./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:42:05,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:42:05,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:42:05,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:42:05,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:42:05,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:42:05,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:42:05,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:42:05,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:42:05,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:42:05,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:42:05,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:42:05,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:42:05,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:42:05,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:42:05,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:42:05,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:42:05,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:42:05,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:42:05,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:42:05,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:42:05,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:42:05,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:42:05,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:42:05,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:42:05,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:42:05,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:42:05,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:42:05,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:42:05,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:42:05,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:42:05,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:42:05,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:42:05,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:42:05,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:42:05,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:42:05,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:42:05,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:42:05,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:42:05,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:42:05,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:42:05,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:42:05,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:42:05,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:42:05,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:42:05,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:42:05,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:42:05,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:42:05,481 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:42:05,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:42:05,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:42:05,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:42:05,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:42:05,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:42:05,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:42:05,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:42:05,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:42:05,485 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:42:05,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:42:05,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:42:05,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:42:05,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:42:05,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:42:05,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:42:05,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:05,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:42:05,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:42:05,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:42:05,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:42:05,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:42:05,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:42:05,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:42:05,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:42:05,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:42:05,490 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_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-21 19:42:05,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:42:05,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:42:05,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:42:05,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:42:05,874 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:42:05,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-21 19:42:05,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/data/0d1c218cc/c9833a8cc6994193a75db1b04bfe0b17/FLAGc9287bcdc [2021-10-21 19:42:06,526 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:42:06,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/sv-benchmarks/c/loop-new/nested-1.i [2021-10-21 19:42:06,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/data/0d1c218cc/c9833a8cc6994193a75db1b04bfe0b17/FLAGc9287bcdc [2021-10-21 19:42:06,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/data/0d1c218cc/c9833a8cc6994193a75db1b04bfe0b17 [2021-10-21 19:42:06,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:42:06,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:42:06,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:06,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:42:06,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:42:06,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:06" (1/1) ... [2021-10-21 19:42:06,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f8741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:06, skipping insertion in model container [2021-10-21 19:42:06,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:06" (1/1) ... [2021-10-21 19:42:06,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:42:06,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:42:07,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-21 19:42:07,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:07,136 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:42:07,152 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-21 19:42:07,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:07,175 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:42:07,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07 WrapperNode [2021-10-21 19:42:07,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:07,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:42:07,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:42:07,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:42:07,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:42:07,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:42:07,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:42:07,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:42:07,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:42:07,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:42:07,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:42:07,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:42:07,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (1/1) ... [2021-10-21 19:42:07,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:07,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:07,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:42:07,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:42:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:42:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:42:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:42:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:42:07,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:42:07,623 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:42:07,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:07 BoogieIcfgContainer [2021-10-21 19:42:07,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:42:07,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:42:07,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:42:07,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:42:07,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:42:06" (1/3) ... [2021-10-21 19:42:07,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b60e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:07, skipping insertion in model container [2021-10-21 19:42:07,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:07" (2/3) ... [2021-10-21 19:42:07,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b60e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:07, skipping insertion in model container [2021-10-21 19:42:07,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:07" (3/3) ... [2021-10-21 19:42:07,636 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-10-21 19:42:07,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:42:07,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:42:07,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:42:07,753 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 [2021-10-21 19:42:07,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:42:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:42:07,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:07,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:07,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 179613278, now seen corresponding path program 1 times [2021-10-21 19:42:07,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:07,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042842638] [2021-10-21 19:42:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:07,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:08,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:08,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042842638] [2021-10-21 19:42:08,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042842638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:08,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:08,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:42:08,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413061703] [2021-10-21 19:42:08,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:08,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:08,177 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:08,226 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-10-21 19:42:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:42:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-21 19:42:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:08,238 INFO L225 Difference]: With dead ends: 35 [2021-10-21 19:42:08,239 INFO L226 Difference]: Without dead ends: 16 [2021-10-21 19:42:08,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-21 19:42:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-10-21 19:42:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-21 19:42:08,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-10-21 19:42:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:08,280 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-21 19:42:08,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-21 19:42:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:42:08,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:08,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:08,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:42:08,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:08,284 INFO L82 PathProgramCache]: Analyzing trace with hash 754200042, now seen corresponding path program 1 times [2021-10-21 19:42:08,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:08,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452193552] [2021-10-21 19:42:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:08,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:08,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:08,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452193552] [2021-10-21 19:42:08,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452193552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:08,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:08,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:42:08,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167316198] [2021-10-21 19:42:08,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:08,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:08,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:08,447 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:08,492 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-21 19:42:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:42:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 19:42:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:08,494 INFO L225 Difference]: With dead ends: 23 [2021-10-21 19:42:08,494 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 19:42:08,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 19:42:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-21 19:42:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-21 19:42:08,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-21 19:42:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-21 19:42:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-21 19:42:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:42:08,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:08,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:08,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:42:08,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash -902976276, now seen corresponding path program 1 times [2021-10-21 19:42:08,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:08,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24154823] [2021-10-21 19:42:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:08,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:08,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:08,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24154823] [2021-10-21 19:42:08,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24154823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:08,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215684366] [2021-10-21 19:42:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:08,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:08,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:08,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:08,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:42:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:42:08,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:08,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215684366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:08,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:08,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-21 19:42:08,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173512349] [2021-10-21 19:42:08,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:42:08,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:42:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:08,941 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-10-21 19:42:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:08,972 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-21 19:42:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:42:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 13 [2021-10-21 19:42:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:08,975 INFO L225 Difference]: With dead ends: 26 [2021-10-21 19:42:08,975 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:42:08,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:42:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-21 19:42:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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) [2021-10-21 19:42:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-21 19:42:08,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2021-10-21 19:42:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:08,983 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-21 19:42:08,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-10-21 19:42:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-21 19:42:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:42:08,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:08,985 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:09,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:09,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:09,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:09,199 INFO L82 PathProgramCache]: Analyzing trace with hash -16551058, now seen corresponding path program 2 times [2021-10-21 19:42:09,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:09,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152981712] [2021-10-21 19:42:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:09,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:09,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:09,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152981712] [2021-10-21 19:42:09,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152981712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:09,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934960048] [2021-10-21 19:42:09,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:09,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:09,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:09,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:09,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:42:09,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:42:09,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:09,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:42:09,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934960048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:09,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:09,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-21 19:42:09,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188096253] [2021-10-21 19:42:09,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:42:09,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:09,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:42:09,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:42:09,621 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:09,659 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-21 19:42:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:42:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 19:42:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:09,661 INFO L225 Difference]: With dead ends: 30 [2021-10-21 19:42:09,661 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 19:42:09,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:42:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 19:42:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-21 19:42:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2021-10-21 19:42:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:42:09,668 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-10-21 19:42:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:09,668 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:42:09,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:42:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:42:09,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:09,670 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:09,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:09,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:09,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1434558832, now seen corresponding path program 3 times [2021-10-21 19:42:09,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:09,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953754723] [2021-10-21 19:42:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:09,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:10,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:10,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953754723] [2021-10-21 19:42:10,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953754723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:10,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901382195] [2021-10-21 19:42:10,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:42:10,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:10,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:42:10,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:42:10,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:10,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:42:10,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 19:42:10,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901382195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:10,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:10,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2021-10-21 19:42:10,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311181180] [2021-10-21 19:42:10,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:42:10,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:42:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:42:10,341 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:10,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:10,761 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-10-21 19:42:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:42:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 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 [2021-10-21 19:42:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:10,763 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:42:10,763 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:42:10,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 325.2ms TimeCoverageRelationStatistics Valid=207, Invalid=393, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:42:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:42:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-21 19:42:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-21 19:42:10,780 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2021-10-21 19:42:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:10,780 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-21 19:42:10,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-21 19:42:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:42:10,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:10,782 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:10,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:11,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:11,014 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1316009506, now seen corresponding path program 4 times [2021-10-21 19:42:11,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:11,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353703540] [2021-10-21 19:42:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:11,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:42:11,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:11,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353703540] [2021-10-21 19:42:11,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353703540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:11,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106499373] [2021-10-21 19:42:11,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:42:11,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:11,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:11,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:42:11,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:42:11,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:11,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:42:11,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:42:11,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106499373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:11,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:11,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-21 19:42:11,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643056835] [2021-10-21 19:42:11,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:42:11,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:42:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:42:11,503 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:11,554 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-10-21 19:42:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:42:11,555 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 30 [2021-10-21 19:42:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:11,560 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:42:11,560 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:42:11,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:42:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:42:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-21 19:42:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 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) [2021-10-21 19:42:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-21 19:42:11,586 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2021-10-21 19:42:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:11,588 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-21 19:42:11,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-21 19:42:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:42:11,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:11,591 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:11,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:11,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:42:11,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:11,807 INFO L82 PathProgramCache]: Analyzing trace with hash 158921246, now seen corresponding path program 5 times [2021-10-21 19:42:11,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:11,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929936925] [2021-10-21 19:42:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:11,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:42:11,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:11,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929936925] [2021-10-21 19:42:11,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929936925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:11,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326973172] [2021-10-21 19:42:11,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:42:11,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:11,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:11,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:11,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:42:12,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-21 19:42:12,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:12,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:42:12,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:42:12,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326973172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:12,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:12,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-21 19:42:12,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011850132] [2021-10-21 19:42:12,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:42:12,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:42:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:42:12,277 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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) [2021-10-21 19:42:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:12,337 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-21 19:42:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:42:12,338 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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) Word has length 34 [2021-10-21 19:42:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:12,342 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:42:12,342 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:42:12,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:42:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:42:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-21 19:42:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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) [2021-10-21 19:42:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 19:42:12,351 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-21 19:42:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:12,351 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 19:42:12,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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) [2021-10-21 19:42:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 19:42:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:42:12,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:12,353 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:12,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:12,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:42:12,574 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash -244827298, now seen corresponding path program 6 times [2021-10-21 19:42:12,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:12,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268817869] [2021-10-21 19:42:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:12,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 87 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-21 19:42:12,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:12,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268817869] [2021-10-21 19:42:12,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268817869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:12,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307894973] [2021-10-21 19:42:12,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:42:12,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:12,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:12,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:42:12,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-21 19:42:12,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:12,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:42:12,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-21 19:42:13,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307894973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:13,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:13,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2021-10-21 19:42:13,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079906951] [2021-10-21 19:42:13,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:42:13,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:42:13,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:42:13,143 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-21 19:42:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:13,854 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-10-21 19:42:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:42:13,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 38 [2021-10-21 19:42:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:13,857 INFO L225 Difference]: With dead ends: 101 [2021-10-21 19:42:13,857 INFO L226 Difference]: Without dead ends: 80 [2021-10-21 19:42:13,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 620.9ms TimeCoverageRelationStatistics Valid=669, Invalid=1401, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:42:13,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-21 19:42:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-21 19:42:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 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) [2021-10-21 19:42:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-21 19:42:13,885 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 38 [2021-10-21 19:42:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:13,885 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-21 19:42:13,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-21 19:42:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-21 19:42:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-21 19:42:13,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:13,888 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:13,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:14,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:42:14,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2099079880, now seen corresponding path program 7 times [2021-10-21 19:42:14,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:14,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881690447] [2021-10-21 19:42:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:14,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-21 19:42:14,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:14,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881690447] [2021-10-21 19:42:14,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881690447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:14,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342982160] [2021-10-21 19:42:14,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:42:14,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:14,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:14,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:42:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:42:14,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-21 19:42:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342982160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:14,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:14,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-21 19:42:14,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887216125] [2021-10-21 19:42:14,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:42:14,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:42:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:42:14,801 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:14,866 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-10-21 19:42:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:42:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-21 19:42:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:14,871 INFO L225 Difference]: With dead ends: 109 [2021-10-21 19:42:14,871 INFO L226 Difference]: Without dead ends: 69 [2021-10-21 19:42:14,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:42:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-21 19:42:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-10-21 19:42:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-21 19:42:14,897 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 59 [2021-10-21 19:42:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-21 19:42:14,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-21 19:42:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-21 19:42:14,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:14,910 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:14,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:15,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:15,131 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1083775622, now seen corresponding path program 8 times [2021-10-21 19:42:15,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:15,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327726370] [2021-10-21 19:42:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:15,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-21 19:42:15,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:15,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327726370] [2021-10-21 19:42:15,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327726370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:15,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870519583] [2021-10-21 19:42:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:15,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:15,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:15,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:15,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:42:15,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:42:15,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:15,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:42:15,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-21 19:42:15,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870519583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:15,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:15,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-21 19:42:15,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368076284] [2021-10-21 19:42:15,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:42:15,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:42:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:42:15,880 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:15,952 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-21 19:42:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:42:15,953 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-21 19:42:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:15,955 INFO L225 Difference]: With dead ends: 119 [2021-10-21 19:42:15,955 INFO L226 Difference]: Without dead ends: 75 [2021-10-21 19:42:15,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 175.7ms TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:42:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-21 19:42:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-10-21 19:42:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-10-21 19:42:15,969 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 65 [2021-10-21 19:42:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:15,970 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-10-21 19:42:15,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-10-21 19:42:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-21 19:42:15,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:15,972 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:16,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:16,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:42:16,197 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 832519228, now seen corresponding path program 9 times [2021-10-21 19:42:16,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:16,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404158698] [2021-10-21 19:42:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:16,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 365 proven. 81 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-10-21 19:42:16,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:16,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404158698] [2021-10-21 19:42:16,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404158698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:16,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263359583] [2021-10-21 19:42:16,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:42:16,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:16,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:42:16,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-21 19:42:16,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:16,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:42:16,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 367 proven. 81 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-21 19:42:17,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263359583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:17,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:17,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-21 19:42:17,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028262121] [2021-10-21 19:42:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:42:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:42:17,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:42:17,049 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:17,131 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-21 19:42:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:42:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 71 [2021-10-21 19:42:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:17,132 INFO L225 Difference]: With dead ends: 129 [2021-10-21 19:42:17,133 INFO L226 Difference]: Without dead ends: 81 [2021-10-21 19:42:17,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 219.2ms TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:42:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-21 19:42:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2021-10-21 19:42:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-10-21 19:42:17,146 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 71 [2021-10-21 19:42:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:17,146 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-10-21 19:42:17,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-10-21 19:42:17,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-21 19:42:17,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:17,148 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:17,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:17,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:17,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash -202032770, now seen corresponding path program 10 times [2021-10-21 19:42:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:17,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646101024] [2021-10-21 19:42:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:17,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-21 19:42:17,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:17,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646101024] [2021-10-21 19:42:17,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646101024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:17,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658981811] [2021-10-21 19:42:17,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:42:17,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:17,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:17,553 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:42:17,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:42:17,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:17,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:42:17,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-21 19:42:18,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658981811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:18,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:18,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-21 19:42:18,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353265183] [2021-10-21 19:42:18,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:42:18,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:42:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:42:18,395 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-10-21 19:42:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:18,432 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2021-10-21 19:42:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:42:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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 77 [2021-10-21 19:42:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:18,435 INFO L225 Difference]: With dead ends: 127 [2021-10-21 19:42:18,435 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 19:42:18,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:42:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 19:42:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2021-10-21 19:42:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-21 19:42:18,467 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 77 [2021-10-21 19:42:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:18,468 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-21 19:42:18,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-10-21 19:42:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-21 19:42:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-21 19:42:18,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:18,473 INFO L512 BasicCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:18,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:18,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:42:18,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:18,678 INFO L82 PathProgramCache]: Analyzing trace with hash -112220578, now seen corresponding path program 11 times [2021-10-21 19:42:18,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:18,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788448113] [2021-10-21 19:42:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:18,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-21 19:42:18,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:18,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788448113] [2021-10-21 19:42:18,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788448113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:18,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847268951] [2021-10-21 19:42:18,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:42:18,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:18,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:18,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:18,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:42:19,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-10-21 19:42:19,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:19,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:42:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-21 19:42:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847268951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:19,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:19,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-21 19:42:19,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532839313] [2021-10-21 19:42:19,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:42:19,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:42:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:42:19,922 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:19,971 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-21 19:42:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:42:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-21 19:42:19,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:19,975 INFO L225 Difference]: With dead ends: 150 [2021-10-21 19:42:19,975 INFO L226 Difference]: Without dead ends: 146 [2021-10-21 19:42:19,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:42:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-21 19:42:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2021-10-21 19:42:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.048780487804878) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-21 19:42:19,997 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 100 [2021-10-21 19:42:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:19,999 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-21 19:42:19,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-21 19:42:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-21 19:42:20,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:20,002 INFO L512 BasicCegarLoop]: trace histogram [50, 50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:20,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:20,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:42:20,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:20,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1202143874, now seen corresponding path program 12 times [2021-10-21 19:42:20,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:20,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973786653] [2021-10-21 19:42:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:20,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-21 19:42:20,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:20,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973786653] [2021-10-21 19:42:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973786653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:20,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447831751] [2021-10-21 19:42:20,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:42:20,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:20,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:20,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:42:20,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-21 19:42:20,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:20,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:42:20,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-21 19:42:21,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447831751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:21,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:21,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-21 19:42:21,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224089644] [2021-10-21 19:42:21,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:42:21,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:42:21,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:42:21,848 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:21,908 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2021-10-21 19:42:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:42:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-10-21 19:42:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:21,911 INFO L225 Difference]: With dead ends: 173 [2021-10-21 19:42:21,911 INFO L226 Difference]: Without dead ends: 169 [2021-10-21 19:42:21,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:42:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-21 19:42:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2021-10-21 19:42:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.047945205479452) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-10-21 19:42:21,928 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 123 [2021-10-21 19:42:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:21,928 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-10-21 19:42:21,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-10-21 19:42:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-21 19:42:21,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:21,931 INFO L512 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:21,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:22,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:42:22,146 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:22,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1019764130, now seen corresponding path program 13 times [2021-10-21 19:42:22,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:22,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505351420] [2021-10-21 19:42:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:22,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-21 19:42:22,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:22,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505351420] [2021-10-21 19:42:22,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505351420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:22,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287345720] [2021-10-21 19:42:22,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:42:22,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:22,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:22,375 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:22,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:42:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:22,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:42:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-21 19:42:24,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287345720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:24,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:24,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-21 19:42:24,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214367743] [2021-10-21 19:42:24,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:42:24,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:42:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:42:24,166 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:24,234 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2021-10-21 19:42:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:42:24,235 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 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 146 [2021-10-21 19:42:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:24,238 INFO L225 Difference]: With dead ends: 196 [2021-10-21 19:42:24,238 INFO L226 Difference]: Without dead ends: 192 [2021-10-21 19:42:24,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:42:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-21 19:42:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2021-10-21 19:42:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.047337278106509) internal successors, (177), 169 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2021-10-21 19:42:24,256 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 146 [2021-10-21 19:42:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:24,256 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2021-10-21 19:42:24,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2021-10-21 19:42:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-21 19:42:24,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:24,260 INFO L512 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:24,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:24,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:42:24,474 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1127563646, now seen corresponding path program 14 times [2021-10-21 19:42:24,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:24,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997414555] [2021-10-21 19:42:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:24,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-21 19:42:24,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:24,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997414555] [2021-10-21 19:42:24,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997414555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:24,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529691864] [2021-10-21 19:42:24,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:24,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:24,732 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:24,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:42:25,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:42:25,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:42:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-21 19:42:26,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529691864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:26,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:26,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-21 19:42:26,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660078834] [2021-10-21 19:42:26,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:42:26,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:42:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:42:26,656 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:26,724 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2021-10-21 19:42:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:42:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-10-21 19:42:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:26,727 INFO L225 Difference]: With dead ends: 219 [2021-10-21 19:42:26,727 INFO L226 Difference]: Without dead ends: 215 [2021-10-21 19:42:26,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:42:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-21 19:42:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 193. [2021-10-21 19:42:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.046875) internal successors, (201), 192 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2021-10-21 19:42:26,757 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 169 [2021-10-21 19:42:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:26,757 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2021-10-21 19:42:26,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2021-10-21 19:42:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-21 19:42:26,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:26,761 INFO L512 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:26,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:26,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:26,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1903780258, now seen corresponding path program 15 times [2021-10-21 19:42:26,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:26,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46513444] [2021-10-21 19:42:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:26,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-21 19:42:27,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:27,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46513444] [2021-10-21 19:42:27,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46513444] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:27,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307451945] [2021-10-21 19:42:27,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:42:27,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:27,251 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:27,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:42:28,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2021-10-21 19:42:28,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:42:28,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-21 19:42:29,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307451945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:29,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:29,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-21 19:42:29,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717486426] [2021-10-21 19:42:29,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:42:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:42:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:42:29,690 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:29,782 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2021-10-21 19:42:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:42:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 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 192 [2021-10-21 19:42:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:29,789 INFO L225 Difference]: With dead ends: 242 [2021-10-21 19:42:29,789 INFO L226 Difference]: Without dead ends: 238 [2021-10-21 19:42:29,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:42:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-21 19:42:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 216. [2021-10-21 19:42:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0465116279069768) internal successors, (225), 215 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2021-10-21 19:42:29,814 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 192 [2021-10-21 19:42:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:29,814 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2021-10-21 19:42:29,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2021-10-21 19:42:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-21 19:42:29,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:29,819 INFO L512 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:29,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:30,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:42:30,038 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:30,038 INFO L82 PathProgramCache]: Analyzing trace with hash 684377470, now seen corresponding path program 16 times [2021-10-21 19:42:30,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:30,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925749049] [2021-10-21 19:42:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:30,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-21 19:42:30,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:30,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925749049] [2021-10-21 19:42:30,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925749049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:30,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958094753] [2021-10-21 19:42:30,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:42:30,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:30,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:30,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:42:31,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:42:31,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:31,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:42:31,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-21 19:42:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958094753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:32,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:42:32,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-21 19:42:32,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420698418] [2021-10-21 19:42:32,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:42:32,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:42:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:42:32,790 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:32,931 INFO L93 Difference]: Finished difference Result 265 states and 276 transitions. [2021-10-21 19:42:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:42:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-10-21 19:42:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:32,936 INFO L225 Difference]: With dead ends: 265 [2021-10-21 19:42:32,936 INFO L226 Difference]: Without dead ends: 261 [2021-10-21 19:42:32,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 221.3ms TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:42:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-21 19:42:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 239. [2021-10-21 19:42:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2021-10-21 19:42:32,970 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 215 [2021-10-21 19:42:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:32,974 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2021-10-21 19:42:32,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2021-10-21 19:42:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-21 19:42:32,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:32,980 INFO L512 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:33,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-21 19:42:33,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:42:33,206 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:42:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:33,206 INFO L82 PathProgramCache]: Analyzing trace with hash -16999842, now seen corresponding path program 17 times [2021-10-21 19:42:33,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:33,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917314001] [2021-10-21 19:42:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:33,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 10917 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 19:42:38,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:38,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917314001] [2021-10-21 19:42:38,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917314001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:38,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244125410] [2021-10-21 19:42:38,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:42:38,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:38,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:38,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:42:39,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-10-21 19:42:39,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-21 19:42:39,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 19:42:40,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244125410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:40,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:40,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [104] total 106 [2021-10-21 19:42:40,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456020610] [2021-10-21 19:42:40,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-21 19:42:40,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-21 19:42:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2021-10-21 19:42:40,590 INFO L87 Difference]: Start difference. First operand 239 states and 249 transitions. Second operand has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:42,606 INFO L93 Difference]: Finished difference Result 9779 states and 10239 transitions. [2021-10-21 19:42:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-21 19:42:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 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 238 [2021-10-21 19:42:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:42,608 INFO L225 Difference]: With dead ends: 9779 [2021-10-21 19:42:42,608 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:42:42,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4795.8ms TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2021-10-21 19:42:42,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:42:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:42:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:42:42,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2021-10-21 19:42:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:42,628 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:42:42,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:42:42,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:42:42,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:42:42,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:42,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:42,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:42:42,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:42:42,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:44:53,457 WARN L207 SmtUtils]: Spent 2.18 m on a formula simplification. DAG size of input: 5172 DAG size of output: 2205 [2021-10-21 19:44:53,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:44:54,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:46:38,558 WARN L207 SmtUtils]: Spent 1.73 m on a formula simplification. DAG size of input: 2186 DAG size of output: 363 [2021-10-21 19:46:45,679 WARN L207 SmtUtils]: Spent 7.11 s on a formula simplification. DAG size of input: 663 DAG size of output: 59 [2021-10-21 19:46:45,683 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:46:45,683 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-21 19:46:45,683 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2021-10-21 19:46:45,684 INFO L853 garLoopResultBuilder]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 60 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 6)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 4) (<= 40 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 .cse1 (<= 70 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 7)) (and .cse0 (<= ULTIMATE.start_main_~i~0 1) .cse1 (<= 10 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 5) (<= 50 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 8) (<= 80 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 30 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 3)) (and .cse0 .cse1 (<= 90 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 9)))) [2021-10-21 19:46:45,684 INFO L857 garLoopResultBuilder]: For program point L31-4(lines 31 35) no Hoare annotation was computed. [2021-10-21 19:46:45,684 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-21 19:46:45,684 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:46:45,685 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-21 19:46:45,685 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2021-10-21 19:46:45,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:46:45,686 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse16 (<= 60 ULTIMATE.start_main_~k~0)) (.cse2 (<= 20 ULTIMATE.start_main_~k~0)) (.cse12 (<= 70 ULTIMATE.start_main_~k~0)) (.cse23 (<= 30 ULTIMATE.start_main_~k~0)) (.cse29 (<= 80 ULTIMATE.start_main_~k~0)) (.cse10 (<= ULTIMATE.start_main_~j~0 3)) (.cse7 (<= ULTIMATE.start_main_~j~0 7)) (.cse28 (<= 10 ULTIMATE.start_main_~k~0)) (.cse30 (<= 90 ULTIMATE.start_main_~k~0)) (.cse11 (<= ULTIMATE.start_main_~j~0 8)) (.cse21 (<= 40 ULTIMATE.start_main_~k~0)) (.cse25 (<= 50 ULTIMATE.start_main_~k~0)) (.cse4 (= ULTIMATE.start_main_~j~0 0)) (.cse17 (<= ULTIMATE.start_main_~i~0 5)) (.cse13 (<= ULTIMATE.start_main_~i~0 7)) (.cse6 (<= ULTIMATE.start_main_~j~0 5)) (.cse27 (<= ULTIMATE.start_main_~j~0 1)) (.cse18 (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse24 (<= ULTIMATE.start_main_~i~0 4)) (.cse26 (<= ULTIMATE.start_main_~j~0 6)) (.cse19 (<= ULTIMATE.start_main_~i~0 8)) (.cse3 (<= ULTIMATE.start_main_~i~0 2)) (.cse22 (= ULTIMATE.start_main_~i~0 0)) (.cse5 (<= ULTIMATE.start_main_~i~0 6)) (.cse14 (<= ULTIMATE.start_main_~j~0 9)) (.cse9 (<= ULTIMATE.start_main_~i~0 1)) (.cse20 (<= ULTIMATE.start_main_~j~0 2)) (.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0)) (.cse8 (<= ULTIMATE.start_main_~i~0 3)) (.cse15 (<= ULTIMATE.start_main_~j~0 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (<= 65 ULTIMATE.start_main_~k~0) .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= 37 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse9 .cse1 .cse10 (<= 13 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 68 ULTIMATE.start_main_~k~0) .cse11 .cse5) (and .cse0 .cse1 .cse12 .cse5) (and .cse0 (<= 79 ULTIMATE.start_main_~k~0) .cse1 .cse13 .cse14) (and .cse0 .cse9 .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse16 .cse17) (and .cse0 .cse1 .cse18 (<= 94 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 (<= 54 ULTIMATE.start_main_~k~0) .cse17 .cse15) (and .cse0 .cse1 .cse18 (<= 97 ULTIMATE.start_main_~k~0) .cse7) (and .cse0 .cse1 .cse16 .cse5 .cse4) (and .cse0 .cse1 .cse18 .cse6 (<= 95 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 83 ULTIMATE.start_main_~k~0) .cse10 .cse19) (and .cse0 .cse1 .cse17 .cse20 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 53 ULTIMATE.start_main_~k~0) .cse1 .cse17 .cse10) (and .cse0 .cse1 .cse21 .cse8) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~k~0) .cse10 .cse22) (and .cse0 .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse8 .cse14) (and .cse0 .cse1 .cse23 .cse8 .cse4) (and .cse0 .cse1 .cse6 (<= 85 ULTIMATE.start_main_~k~0) .cse19) (and .cse0 .cse1 .cse24 .cse25) (and .cse0 .cse1 .cse26 .cse19 (<= 86 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse6 (<= 15 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse24 (<= 41 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 25 ULTIMATE.start_main_~k~0) .cse6 .cse3) (and .cse0 .cse1 (<= 82 ULTIMATE.start_main_~k~0) .cse19 .cse20) (and .cse0 .cse9 .cse1 .cse28 .cse4) (and .cse0 .cse1 .cse24 .cse7 (<= 47 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse20 (<= 42 ULTIMATE.start_main_~k~0)) (and (<= 29 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse3 .cse14) (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~k~0) .cse22 .cse14) (and .cse0 .cse1 .cse5 (<= 66 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 (<= 48 ULTIMATE.start_main_~k~0) .cse11 .cse24) (and .cse0 .cse9 .cse1 (<= 19 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 (<= 28 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 7 ULTIMATE.start_main_~k~0) .cse7 .cse22) (and .cse0 .cse1 (<= 88 ULTIMATE.start_main_~k~0) .cse11 .cse19) (and .cse0 .cse1 .cse10 (<= 33 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse27 .cse1 .cse19 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 (<= 64 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse19 .cse4 .cse29) (and .cse0 .cse9 .cse1 .cse2) (and .cse0 .cse1 .cse13 .cse10 (<= 73 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse4) (and .cse0 .cse1 (<= 55 ULTIMATE.start_main_~k~0) .cse17 .cse6) (and .cse0 .cse1 (<= 5 ULTIMATE.start_main_~k~0) .cse6 .cse22) (and .cse0 .cse1 .cse24 (<= 44 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse9 .cse1 .cse11 (<= 18 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse10 .cse3) (and .cse0 .cse1 .cse12 .cse13 .cse4) (and .cse0 .cse27 .cse1 (<= 1 ULTIMATE.start_main_~k~0) .cse22) (and .cse0 .cse1 .cse11 (<= 38 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse1 (<= 59 ULTIMATE.start_main_~k~0) .cse17 .cse14) (and .cse0 .cse1 .cse26 .cse3 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 92 ULTIMATE.start_main_~k~0) .cse1 .cse18 .cse20) (and .cse0 .cse1 .cse6 .cse8 (<= 35 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse23 .cse3) (and .cse0 .cse1 .cse18 (<= 96 ULTIMATE.start_main_~k~0) .cse26) (and (<= 87 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse7 .cse19) (and .cse0 .cse1 (<= 77 ULTIMATE.start_main_~k~0) .cse13 .cse7) (and .cse0 .cse27 .cse1 .cse8 (<= 31 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 89 ULTIMATE.start_main_~k~0) .cse19 .cse14) (and .cse0 .cse1 .cse13 (<= 72 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse17 .cse7) (and .cse0 .cse1 .cse18 (<= 93 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 .cse24 (<= 49 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 .cse13 (<= 78 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse17 (<= 56 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 .cse18 .cse11 (<= 98 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse10 (<= 43 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse11 .cse17 (<= 58 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 .cse7 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse30 .cse19) (and .cse0 .cse1 .cse13 .cse29) (and .cse0 (<= 63 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse10) (and .cse0 .cse1 .cse7 .cse3 (<= 27 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse18 (<= 91 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 32 ULTIMATE.start_main_~k~0) .cse8 .cse20) (and .cse0 .cse1 (<= 74 ULTIMATE.start_main_~k~0) .cse13 .cse15) (and .cse0 .cse1 (<= 2 ULTIMATE.start_main_~k~0) .cse22 .cse20) (and .cse0 .cse27 .cse1 (<= 61 ULTIMATE.start_main_~k~0) .cse5) (and (<= 36 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse26 .cse8) (and .cse0 .cse1 .cse13 .cse26 (<= 76 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse13 (<= 71 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse7 (<= 17 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse6 (<= 45 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse26 (<= 16 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse3 .cse20) (and .cse0 .cse1 .cse22 .cse28) (and .cse0 .cse1 .cse30 .cse18 .cse4) (and .cse0 .cse1 (<= 6 ULTIMATE.start_main_~k~0) .cse22 .cse26) (and (<= 8 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse11 .cse22) (and .cse0 .cse1 .cse24 .cse21 .cse4) (and .cse0 .cse1 .cse17 .cse25 .cse4) (and .cse0 .cse27 .cse1 .cse17 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse13 (<= 75 ULTIMATE.start_main_~k~0) .cse6) (and .cse0 .cse1 .cse5 .cse20 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse27 .cse1 (<= 11 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 99 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse24 .cse26 (<= 46 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 84 ULTIMATE.start_main_~k~0) .cse19 .cse15) (and .cse0 .cse1 (<= 24 ULTIMATE.start_main_~k~0) .cse3 .cse15) (and .cse0 (<= 4 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse15) (and .cse0 .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse5 .cse14) (and .cse0 .cse9 .cse1 (<= 12 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse8 .cse15 (<= 34 ULTIMATE.start_main_~k~0)))) [2021-10-21 19:46:45,687 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:46:45,687 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-21 19:46:45,687 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-21 19:46:45,687 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2021-10-21 19:46:45,687 INFO L860 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-10-21 19:46:45,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:46:45,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:46:45 BoogieIcfgContainer [2021-10-21 19:46:45,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:46:45,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:46:45,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:46:45,765 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:46:45,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:07" (3/4) ... [2021-10-21 19:46:45,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:46:45,782 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:46:45,782 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:46:45,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:46:45,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:46:45,833 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:46:45,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:46:45,835 INFO L168 Benchmark]: Toolchain (without parser) took 278993.69 ms. Allocated memory was 96.5 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 61.9 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 681.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,835 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:45,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.54 ms. Allocated memory is still 96.5 MB. Free memory was 61.9 MB in the beginning and 72.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,837 INFO L168 Benchmark]: Boogie Preprocessor took 41.16 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:45,837 INFO L168 Benchmark]: RCFGBuilder took 361.36 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 60.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,838 INFO L168 Benchmark]: TraceAbstraction took 278136.54 ms. Allocated memory was 96.5 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 60.0 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 4.0 GB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,838 INFO L168 Benchmark]: Witness Printer took 69.18 ms. Allocated memory is still 6.1 GB. Free memory was 5.4 GB in the beginning and 5.4 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:45,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.54 ms. Allocated memory is still 96.5 MB. Free memory was 61.9 MB in the beginning and 72.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.16 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 361.36 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 60.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 278136.54 ms. Allocated memory was 96.5 MB in the beginning and 6.1 GB in the end (delta: 6.0 GB). Free memory was 60.0 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 4.0 GB. Max. memory is 16.1 GB. * Witness Printer took 69.18 ms. Allocated memory is still 6.1 GB. Free memory was 5.4 GB in the beginning and 5.4 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 277957.2ms, OverallIterations: 19, TraceHistogramMax: 100, EmptinessCheckTime: 57.6ms, AutomataDifference: 4334.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 242824.7ms, InitialAbstractionConstructionTime: 18.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 561 SDtfs, 1217 SDslu, 2554 SDs, 0 SdLazy, 1243 SolverSat, 276 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 956.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1898 GetRequests, 1522 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 7503.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=18, InterpolantAutomatonStates: 301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 323.7ms AutomataMinimizationTime, 19 MinimizatonAttempts, 206 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 1898 HoareAnnotationTreeSize, 4 FomulaSimplifications, 5909860 FormulaSimplificationTreeSizeReduction, 132055.3ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 141739 FormulaSimplificationTreeSizeReductionInter, 110698.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 367.9ms SsaConstructionTime, 1939.9ms SatisfiabilityAnalysisTime, 18832.4ms InterpolantComputationTime, 3223 NumberOfCodeBlocks, 3172 NumberOfCodeBlocksAsserted, 304 NumberOfCheckSat, 3187 ConstructedInterpolants, 0 QuantifiedInterpolants, 15496 SizeOfPredicates, 34 NumberOfNonLiveVariables, 4267 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 34349/88241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 10 <= n) && 20 <= k) && i <= 2) && j == 0) || ((((10 <= m && 10 <= n) && 65 <= k) && i <= 6) && j <= 5)) || ((((10 <= m && 10 <= n) && j <= 7) && 37 <= k) && i <= 3)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 3) && 13 <= k)) || ((((10 <= m && 10 <= n) && 68 <= k) && j <= 8) && i <= 6)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 6)) || ((((10 <= m && 79 <= k) && 10 <= n) && i <= 7) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 14 <= k) && j <= 4)) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 5)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 94 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 54 <= k) && i <= 5) && j <= 4)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 97 <= k) && j <= 7)) || ((((10 <= m && 10 <= n) && 60 <= k) && i <= 6) && j == 0)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 5) && 95 <= k)) || ((((10 <= m && 10 <= n) && 83 <= k) && j <= 3) && i <= 8)) || ((((10 <= m && 10 <= n) && i <= 5) && j <= 2) && 52 <= k)) || ((((10 <= m && 53 <= k) && 10 <= n) && i <= 5) && j <= 3)) || (((10 <= m && 10 <= n) && 40 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 3 <= k) && j <= 3) && i == 0)) || ((((10 <= m && 10 <= n) && 39 <= k) && i <= 3) && j <= 9)) || ((((10 <= m && 10 <= n) && 30 <= k) && i <= 3) && j == 0)) || ((((10 <= m && 10 <= n) && j <= 5) && 85 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 4) && 50 <= k)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 8) && 86 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 5) && 15 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 21 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 25 <= k) && j <= 5) && i <= 2)) || ((((10 <= m && 10 <= n) && 82 <= k) && i <= 8) && j <= 2)) || ((((10 <= m && i <= 1) && 10 <= n) && 10 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 7) && 47 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 2) && 42 <= k)) || ((((29 <= k && 10 <= m) && 10 <= n) && i <= 2) && j <= 9)) || ((((10 <= m && 10 <= n) && 9 <= k) && i == 0) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 6) && 66 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && 48 <= k) && j <= 8) && i <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && 19 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && 28 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 7 <= k) && j <= 7) && i == 0)) || ((((10 <= m && 10 <= n) && 88 <= k) && j <= 8) && i <= 8)) || ((((10 <= m && 10 <= n) && j <= 3) && 33 <= k) && i <= 3)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 8) && 81 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && 64 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && i <= 8) && j == 0) && 80 <= k)) || (((10 <= m && i <= 1) && 10 <= n) && 20 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 3) && 73 <= k)) || ((((10 <= m && 0 <= k) && 10 <= n) && i == 0) && j == 0)) || ((((10 <= m && 10 <= n) && 55 <= k) && i <= 5) && j <= 5)) || ((((10 <= m && 10 <= n) && 5 <= k) && j <= 5) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 44 <= k) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 8) && 18 <= k)) || ((((10 <= m && 10 <= n) && 23 <= k) && j <= 3) && i <= 2)) || ((((10 <= m && 10 <= n) && 70 <= k) && i <= 7) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && 1 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && j <= 8) && 38 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 59 <= k) && i <= 5) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 2) && 26 <= k)) || ((((10 <= m && 92 <= k) && 10 <= n) && i + 1 <= n) && j <= 2)) || ((((10 <= m && 10 <= n) && j <= 5) && i <= 3) && 35 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 96 <= k) && j <= 6)) || ((((87 <= k && 10 <= m) && 10 <= n) && j <= 7) && i <= 8)) || ((((10 <= m && 10 <= n) && 77 <= k) && i <= 7) && j <= 7)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 3) && 31 <= k)) || ((((10 <= m && 10 <= n) && 89 <= k) && i <= 8) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 7) && 72 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && 57 <= k) && i <= 5) && j <= 7)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 93 <= k) && j <= 3)) || ((((10 <= m && 10 <= n) && i <= 4) && 49 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 7) && 78 <= k)) || ((((10 <= m && 10 <= n) && i <= 5) && 56 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 8) && 98 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 3) && 43 <= k)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 5) && 58 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 7) && 67 <= k)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 7) && 80 <= k)) || ((((10 <= m && 63 <= k) && 10 <= n) && i <= 6) && j <= 3)) || ((((10 <= m && 10 <= n) && j <= 7) && i <= 2) && 27 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 1 <= n) && 91 <= k)) || (((10 <= m && 10 <= n) && i + 1 <= n) && 100 <= k)) || ((((10 <= m && 10 <= n) && 32 <= k) && i <= 3) && j <= 2)) || ((((10 <= m && 10 <= n) && 74 <= k) && i <= 7) && j <= 4)) || ((((10 <= m && 10 <= n) && 2 <= k) && i == 0) && j <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && 61 <= k) && i <= 6)) || ((((36 <= k && 10 <= m) && 10 <= n) && j <= 6) && i <= 3)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 6) && 76 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 7) && 71 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 7) && 17 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 5) && 45 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 6) && 16 <= k)) || ((((10 <= m && 10 <= n) && 22 <= k) && i <= 2) && j <= 2)) || (((10 <= m && 10 <= n) && i == 0) && 10 <= k)) || ((((10 <= m && 10 <= n) && 90 <= k) && i + 1 <= n) && j == 0)) || ((((10 <= m && 10 <= n) && 6 <= k) && i == 0) && j <= 6)) || ((((8 <= k && 10 <= m) && 10 <= n) && j <= 8) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 40 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 5) && 50 <= k) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 5) && 51 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && 75 <= k) && j <= 5)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 2) && 62 <= k)) || ((((10 <= m && i <= 1) && j <= 1) && 10 <= n) && 11 <= k)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 99 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 6) && 46 <= k)) || ((((10 <= m && 10 <= n) && 84 <= k) && i <= 8) && j <= 4)) || ((((10 <= m && 10 <= n) && 24 <= k) && i <= 2) && j <= 4)) || ((((10 <= m && 4 <= k) && 10 <= n) && i == 0) && j <= 4)) || ((((10 <= m && 10 <= n) && 69 <= k) && i <= 6) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 12 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && i <= 3) && j <= 4) && 34 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((((10 <= m && 10 <= n) && 100 <= k) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 6)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= n) && i <= 4) && 40 <= k)) || (((10 <= m && 0 <= k) && 10 <= n) && i == 0)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 7)) || (((10 <= m && i <= 1) && 10 <= n) && 10 <= k)) || (((10 <= m && 10 <= n) && i <= 5) && 50 <= k)) || (((10 <= m && 10 <= n) && i <= 8) && 80 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 3)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 9) RESULT: Ultimate proved your program to be correct! [2021-10-21 19:46:45,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece71386-6a36-45e2-baad-d422429c8920/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...