./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 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G --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-7e70bad [2021-11-23 13:26:04,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:26:04,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:26:04,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:26:04,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:26:04,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:26:04,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:26:04,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:26:04,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:26:04,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:26:04,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:26:04,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:26:04,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:26:04,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:26:04,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:26:04,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:26:04,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:26:04,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:26:04,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:26:04,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:26:04,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:26:04,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:26:04,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:26:04,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:26:04,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:26:04,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:26:04,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:26:04,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:26:04,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:26:04,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:26:04,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:26:04,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:26:04,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:26:04,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:26:04,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:26:04,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:26:04,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:26:04,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:26:04,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:26:04,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:26:04,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:26:04,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:26:04,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:26:04,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:26:04,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:26:04,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:26:04,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:26:04,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:26:04,460 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:26:04,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:26:04,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:26:04,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:26:04,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:26:04,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:26:04,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:26:04,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:26:04,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:26:04,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:26:04,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:26:04,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:26:04,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:26:04,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:26:04,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:26:04,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:26:04,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:26:04,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:26:04,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:26:04,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:26:04,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:26:04,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:26:04,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:26:04,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:26:04,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:26:04,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:26:04,469 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_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2021-11-23 13:26:04,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:26:04,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:26:04,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:26:04,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:26:04,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:26:04,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 13:26:04,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/data/501782626/21e17df685fb49158ac90869702b1f79/FLAG2098e135b [2021-11-23 13:26:05,464 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:26:05,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 13:26:05,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/data/501782626/21e17df685fb49158ac90869702b1f79/FLAG2098e135b [2021-11-23 13:26:05,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/data/501782626/21e17df685fb49158ac90869702b1f79 [2021-11-23 13:26:05,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:26:05,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:26:05,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:26:05,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:26:05,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:26:05,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:26:05" (1/1) ... [2021-11-23 13:26:05,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d8f487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:05, skipping insertion in model container [2021-11-23 13:26:05,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:26:05" (1/1) ... [2021-11-23 13:26:05,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:26:05,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:26:06,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 13:26:06,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:26:06,121 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:26:06,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 13:26:06,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:26:06,187 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:26:06,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06 WrapperNode [2021-11-23 13:26:06,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:26:06,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:26:06,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:26:06,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:26:06,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,240 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 136 [2021-11-23 13:26:06,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:26:06,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:26:06,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:26:06,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:26:06,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:26:06,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:26:06,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:26:06,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:26:06,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (1/1) ... [2021-11-23 13:26:06,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:26:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:06,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:26:06,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:26:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:26:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:26:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:26:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:26:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:26:06,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:26:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:26:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:26:06,540 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:26:06,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:26:06,771 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:26:06,791 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:26:06,792 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:26:06,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:26:06 BoogieIcfgContainer [2021-11-23 13:26:06,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:26:06,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:26:06,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:26:06,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:26:06,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:26:05" (1/3) ... [2021-11-23 13:26:06,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aac51a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:26:06, skipping insertion in model container [2021-11-23 13:26:06,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:06" (2/3) ... [2021-11-23 13:26:06,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aac51a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:26:06, skipping insertion in model container [2021-11-23 13:26:06,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:26:06" (3/3) ... [2021-11-23 13:26:06,816 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2021-11-23 13:26:06,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:26:06,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:26:06,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:26:06,907 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 [2021-11-23 13:26:06,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:26:06,928 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) [2021-11-23 13:26:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:26:06,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:06,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:06,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1332003061, now seen corresponding path program 1 times [2021-11-23 13:26:06,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:06,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578140838] [2021-11-23 13:26:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:06,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:07,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:07,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578140838] [2021-11-23 13:26:07,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578140838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:07,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:07,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:26:07,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507393683] [2021-11-23 13:26:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:07,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:26:07,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:26:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:26:07,284 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) [2021-11-23 13:26:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:07,319 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2021-11-23 13:26:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:26:07,326 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 [2021-11-23 13:26:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:07,338 INFO L225 Difference]: With dead ends: 64 [2021-11-23 13:26:07,338 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 13:26:07,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:26:07,356 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:07,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 74 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 13:26:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-11-23 13:26:07,391 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) [2021-11-23 13:26:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-11-23 13:26:07,394 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 17 [2021-11-23 13:26:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:07,395 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-11-23 13:26:07,395 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) [2021-11-23 13:26:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-11-23 13:26:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:26:07,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:07,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:07,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:26:07,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash -826131671, now seen corresponding path program 1 times [2021-11-23 13:26:07,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:07,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774445823] [2021-11-23 13:26:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:07,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:07,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774445823] [2021-11-23 13:26:07,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774445823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226945205] [2021-11-23 13:26:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:07,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:07,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:26:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:07,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:26:07,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:26:07,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226945205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:07,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:26:07,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 13:26:07,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602236849] [2021-11-23 13:26:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:07,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:26:07,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:26:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:07,691 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) [2021-11-23 13:26:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:07,745 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2021-11-23 13:26:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:26:07,746 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 [2021-11-23 13:26:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:07,748 INFO L225 Difference]: With dead ends: 62 [2021-11-23 13:26:07,748 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 13:26:07,748 INFO L932 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 [2021-11-23 13:26:07,751 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:07,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 13:26:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-23 13:26:07,759 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) [2021-11-23 13:26:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-23 13:26:07,761 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2021-11-23 13:26:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:07,761 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-23 13:26:07,762 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) [2021-11-23 13:26:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-23 13:26:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 13:26:07,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:07,763 INFO L514 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] [2021-11-23 13:26:07,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 13:26:07,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:07,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1925905852, now seen corresponding path program 1 times [2021-11-23 13:26:07,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:07,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112622171] [2021-11-23 13:26:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:07,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:26:08,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112622171] [2021-11-23 13:26:08,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112622171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714632778] [2021-11-23 13:26:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:08,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:08,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:08,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:26:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:08,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:26:08,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:26:08,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:08,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714632778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:08,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:26:08,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 13:26:08,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490963027] [2021-11-23 13:26:08,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:08,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:26:08,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:26:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:08,229 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) [2021-11-23 13:26:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:08,244 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-23 13:26:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:26:08,245 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 [2021-11-23 13:26:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:08,246 INFO L225 Difference]: With dead ends: 46 [2021-11-23 13:26:08,247 INFO L226 Difference]: Without dead ends: 35 [2021-11-23 13:26:08,247 INFO L932 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 [2021-11-23 13:26:08,249 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:08,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-23 13:26:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-23 13:26:08,256 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) [2021-11-23 13:26:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-23 13:26:08,258 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 31 [2021-11-23 13:26:08,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:08,258 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-23 13:26:08,259 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) [2021-11-23 13:26:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-23 13:26:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 13:26:08,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:08,260 INFO L514 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] [2021-11-23 13:26:08,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:08,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:08,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1542894914, now seen corresponding path program 1 times [2021-11-23 13:26:08,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:08,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838995502] [2021-11-23 13:26:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:08,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:26:08,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838995502] [2021-11-23 13:26:08,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838995502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777219295] [2021-11-23 13:26:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:08,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:08,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:08,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:26:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:08,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:26:08,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:26:08,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:26:08,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777219295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:08,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:08,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:26:08,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415733325] [2021-11-23 13:26:08,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:08,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:26:08,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:26:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:08,986 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-11-23 13:26:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:09,013 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2021-11-23 13:26:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:26:09,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) Word has length 33 [2021-11-23 13:26:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:09,015 INFO L225 Difference]: With dead ends: 69 [2021-11-23 13:26:09,015 INFO L226 Difference]: Without dead ends: 40 [2021-11-23 13:26:09,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:09,018 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:09,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-23 13:26:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-23 13:26:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 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) [2021-11-23 13:26:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-11-23 13:26:09,026 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 33 [2021-11-23 13:26:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:09,027 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-11-23 13:26:09,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-11-23 13:26:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-11-23 13:26:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 13:26:09,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:09,029 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-23 13:26:09,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:09,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:09,248 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1906079620, now seen corresponding path program 2 times [2021-11-23 13:26:09,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166504251] [2021-11-23 13:26:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:09,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:26:09,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166504251] [2021-11-23 13:26:09,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166504251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:09,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315267456] [2021-11-23 13:26:09,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:26:09,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:09,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:09,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:09,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:26:09,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:26:09,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:26:09,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:26:09,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:26:09,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:26:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315267456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:09,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:09,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:26:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165667526] [2021-11-23 13:26:09,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:26:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:26:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:09,676 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-23 13:26:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:09,781 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2021-11-23 13:26:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:26:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 39 [2021-11-23 13:26:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:09,785 INFO L225 Difference]: With dead ends: 99 [2021-11-23 13:26:09,785 INFO L226 Difference]: Without dead ends: 76 [2021-11-23 13:26:09,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:09,787 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:09,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 105 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:26:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-23 13:26:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-23 13:26:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 75 states have internal predecessors, (92), 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) [2021-11-23 13:26:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2021-11-23 13:26:09,801 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 39 [2021-11-23 13:26:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:09,804 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2021-11-23 13:26:09,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-23 13:26:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2021-11-23 13:26:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 13:26:09,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:09,810 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-11-23 13:26:09,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:10,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:10,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 879657165, now seen corresponding path program 3 times [2021-11-23 13:26:10,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:10,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116525425] [2021-11-23 13:26:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:10,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-23 13:26:10,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:10,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116525425] [2021-11-23 13:26:10,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116525425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:10,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734429164] [2021-11-23 13:26:10,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:26:10,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:10,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:10,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:10,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:26:10,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 13:26:10,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:26:10,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:26:10,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-23 13:26:10,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-23 13:26:10,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734429164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:10,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:10,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:26:10,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448519184] [2021-11-23 13:26:10,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:10,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:26:10,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:26:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:10,554 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-11-23 13:26:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:10,603 INFO L93 Difference]: Finished difference Result 105 states and 128 transitions. [2021-11-23 13:26:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:26:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) Word has length 75 [2021-11-23 13:26:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:10,609 INFO L225 Difference]: With dead ends: 105 [2021-11-23 13:26:10,609 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 13:26:10,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:10,614 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:10,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 96 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 13:26:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-23 13:26:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 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) [2021-11-23 13:26:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2021-11-23 13:26:10,629 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 75 [2021-11-23 13:26:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:10,629 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2021-11-23 13:26:10,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 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) [2021-11-23 13:26:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2021-11-23 13:26:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 13:26:10,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:10,632 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-23 13:26:10,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:10,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:26:10,850 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1458842183, now seen corresponding path program 4 times [2021-11-23 13:26:10,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748955075] [2021-11-23 13:26:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:10,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-23 13:26:11,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:11,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748955075] [2021-11-23 13:26:11,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748955075] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:11,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900450400] [2021-11-23 13:26:11,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:26:11,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:11,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:11,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:11,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:26:11,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:26:11,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:26:11,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:26:11,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-23 13:26:11,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-23 13:26:11,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900450400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:11,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:11,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-23 13:26:11,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841111416] [2021-11-23 13:26:11,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:11,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:26:11,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:26:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:26:11,575 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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) [2021-11-23 13:26:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:11,842 INFO L93 Difference]: Finished difference Result 228 states and 296 transitions. [2021-11-23 13:26:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:26:11,843 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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) Word has length 81 [2021-11-23 13:26:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:11,848 INFO L225 Difference]: With dead ends: 228 [2021-11-23 13:26:11,849 INFO L226 Difference]: Without dead ends: 157 [2021-11-23 13:26:11,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:26:11,852 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 179 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:11,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 190 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:26:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-23 13:26:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-11-23 13:26:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 155 states have internal predecessors, (190), 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) [2021-11-23 13:26:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 190 transitions. [2021-11-23 13:26:11,895 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 190 transitions. Word has length 81 [2021-11-23 13:26:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:11,898 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 190 transitions. [2021-11-23 13:26:11,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 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) [2021-11-23 13:26:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 190 transitions. [2021-11-23 13:26:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:26:11,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:11,905 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:11,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:12,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:12,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1601654951, now seen corresponding path program 5 times [2021-11-23 13:26:12,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:12,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937661094] [2021-11-23 13:26:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:12,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-23 13:26:12,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937661094] [2021-11-23 13:26:12,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937661094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:12,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868155867] [2021-11-23 13:26:12,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:26:12,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:12,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:12,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:26:12,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-23 13:26:12,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:26:12,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:26:12,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-23 13:26:12,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2021-11-23 13:26:13,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868155867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:13,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:13,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-11-23 13:26:13,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295839971] [2021-11-23 13:26:13,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:13,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 13:26:13,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 13:26:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:26:13,157 INFO L87 Difference]: Start difference. First operand 156 states and 190 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2021-11-23 13:26:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:13,202 INFO L93 Difference]: Finished difference Result 309 states and 381 transitions. [2021-11-23 13:26:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:26:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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 [2021-11-23 13:26:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:13,204 INFO L225 Difference]: With dead ends: 309 [2021-11-23 13:26:13,204 INFO L226 Difference]: Without dead ends: 166 [2021-11-23 13:26:13,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:26:13,208 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:13,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 162 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-23 13:26:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-23 13:26:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 165 states have internal predecessors, (200), 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) [2021-11-23 13:26:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2021-11-23 13:26:13,222 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 155 [2021-11-23 13:26:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2021-11-23 13:26:13,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2021-11-23 13:26:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2021-11-23 13:26:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 13:26:13,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:13,226 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:13,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:13,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:13,453 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 172885597, now seen corresponding path program 6 times [2021-11-23 13:26:13,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:13,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043412311] [2021-11-23 13:26:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:13,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-23 13:26:13,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:13,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043412311] [2021-11-23 13:26:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043412311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:13,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925755523] [2021-11-23 13:26:13,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 13:26:13,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:13,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:13,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:26:14,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-23 13:26:14,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:26:14,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:26:14,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-23 13:26:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:26:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-23 13:26:14,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925755523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:26:14,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:26:14,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-11-23 13:26:14,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620019721] [2021-11-23 13:26:14,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:26:14,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:26:14,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:26:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:26:14,916 INFO L87 Difference]: Start difference. First operand 166 states and 200 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:14,957 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2021-11-23 13:26:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:26:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-23 13:26:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:14,963 INFO L225 Difference]: With dead ends: 223 [2021-11-23 13:26:14,963 INFO L226 Difference]: Without dead ends: 176 [2021-11-23 13:26:14,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:26:14,968 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:14,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 158 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-23 13:26:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-23 13:26:14,991 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) [2021-11-23 13:26:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2021-11-23 13:26:14,994 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 165 [2021-11-23 13:26:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:14,998 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2021-11-23 13:26:14,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2021-11-23 13:26:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-23 13:26:15,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:15,007 INFO L514 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] [2021-11-23 13:26:15,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:15,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 13:26:15,225 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:26:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash 103462867, now seen corresponding path program 7 times [2021-11-23 13:26:15,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:15,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581612589] [2021-11-23 13:26:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:15,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 52 proven. 130 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-23 13:26:16,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581612589] [2021-11-23 13:26:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581612589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:26:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461146415] [2021-11-23 13:26:16,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 13:26:16,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:16,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:16,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5069a56c-1719-41ef-bcd7-f0245aa288b1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:26:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:17,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 158 conjunts are in the unsatisfiable core [2021-11-23 13:26:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:17,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:17,697 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 [2021-11-23 13:26:23,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:23,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:26:24,165 INFO L354 Elim1Store]: treesize reduction 1135, result has 7.9 percent of original size [2021-11-23 13:26:24,165 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 64 case distinctions, treesize of input 203 treesize of output 164 [2021-11-23 13:26:24,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:24,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:24,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:26:24,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,092 INFO L354 Elim1Store]: treesize reduction 1275, result has 6.0 percent of original size [2021-11-23 13:26:25,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 205 treesize of output 157 [2021-11-23 13:26:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:26:25,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:25,803 INFO L354 Elim1Store]: treesize reduction 961, result has 7.3 percent of original size [2021-11-23 13:26:25,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 62 case distinctions, treesize of input 195 treesize of output 160 [2021-11-23 13:26:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:26,577 INFO L354 Elim1Store]: treesize reduction 1079, result has 5.9 percent of original size [2021-11-23 13:26:26,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 73 case distinctions, treesize of input 197 treesize of output 152 [2021-11-23 13:26:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,444 INFO L354 Elim1Store]: treesize reduction 976, result has 5.5 percent of original size [2021-11-23 13:26:27,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 72 case distinctions, treesize of input 196 treesize of output 153 [2021-11-23 13:26:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:27,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,156 INFO L354 Elim1Store]: treesize reduction 855, result has 5.1 percent of original size [2021-11-23 13:26:28,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 71 case distinctions, treesize of input 198 treesize of output 154 [2021-11-23 13:26:28,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:26:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:28,855 INFO L354 Elim1Store]: treesize reduction 680, result has 3.8 percent of original size [2021-11-23 13:26:28,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 183 treesize of output 147 [2021-11-23 13:26:29,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:29,553 INFO L354 Elim1Store]: treesize reduction 320, result has 6.2 percent of original size [2021-11-23 13:26:29,554 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 57 case distinctions, treesize of input 181 treesize of output 141 [2021-11-23 13:26:30,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:26:30,237 INFO L354 Elim1Store]: treesize reduction 336, result has 3.7 percent of original size [2021-11-23 13:26:30,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 68 case distinctions, treesize of input 170 treesize of output 137 [2021-11-23 13:26:30,695 INFO L354 Elim1Store]: treesize reduction 129, result has 2.3 percent of original size [2021-11-23 13:26:30,696 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 56 case distinctions, treesize of input 126 treesize of output 110 [2021-11-23 13:26:33,804 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:26:33,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 114 treesize of output 34 [2021-11-23 13:26:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 28 proven. 532 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-23 13:26:33,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:27:16,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7538 treesize of output 6446