:53,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-09 09:35:53,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:53,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 09:35:53,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-09 09:35:54,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792654677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:54,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:54,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-11-09 09:35:54,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006489649] [2021-11-09 09:35:54,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:35:54,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:35:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:54,262 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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) [2021-11-09 09:35:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:54,297 INFO L93 Difference]: Finished difference Result 223 states and 268 transitions. [2021-11-09 09:35:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:35:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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 173 [2021-11-09 09:35:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:54,299 INFO L225 Difference]: With dead ends: 223 [2021-11-09 09:35:54,299 INFO L226 Difference]: Without dead ends: 176 [2021-11-09 09:35:54,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:35:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-09 09:35:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-09 09:35:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.2) internal successors, (210), 175 states have internal predecessors, (210), 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) [2021-11-09 09:35:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2021-11-09 09:35:54,308 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 173 [2021-11-09 09:35:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:54,309 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2021-11-09 09:35:54,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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) [2021-11-09 09:35:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2021-11-09 09:35:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:35:54,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:54,327 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:54,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:54,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:54,546 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 103462867, now seen corresponding path program 19 times [2021-11-09 09:35:54,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:54,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241111177] [2021-11-09 09:35:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:54,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 52 proven. 130 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-09 09:35:56,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:56,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241111177] [2021-11-09 09:35:56,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241111177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:35:56,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479514492] [2021-11-09 09:35:56,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:35:56,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:56,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:35:56,129 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:35:56,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 09:35:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:56,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-09 09:35:56,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:57,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-09 09:36:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:04,855 INFO L354 Elim1Store]: treesize reduction 1396, result has 6.1 percent of original size [2021-11-09 09:36:04,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 63 case distinctions, treesize of input 209 treesize of output 150 [2021-11-09 09:36:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 52 proven. 292 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-09 09:36:06,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479514492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:36:06,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:36:06,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 56] total 67 [2021-11-09 09:36:06,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430141069] [2021-11-09 09:36:06,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-09 09:36:06,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-09 09:36:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=4117, Unknown=0, NotChecked=0, Total=4422 [2021-11-09 09:36:06,677 INFO L87 Difference]: Start difference. First operand 176 states and 210 transitions. Second operand has 67 states, 67 states have (on average 1.7462686567164178) internal successors, (117), 67 states have internal predecessors, (117), 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) [2021-11-09 09:36:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:17,828 INFO L93 Difference]: Finished difference Result 544 states and 654 transitions. [2021-11-09 09:36:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-09 09:36:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7462686567164178) internal successors, (117), 67 states have internal predecessors, (117), 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 175 [2021-11-09 09:36:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:17,835 INFO L225 Difference]: With dead ends: 544 [2021-11-09 09:36:17,835 INFO L226 Difference]: Without dead ends: 441 [2021-11-09 09:36:17,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=511, Invalid=7321, Unknown=0, NotChecked=0, Total=7832 [2021-11-09 09:36:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-09 09:36:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 219. [2021-11-09 09:36:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.2064220183486238) internal successors, (263), 218 states have internal predecessors, (263), 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) [2021-11-09 09:36:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 263 transitions. [2021-11-09 09:36:17,861 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 263 transitions. Word has length 175 [2021-11-09 09:36:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:17,862 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 263 transitions. [2021-11-09 09:36:17,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7462686567164178) internal successors, (117), 67 states have internal predecessors, (117), 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) [2021-11-09 09:36:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 263 transitions. [2021-11-09 09:36:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:36:17,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:17,864 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:17,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-09 09:36:18,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-09 09:36:18,081 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:36:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1929931179, now seen corresponding path program 1 times [2021-11-09 09:36:18,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:18,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959675797] [2021-11-09 09:36:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:18,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 58 proven. 549 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-09 09:36:23,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:23,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959675797] [2021-11-09 09:36:23,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959675797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:36:23,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059341886] [2021-11-09 09:36:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:23,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:36:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:36:23,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:36:23,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 09:36:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:24,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 155 conjunts are in the unsatisfiable core [2021-11-09 09:36:24,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:36:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:25,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2021-11-09 09:36:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:32,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:36:32,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 120 treesize of output 124 [2021-11-09 09:36:33,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:33,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:33,561 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:36:33,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 124 treesize of output 114 [2021-11-09 09:36:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:34,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,095 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:34,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 129 treesize of output 122 [2021-11-09 09:36:34,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:34,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:34,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:34,668 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:34,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 128 treesize of output 130 [2021-11-09 09:36:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:35,243 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:35,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 121 [2021-11-09 09:36:35,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:35,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:35,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:35,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:35,870 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:35,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 132 [2021-11-09 09:36:36,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:36,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:36,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:36,585 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:36,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 138 treesize of output 125 [2021-11-09 09:36:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:37,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,198 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:37,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 140 treesize of output 125 [2021-11-09 09:36:37,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:37,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:36:37,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:37,862 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:36:37,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 133 treesize of output 120 [2021-11-09 09:36:38,239 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:36:38,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 91 [2021-11-09 09:36:42,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:36:42,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 103 treesize of output 31 [2021-11-09 09:36:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 28 proven. 532 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-09 09:36:42,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059341886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:36:42,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:36:42,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 79] total 142 [2021-11-09 09:36:42,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016950588] [2021-11-09 09:36:42,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2021-11-09 09:36:42,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2021-11-09 09:36:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=19401, Unknown=0, NotChecked=0, Total=20022 [2021-11-09 09:36:42,513 INFO L87 Difference]: Start difference. First operand 219 states and 263 transitions. Second operand has 142 states, 142 states have (on average 1.7253521126760563) internal successors, (245), 142 states have internal predecessors, (245), 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) [2021-11-09 09:38:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:18,380 INFO L93 Difference]: Finished difference Result 1321 states and 1588 transitions. [2021-11-09 09:38:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 444 states. [2021-11-09 09:38:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 1.7253521126760563) internal successors, (245), 142 states have internal predecessors, (245), 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 175 [2021-11-09 09:38:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:18,392 INFO L225 Difference]: With dead ends: 1321 [2021-11-09 09:38:18,392 INFO L226 Difference]: Without dead ends: 1312 [2021-11-09 09:38:18,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 109 SyntacticMatches, 9 SemanticMatches, 571 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121958 ImplicationChecksByTransitivity, 93.7s TimeCoverageRelationStatistics Valid=13052, Invalid=314704, Unknown=0, NotChecked=0, Total=327756 [2021-11-09 09:38:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-09 09:38:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 611. [2021-11-09 09:38:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.219672131147541) internal successors, (744), 610 states have internal predecessors, (744), 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) [2021-11-09 09:38:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 744 transitions. [2021-11-09 09:38:18,508 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 744 transitions. Word has length 175 [2021-11-09 09:38:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:18,508 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 744 transitions. [2021-11-09 09:38:18,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 1.7253521126760563) internal successors, (245), 142 states have internal predecessors, (245), 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) [2021-11-09 09:38:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 744 transitions. [2021-11-09 09:38:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:38:18,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:18,512 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:18,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-09 09:38:18,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 09:38:18,733 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:38:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1555689491, now seen corresponding path program 1 times [2021-11-09 09:38:18,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:18,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251139220] [2021-11-09 09:38:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:18,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:38:31,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:31,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251139220] [2021-11-09 09:38:31,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251139220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:38:31,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650919473] [2021-11-09 09:38:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:31,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:38:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:38:31,465 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:38:31,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 09:38:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:33,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 228 conjunts are in the unsatisfiable core [2021-11-09 09:38:33,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:38:33,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-09 09:38:33,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:33,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-11-09 09:38:33,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:33,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-11-09 09:38:33,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:33,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:33,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:33,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:33,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:34,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:34,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:34,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-09 09:38:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:34,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-09 09:38:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:47,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 127 [2021-11-09 09:38:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:57,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:38:57,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 181 treesize of output 143 [2021-11-09 09:38:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:58,341 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:38:58,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 143 [2021-11-09 09:38:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:59,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:59,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:38:59,401 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:38:59,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 190 treesize of output 151 [2021-11-09 09:39:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:00,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:00,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:00,483 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:39:00,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 185 treesize of output 145 [2021-11-09 09:39:01,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:01,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:01,583 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:39:01,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 185 treesize of output 145 [2021-11-09 09:39:02,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:02,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:02,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:02,654 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:39:02,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 185 treesize of output 145 [2021-11-09 09:39:03,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:03,877 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:39:03,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 185 treesize of output 145 [2021-11-09 09:39:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:04,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:39:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:04,900 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:39:04,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 187 treesize of output 148 [2021-11-09 09:39:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:39:05,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:39:05,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 180 treesize of output 122 [2021-11-09 09:39:06,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:39:06,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 132 treesize of output 104 [2021-11-09 09:39:11,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:39:11,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 117 treesize of output 41 [2021-11-09 09:39:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:39:13,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650919473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:39:13,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:39:13,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 99] total 193 [2021-11-09 09:39:13,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703252464] [2021-11-09 09:39:13,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2021-11-09 09:39:13,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2021-11-09 09:39:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=36330, Unknown=0, NotChecked=0, Total=37056 [2021-11-09 09:39:13,431 INFO L87 Difference]: Start difference. First operand 611 states and 744 transitions. Second operand has 193 states, 193 states have (on average 1.7875647668393781) internal successors, (345), 193 states have internal predecessors, (345), 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) [2021-11-09 09:40:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:10,903 INFO L93 Difference]: Finished difference Result 1281 states and 1549 transitions. [2021-11-09 09:40:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-11-09 09:40:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.7875647668393781) internal successors, (345), 193 states have internal predecessors, (345), 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 175 [2021-11-09 09:40:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:10,910 INFO L225 Difference]: With dead ends: 1281 [2021-11-09 09:40:10,910 INFO L226 Difference]: Without dead ends: 1103 [2021-11-09 09:40:10,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 82 SyntacticMatches, 8 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40443 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=2643, Invalid=117419, Unknown=0, NotChecked=0, Total=120062 [2021-11-09 09:40:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2021-11-09 09:40:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 784. [2021-11-09 09:40:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2209450830140485) internal successors, (956), 783 states have internal predecessors, (956), 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) [2021-11-09 09:40:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 956 transitions. [2021-11-09 09:40:11,012 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 956 transitions. Word has length 175 [2021-11-09 09:40:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:11,013 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 956 transitions. [2021-11-09 09:40:11,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.7875647668393781) internal successors, (345), 193 states have internal predecessors, (345), 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) [2021-11-09 09:40:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 956 transitions. [2021-11-09 09:40:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:40:11,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:11,017 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:11,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-09 09:40:11,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:40:11,233 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:40:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1813854929, now seen corresponding path program 2 times [2021-11-09 09:40:11,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:11,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399101864] [2021-11-09 09:40:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:11,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 499 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-09 09:40:14,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:14,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399101864] [2021-11-09 09:40:14,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399101864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:40:14,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355216656] [2021-11-09 09:40:14,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:40:14,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:40:14,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:40:14,823 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:40:14,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 09:40:16,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:40:16,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:40:16,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 115 conjunts are in the unsatisfiable core [2021-11-09 09:40:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:40:17,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:40:17,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:40:18,790 INFO L354 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2021-11-09 09:40:18,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 38 [2021-11-09 09:40:19,062 INFO L354 Elim1Store]: treesize reduction 141, result has 18.0 percent of original size [2021-11-09 09:40:19,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 45 [2021-11-09 09:40:19,356 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:40:19,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:40:19,593 INFO L354 Elim1Store]: treesize reduction 300, result has 11.8 percent of original size [2021-11-09 09:40:19,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 57 [2021-11-09 09:40:19,829 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:40:19,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:40:20,075 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:40:20,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:40:20,338 INFO L354 Elim1Store]: treesize reduction 300, result has 11.8 percent of original size [2021-11-09 09:40:20,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 57 [2021-11-09 09:40:20,600 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:40:20,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:40:20,873 INFO L354 Elim1Store]: treesize reduction 300, result has 11.8 percent of original size [2021-11-09 09:40:20,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 57 [2021-11-09 09:40:21,107 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-09 09:40:21,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 34 [2021-11-09 09:40:21,233 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-09 09:40:21,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 34 [2021-11-09 09:40:22,431 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:40:22,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2021-11-09 09:40:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 499 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-09 09:40:22,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355216656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:40:22,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:40:22,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 56] total 107 [2021-11-09 09:40:22,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513965911] [2021-11-09 09:40:22,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-09 09:40:22,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-09 09:40:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=11012, Unknown=0, NotChecked=0, Total=11342 [2021-11-09 09:40:22,541 INFO L87 Difference]: Start difference. First operand 784 states and 956 transitions. Second operand has 107 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 107 states have internal predecessors, (265), 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) [2021-11-09 09:40:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:40,385 INFO L93 Difference]: Finished difference Result 1492 states and 1785 transitions. [2021-11-09 09:40:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-09 09:40:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 107 states have internal predecessors, (265), 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 175 [2021-11-09 09:40:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:40,394 INFO L225 Difference]: With dead ends: 1492 [2021-11-09 09:40:40,394 INFO L226 Difference]: Without dead ends: 1296 [2021-11-09 09:40:40,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 125 SyntacticMatches, 7 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11267 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1595, Invalid=43561, Unknown=0, NotChecked=0, Total=45156 [2021-11-09 09:40:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-11-09 09:40:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1072. [2021-11-09 09:40:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.219421101774043) internal successors, (1306), 1071 states have internal predecessors, (1306), 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) [2021-11-09 09:40:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1306 transitions. [2021-11-09 09:40:40,527 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1306 transitions. Word has length 175 [2021-11-09 09:40:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:40,528 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1306 transitions. [2021-11-09 09:40:40,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.4766355140186915) internal successors, (265), 107 states have internal predecessors, (265), 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) [2021-11-09 09:40:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1306 transitions. [2021-11-09 09:40:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:40:40,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:40,533 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:40:40,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 09:40:40,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:40:40,761 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:40:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash 792786575, now seen corresponding path program 3 times [2021-11-09 09:40:40,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:40,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197377756] [2021-11-09 09:40:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:40,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 498 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-09 09:40:44,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:44,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197377756] [2021-11-09 09:40:44,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197377756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:40:44,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589905156] [2021-11-09 09:40:44,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:40:44,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:40:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:40:44,223 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:40:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 09:40:47,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-09 09:40:47,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:40:47,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-09 09:40:47,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:40:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:40:47,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2021-11-09 09:40:49,387 INFO L354 Elim1Store]: treesize reduction 258, result has 15.7 percent of original size [2021-11-09 09:40:49,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 71 [2021-11-09 09:40:49,842 INFO L354 Elim1Store]: treesize reduction 478, result has 14.5 percent of original size [2021-11-09 09:40:49,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 115 [2021-11-09 09:40:50,566 INFO L354 Elim1Store]: treesize reduction 478, result has 14.5 percent of original size [2021-11-09 09:40:50,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 115 [2021-11-09 09:40:51,085 INFO L354 Elim1Store]: treesize reduction 478, result has 14.5 percent of original size [2021-11-09 09:40:51,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 115 [2021-11-09 09:40:51,813 INFO L354 Elim1Store]: treesize reduction 478, result has 14.5 percent of original size [2021-11-09 09:40:51,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 115 [2021-11-09 09:40:57,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~2] [2021-11-09 09:40:57,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:40:57,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2021-11-09 09:40:57,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402092864] [2021-11-09 09:40:57,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-09 09:40:57,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-09 09:40:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=6011, Unknown=2, NotChecked=0, Total=6320 [2021-11-09 09:40:57,179 INFO L87 Difference]: Start difference. First operand 1072 states and 1306 transitions. Second operand has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 56 states have internal predecessors, (137), 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) [2021-11-09 09:41:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:08,546 INFO L93 Difference]: Finished difference Result 1737 states and 2092 transitions. [2021-11-09 09:41:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-09 09:41:08,548 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 56 states have internal predecessors, (137), 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 175 [2021-11-09 09:41:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:08,557 INFO L225 Difference]: With dead ends: 1737 [2021-11-09 09:41:08,557 INFO L226 Difference]: Without dead ends: 1537 [2021-11-09 09:41:08,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 101 SyntacticMatches, 7 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5061 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=915, Invalid=19388, Unknown=3, NotChecked=0, Total=20306 [2021-11-09 09:41:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-11-09 09:41:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1374. [2021-11-09 09:41:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 1.2214129643117262) internal successors, (1677), 1373 states have internal predecessors, (1677), 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) [2021-11-09 09:41:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1677 transitions. [2021-11-09 09:41:08,755 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1677 transitions. Word has length 175 [2021-11-09 09:41:08,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:08,755 INFO L470 AbstractCegarLoop]: Abstraction has 1374 states and 1677 transitions. [2021-11-09 09:41:08,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 56 states have internal predecessors, (137), 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) [2021-11-09 09:41:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1677 transitions. [2021-11-09 09:41:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:41:08,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:08,760 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:08,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 09:41:08,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 09:41:08,974 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:41:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash -24861875, now seen corresponding path program 4 times [2021-11-09 09:41:08,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:08,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565163273] [2021-11-09 09:41:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:08,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 499 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-09 09:41:13,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:13,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565163273] [2021-11-09 09:41:13,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565163273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:41:13,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348661217] [2021-11-09 09:41:13,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:41:13,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:41:13,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:41:13,227 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:41:13,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 09:41:15,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:41:15,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:41:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-09 09:41:15,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:41:16,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:41:17,725 INFO L354 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2021-11-09 09:41:17,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 38 [2021-11-09 09:41:17,998 INFO L354 Elim1Store]: treesize reduction 141, result has 18.0 percent of original size [2021-11-09 09:41:17,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 45 [2021-11-09 09:41:18,251 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:41:18,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:41:18,522 INFO L354 Elim1Store]: treesize reduction 300, result has 11.8 percent of original size [2021-11-09 09:41:18,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 57 [2021-11-09 09:41:18,794 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:41:18,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:41:19,076 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:41:19,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:41:19,422 INFO L354 Elim1Store]: treesize reduction 309, result has 9.1 percent of original size [2021-11-09 09:41:19,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 48 [2021-11-09 09:41:19,695 INFO L354 Elim1Store]: treesize reduction 243, result has 10.3 percent of original size [2021-11-09 09:41:19,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 45 [2021-11-09 09:41:19,954 INFO L354 Elim1Store]: treesize reduction 222, result has 14.3 percent of original size [2021-11-09 09:41:19,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 65 treesize of output 54 [2021-11-09 09:41:20,228 INFO L354 Elim1Store]: treesize reduction 332, result has 12.9 percent of original size [2021-11-09 09:41:20,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 66 treesize of output 66 [2021-11-09 09:41:20,616 INFO L354 Elim1Store]: treesize reduction 150, result has 15.7 percent of original size [2021-11-09 09:41:20,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 43 [2021-11-09 09:41:21,849 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-09 09:41:21,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2021-11-09 09:41:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 97 proven. 433 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-11-09 09:41:21,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348661217] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:41:21,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:41:21,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 55] total 114 [2021-11-09 09:41:21,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130334309] [2021-11-09 09:41:21,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-09 09:41:21,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-09 09:41:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=12440, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 09:41:21,983 INFO L87 Difference]: Start difference. First operand 1374 states and 1677 transitions. Second operand has 114 states, 114 states have (on average 2.2017543859649122) internal successors, (251), 114 states have internal predecessors, (251), 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) [2021-11-09 09:41:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:50,077 INFO L93 Difference]: Finished difference Result 3096 states and 3690 transitions. [2021-11-09 09:41:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2021-11-09 09:41:50,078 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.2017543859649122) internal successors, (251), 114 states have internal predecessors, (251), 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 175 [2021-11-09 09:41:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:50,091 INFO L225 Difference]: With dead ends: 3096 [2021-11-09 09:41:50,091 INFO L226 Difference]: Without dead ends: 2802 [2021-11-09 09:41:50,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 128 SyntacticMatches, 7 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25097 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=2997, Invalid=88509, Unknown=0, NotChecked=0, Total=91506 [2021-11-09 09:41:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-11-09 09:41:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2190. [2021-11-09 09:41:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2189 states have (on average 1.219278209227958) internal successors, (2669), 2189 states have internal predecessors, (2669), 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) [2021-11-09 09:41:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 2669 transitions. [2021-11-09 09:41:50,409 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 2669 transitions. Word has length 175 [2021-11-09 09:41:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:50,410 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 2669 transitions. [2021-11-09 09:41:50,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.2017543859649122) internal successors, (251), 114 states have internal predecessors, (251), 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) [2021-11-09 09:41:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 2669 transitions. [2021-11-09 09:41:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:41:50,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:50,418 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:50,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-09 09:41:50,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 09:41:50,637 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:41:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -158875381, now seen corresponding path program 5 times [2021-11-09 09:41:50,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:50,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761934569] [2021-11-09 09:41:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:50,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 656 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 09:41:55,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:55,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761934569] [2021-11-09 09:41:55,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761934569] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:41:55,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316562964] [2021-11-09 09:41:55,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:41:55,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:41:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:41:55,846 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:41:55,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 09:41:59,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-09 09:41:59,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:41:59,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-09 09:41:59,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:41:59,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:41:59,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:41:59,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:41:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:41:59,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-09 09:41:59,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:41:59,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2021-11-09 09:42:03,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:03,322 INFO L354 Elim1Store]: treesize reduction 344, result has 22.7 percent of original size [2021-11-09 09:42:03,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 103 treesize of output 142 [2021-11-09 09:42:05,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:05,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:05,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:05,500 INFO L354 Elim1Store]: treesize reduction 432, result has 28.2 percent of original size [2021-11-09 09:42:05,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 365 treesize of output 318 [2021-11-09 09:42:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:09,478 INFO L354 Elim1Store]: treesize reduction 513, result has 24.9 percent of original size [2021-11-09 09:42:09,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 508 treesize of output 372 [2021-11-09 09:42:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:15,323 INFO L354 Elim1Store]: treesize reduction 594, result has 22.3 percent of original size [2021-11-09 09:42:15,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 50 case distinctions, treesize of input 649 treesize of output 424 [2021-11-09 09:42:22,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:23,016 INFO L354 Elim1Store]: treesize reduction 675, result has 20.1 percent of original size [2021-11-09 09:42:23,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 60 case distinctions, treesize of input 776 treesize of output 491 [2021-11-09 09:42:32,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:32,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:33,333 INFO L354 Elim1Store]: treesize reduction 741, result has 18.7 percent of original size [2021-11-09 09:42:33,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 22 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 71 case distinctions, treesize of input 896 treesize of output 534 [2021-11-09 09:42:44,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:45,336 INFO L354 Elim1Store]: treesize reduction 794, result has 15.4 percent of original size [2021-11-09 09:42:45,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 30 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 82 case distinctions, treesize of input 888 treesize of output 528 [2021-11-09 09:42:53,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:42:54,022 INFO L354 Elim1Store]: treesize reduction 886, result has 11.8 percent of original size [2021-11-09 09:42:54,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 39 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 95 case distinctions, treesize of input 971 treesize of output 542 [2021-11-09 09:43:02,684 INFO L354 Elim1Store]: treesize reduction 2312, result has 4.8 percent of original size [2021-11-09 09:43:02,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 119 case distinctions, treesize of input 1002 treesize of output 459 [2021-11-09 09:43:03,450 INFO L354 Elim1Store]: treesize reduction 353, result has 11.3 percent of original size [2021-11-09 09:43:03,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 101 treesize of output 80 [2021-11-09 09:43:08,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:08,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:08,171 INFO L354 Elim1Store]: treesize reduction 196, result has 29.2 percent of original size [2021-11-09 09:43:08,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 105 [2021-11-09 09:43:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 136 proven. 425 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-09 09:43:09,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316562964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:09,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:43:09,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 71] total 120 [2021-11-09 09:43:09,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70414983] [2021-11-09 09:43:09,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-09 09:43:09,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-09 09:43:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=13809, Unknown=0, NotChecked=0, Total=14280 [2021-11-09 09:43:09,798 INFO L87 Difference]: Start difference. First operand 2190 states and 2669 transitions. Second operand has 120 states, 120 states have (on average 2.025) internal successors, (243), 120 states have internal predecessors, (243), 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) [2021-11-09 09:44:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:44:14,333 INFO L93 Difference]: Finished difference Result 3928 states and 4750 transitions. [2021-11-09 09:44:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-11-09 09:44:14,334 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.025) internal successors, (243), 120 states have internal predecessors, (243), 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 175 [2021-11-09 09:44:14,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:44:14,348 INFO L225 Difference]: With dead ends: 3928 [2021-11-09 09:44:14,348 INFO L226 Difference]: Without dead ends: 2759 [2021-11-09 09:44:14,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 124 SyntacticMatches, 15 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17783 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=2527, Invalid=60725, Unknown=0, NotChecked=0, Total=63252 [2021-11-09 09:44:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-11-09 09:44:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2553. [2021-11-09 09:44:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 1.207680250783699) internal successors, (3082), 2552 states have internal predecessors, (3082), 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) [2021-11-09 09:44:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3082 transitions. [2021-11-09 09:44:14,634 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3082 transitions. Word has length 175 [2021-11-09 09:44:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:44:14,634 INFO L470 AbstractCegarLoop]: Abstraction has 2553 states and 3082 transitions. [2021-11-09 09:44:14,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.025) internal successors, (243), 120 states have internal predecessors, (243), 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) [2021-11-09 09:44:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3082 transitions. [2021-11-09 09:44:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:44:14,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:44:14,644 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:44:14,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 09:44:14,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 09:44:14,857 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:44:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:44:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash -668348471, now seen corresponding path program 6 times [2021-11-09 09:44:14,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:44:14,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198326769] [2021-11-09 09:44:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:44:14,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:44:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:44:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 689 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:44:21,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:44:21,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198326769] [2021-11-09 09:44:21,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198326769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:44:21,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317956645] [2021-11-09 09:44:21,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:44:21,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:44:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:44:21,989 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:44:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 09:44:26,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-09 09:44:26,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:44:26,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-09 09:44:26,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:44:27,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:44:28,495 INFO L354 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2021-11-09 09:44:28,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 38 [2021-11-09 09:44:29,267 INFO L354 Elim1Store]: treesize reduction 141, result has 18.0 percent of original size [2021-11-09 09:44:29,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 45 [2021-11-09 09:44:29,551 INFO L354 Elim1Store]: treesize reduction 290, result has 12.9 percent of original size [2021-11-09 09:44:29,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 60 treesize of output 60 [2021-11-09 09:44:29,875 INFO L354 Elim1Store]: treesize reduction 300, result has 11.8 percent of original size [2021-11-09 09:44:29,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 57 [2021-11-09 09:44:30,193 INFO L354 Elim1Store]: treesize reduction 306, result has 10.0 percent of original size [2021-11-09 09:44:30,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 51 [2021-11-09 09:44:30,504 INFO L354 Elim1Store]: treesize reduction 225, result has 10.0 percent of original size [2021-11-09 09:44:30,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 42 [2021-11-09 09:44:30,812 INFO L354 Elim1Store]: treesize reduction 204, result has 18.4 percent of original size [2021-11-09 09:44:30,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 63 [2021-11-09 09:44:31,313 INFO L354 Elim1Store]: treesize reduction 414, result has 15.0 percent of original size [2021-11-09 09:44:31,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 107 [2021-11-09 09:44:39,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~2] [2021-11-09 09:44:39,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:44:39,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2021-11-09 09:44:39,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302459220] [2021-11-09 09:44:39,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-09 09:44:39,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:44:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-09 09:44:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=12732, Unknown=4, NotChecked=0, Total=13110 [2021-11-09 09:44:39,993 INFO L87 Difference]: Start difference. First operand 2553 states and 3082 transitions. Second operand has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 81 states have internal predecessors, (173), 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) [2021-11-09 09:45:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:04,125 INFO L93 Difference]: Finished difference Result 4329 states and 5156 transitions. [2021-11-09 09:45:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-09 09:45:04,126 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 81 states have internal predecessors, (173), 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 175 [2021-11-09 09:45:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:04,145 INFO L225 Difference]: With dead ends: 4329 [2021-11-09 09:45:04,145 INFO L226 Difference]: Without dead ends: 4093 [2021-11-09 09:45:04,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 101 SyntacticMatches, 8 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18590 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=1996, Invalid=62262, Unknown=4, NotChecked=0, Total=64262 [2021-11-09 09:45:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-11-09 09:45:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3487. [2021-11-09 09:45:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3487 states, 3486 states have (on average 1.210556511761331) internal successors, (4220), 3486 states have internal predecessors, (4220), 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) [2021-11-09 09:45:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 4220 transitions. [2021-11-09 09:45:04,536 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 4220 transitions. Word has length 175 [2021-11-09 09:45:04,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:04,537 INFO L470 AbstractCegarLoop]: Abstraction has 3487 states and 4220 transitions. [2021-11-09 09:45:04,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 81 states have internal predecessors, (173), 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) [2021-11-09 09:45:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 4220 transitions. [2021-11-09 09:45:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:45:04,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:04,546 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:04,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 09:45:04,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 09:45:04,765 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:45:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash -393588857, now seen corresponding path program 7 times [2021-11-09 09:45:04,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:04,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085648010] [2021-11-09 09:45:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:04,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 689 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:45:12,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:12,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085648010] [2021-11-09 09:45:12,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085648010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:45:12,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313730777] [2021-11-09 09:45:12,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:45:12,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:45:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:45:12,093 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:45:12,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 09:45:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:15,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 155 conjunts are in the unsatisfiable core [2021-11-09 09:45:15,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:45:15,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:45:15,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:45:16,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:45:16,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2021-11-09 09:45:21,432 INFO L354 Elim1Store]: treesize reduction 606, result has 11.1 percent of original size [2021-11-09 09:45:21,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 105 [2021-11-09 09:45:22,186 INFO L354 Elim1Store]: treesize reduction 861, result has 8.8 percent of original size [2021-11-09 09:45:22,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 128 treesize of output 115 [2021-11-09 09:45:23,002 INFO L354 Elim1Store]: treesize reduction 909, result has 8.0 percent of original size [2021-11-09 09:45:23,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 135 treesize of output 111 [2021-11-09 09:45:23,727 INFO L354 Elim1Store]: treesize reduction 750, result has 8.5 percent of original size [2021-11-09 09:45:23,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 130 treesize of output 102 [2021-11-09 09:45:24,420 INFO L354 Elim1Store]: treesize reduction 753, result has 8.2 percent of original size [2021-11-09 09:45:24,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 130 treesize of output 99 [2021-11-09 09:45:25,147 INFO L354 Elim1Store]: treesize reduction 783, result has 8.5 percent of original size [2021-11-09 09:45:25,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 133 treesize of output 105 [2021-11-09 09:45:25,851 INFO L354 Elim1Store]: treesize reduction 753, result has 8.2 percent of original size [2021-11-09 09:45:25,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 130 treesize of output 99 [2021-11-09 09:45:26,638 INFO L354 Elim1Store]: treesize reduction 786, result has 8.2 percent of original size [2021-11-09 09:45:26,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 139 treesize of output 102 [2021-11-09 09:45:27,421 INFO L354 Elim1Store]: treesize reduction 518, result has 11.0 percent of original size [2021-11-09 09:45:27,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 125 treesize of output 94 [2021-11-09 09:45:27,912 INFO L354 Elim1Store]: treesize reduction 518, result has 11.0 percent of original size [2021-11-09 09:45:27,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 119 treesize of output 94 [2021-11-09 09:45:33,252 INFO L354 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2021-11-09 09:45:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 25 [2021-11-09 09:45:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 499 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-09 09:45:33,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313730777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:45:33,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:45:33,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 76] total 157 [2021-11-09 09:45:33,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044846294] [2021-11-09 09:45:33,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2021-11-09 09:45:33,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2021-11-09 09:45:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=23989, Unknown=0, NotChecked=0, Total=24492 [2021-11-09 09:45:33,480 INFO L87 Difference]: Start difference. First operand 3487 states and 4220 transitions. Second operand has 157 states, 157 states have (on average 1.910828025477707) internal successors, (300), 157 states have internal predecessors, (300), 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) [2021-11-09 09:46:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:46:31,149 INFO L93 Difference]: Finished difference Result 4860 states and 5807 transitions. [2021-11-09 09:46:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-11-09 09:46:31,150 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 1.910828025477707) internal successors, (300), 157 states have internal predecessors, (300), 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 175 [2021-11-09 09:46:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:46:31,176 INFO L225 Difference]: With dead ends: 4860 [2021-11-09 09:46:31,176 INFO L226 Difference]: Without dead ends: 4595 [2021-11-09 09:46:31,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 133 SyntacticMatches, 7 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25270 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=2535, Invalid=90185, Unknown=0, NotChecked=0, Total=92720 [2021-11-09 09:46:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2021-11-09 09:46:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4121. [2021-11-09 09:46:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 4120 states have (on average 1.2109223300970873) internal successors, (4989), 4120 states have internal predecessors, (4989), 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) [2021-11-09 09:46:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 4989 transitions. [2021-11-09 09:46:31,701 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 4989 transitions. Word has length 175 [2021-11-09 09:46:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:46:31,702 INFO L470 AbstractCegarLoop]: Abstraction has 4121 states and 4989 transitions. [2021-11-09 09:46:31,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 1.910828025477707) internal successors, (300), 157 states have internal predecessors, (300), 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) [2021-11-09 09:46:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 4989 transitions. [2021-11-09 09:46:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:46:31,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:46:31,709 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:46:31,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 09:46:31,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:46:31,910 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:46:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:46:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash -787955643, now seen corresponding path program 8 times [2021-11-09 09:46:31,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:46:31,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557112355] [2021-11-09 09:46:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:46:31,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:46:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:46:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 689 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:46:40,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:46:40,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557112355] [2021-11-09 09:46:40,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557112355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:46:40,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804916666] [2021-11-09 09:46:40,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:46:40,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:46:40,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:46:40,910 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:46:40,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24a4dee6-3449-4aa0-979d-be25c54fb6f3/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 09:46:44,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:46:44,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:46:44,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-09 09:46:44,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:46:44,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:46:44,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-09 09:46:52,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:52,185 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:46:52,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 128 treesize of output 110 [2021-11-09 09:46:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:46:54,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 130 treesize of output 117 [2021-11-09 09:46:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:54,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:54,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,007 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:46:55,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 150 treesize of output 132 [2021-11-09 09:46:55,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:55,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:55,711 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:46:55,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 145 treesize of output 129 [2021-11-09 09:46:56,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:56,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:56,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:56,453 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:46:56,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 150 treesize of output 135 [2021-11-09 09:46:57,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:57,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:57,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,212 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:46:57,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 156 treesize of output 138 [2021-11-09 09:46:57,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:57,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:57,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:57,979 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:46:57,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 138 [2021-11-09 09:46:58,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:58,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:58,695 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-09 09:46:58,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 145 treesize of output 129 [2021-11-09 09:46:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:59,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:46:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:46:59,446 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-11-09 09:46:59,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 36 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 150 treesize of output 135 [2021-11-09 09:47:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:47:00,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:47:00,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 140 treesize of output 106 [2021-11-09 09:47:00,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:47:00,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 100 treesize of output 88 [2021-11-09 09:47:06,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:47:06,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 28 [2021-11-09 09:47:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 59 proven. 499 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-09 09:47:06,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804916666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:47:06,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:47:06,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 81] total 150 [2021-11-09 09:47:06,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530815246] [2021-11-09 09:47:06,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2021-11-09 09:47:06,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2021-11-09 09:47:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=21815, Unknown=0, NotChecked=0, Total=22350 [2021-11-09 09:47:06,520 INFO L87 Difference]: Start difference. First operand 4121 states and 4989 transitions. Second operand has 150 states, 150 states have (on average 1.8066666666666666) internal successors, (271), 150 states have internal predecessors, (271), 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)