./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD --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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:10:21,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:10:21,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:10:21,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:10:21,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:10:21,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:10:21,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:10:21,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:10:21,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:10:21,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:10:21,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:10:21,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:10:21,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:10:21,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:10:21,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:10:21,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:10:21,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:10:21,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:10:21,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:10:21,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:10:21,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:10:21,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:10:21,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:10:21,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:10:21,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:10:21,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:10:21,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:10:21,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:10:21,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:10:21,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:10:21,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:10:21,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:10:21,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:10:21,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:10:21,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:10:21,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:10:21,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:10:21,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:10:21,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:10:21,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:10:21,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:10:21,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:10:21,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:10:21,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:10:21,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:10:21,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:10:21,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:10:21,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:10:21,432 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:10:21,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:10:21,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:10:21,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:10:21,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:10:21,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:10:21,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:10:21,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:10:21,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:10:21,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:10:21,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:10:21,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:10:21,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:10:21,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:10:21,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:10:21,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:10:21,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:21,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:10:21,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:10:21,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:10:21,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:10:21,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:10:21,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:10:21,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:10:21,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:10:21,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:10:21,438 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_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2021-10-28 23:10:21,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:10:21,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:10:21,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:10:21,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:10:21,787 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:10:21,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2021-10-28 23:10:21,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/data/7bb4ed205/a7d1e0622f8b465eb5223ff1ebeb1009/FLAGfde12bce4 [2021-10-28 23:10:22,502 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:10:22,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2021-10-28 23:10:22,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/data/7bb4ed205/a7d1e0622f8b465eb5223ff1ebeb1009/FLAGfde12bce4 [2021-10-28 23:10:22,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/data/7bb4ed205/a7d1e0622f8b465eb5223ff1ebeb1009 [2021-10-28 23:10:22,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:10:22,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:10:22,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:22,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:10:22,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:10:22,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:22" (1/1) ... [2021-10-28 23:10:22,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460570dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:22, skipping insertion in model container [2021-10-28 23:10:22,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:22" (1/1) ... [2021-10-28 23:10:22,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:10:22,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:10:23,140 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_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2021-10-28 23:10:23,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:23,208 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:10:23,228 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_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2021-10-28 23:10:23,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:23,279 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:10:23,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23 WrapperNode [2021-10-28 23:10:23,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:23,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:23,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:10:23,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:10:23,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:23,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:10:23,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:10:23,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:10:23,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:10:23,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:10:23,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:10:23,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:10:23,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (1/1) ... [2021-10-28 23:10:23,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:23,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:10:23,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:10:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:10:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:10:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:10:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:10:23,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:10:23,942 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 23:10:23,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:23 BoogieIcfgContainer [2021-10-28 23:10:23,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:10:23,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:10:23,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:10:23,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:10:23,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:10:22" (1/3) ... [2021-10-28 23:10:23,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157e1b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:23, skipping insertion in model container [2021-10-28 23:10:23,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:23" (2/3) ... [2021-10-28 23:10:23,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157e1b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:23, skipping insertion in model container [2021-10-28 23:10:23,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:23" (3/3) ... [2021-10-28 23:10:23,966 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2021-10-28 23:10:23,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:10:23,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 23:10:24,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:10:24,105 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 [2021-10-28 23:10:24,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 23:10:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:10:24,132 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:24,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-10-28 23:10:24,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:24,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070880608] [2021-10-28 23:10:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:24,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:24,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070880608] [2021-10-28 23:10:24,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070880608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:24,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:24,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:10:24,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129771579] [2021-10-28 23:10:24,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:10:24,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:10:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:10:24,400 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-10-28 23:10:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:24,421 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-10-28 23:10:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:10:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 23:10:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:24,432 INFO L225 Difference]: With dead ends: 87 [2021-10-28 23:10:24,432 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:10:24,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:10:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:10:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 23:10:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-28 23:10:24,472 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-10-28 23:10:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:24,473 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-28 23:10:24,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2021-10-28 23:10:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-28 23:10:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:10:24,474 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,474 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:10:24,475 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-10-28 23:10:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644784677] [2021-10-28 23:10:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:24,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:24,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555445444] [2021-10-28 23:10:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:24,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:24,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:10:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:24,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:24,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644784677] [2021-10-28 23:10:24,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:24,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555445444] [2021-10-28 23:10:24,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555445444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:24,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:24,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:24,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76116009] [2021-10-28 23:10:24,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:24,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:24,816 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:24,967 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-28 23:10:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-28 23:10:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:24,970 INFO L225 Difference]: With dead ends: 69 [2021-10-28 23:10:24,970 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:10:24,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:10:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-10-28 23:10:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-10-28 23:10:24,980 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-10-28 23:10:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:24,981 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-10-28 23:10:24,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-10-28 23:10:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:10:24,982 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:25,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:25,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:25,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:25,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-10-28 23:10:25,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:25,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548519112] [2021-10-28 23:10:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:25,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:25,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:25,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813228269] [2021-10-28 23:10:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:25,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:25,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:25,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:10:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:25,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:10:25,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:25,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:25,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548519112] [2021-10-28 23:10:25,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:25,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813228269] [2021-10-28 23:10:25,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813228269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:25,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:25,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:10:25,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515250930] [2021-10-28 23:10:25,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:10:25,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:10:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:25,658 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:25,965 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-10-28 23:10:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-28 23:10:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:25,968 INFO L225 Difference]: With dead ends: 79 [2021-10-28 23:10:25,970 INFO L226 Difference]: Without dead ends: 77 [2021-10-28 23:10:25,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-28 23:10:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-10-28 23:10:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 23:10:25,986 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-10-28 23:10:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:25,987 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 23:10:25,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-10-28 23:10:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:10:25,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:25,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:26,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:26,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-10-28 23:10:26,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:26,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414446135] [2021-10-28 23:10:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:26,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:26,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723596308] [2021-10-28 23:10:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:26,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:10:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:10:26,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:26,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:26,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414446135] [2021-10-28 23:10:26,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:26,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723596308] [2021-10-28 23:10:26,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723596308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:26,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:26,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:10:26,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693009628] [2021-10-28 23:10:26,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:26,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:26,975 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:27,174 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-28 23:10:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:10:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-10-28 23:10:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:27,184 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:10:27,184 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:10:27,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:10:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 23:10:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-28 23:10:27,211 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-10-28 23:10:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:27,211 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-28 23:10:27,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-28 23:10:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:10:27,213 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:27,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:27,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:27,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:27,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-10-28 23:10:27,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:27,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728177719] [2021-10-28 23:10:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:27,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:27,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009085417] [2021-10-28 23:10:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:27,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:27,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:27,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:10:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 23:10:27,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:28,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:28,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728177719] [2021-10-28 23:10:28,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:28,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009085417] [2021-10-28 23:10:28,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009085417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:28,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:28,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 23:10:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159584070] [2021-10-28 23:10:28,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:10:28,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:10:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:10:28,314 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-28 23:10:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:28,747 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-28 23:10:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:10:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) Word has length 22 [2021-10-28 23:10:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:28,749 INFO L225 Difference]: With dead ends: 61 [2021-10-28 23:10:28,749 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 23:10:28,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:10:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 23:10:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-10-28 23:10:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 53 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) [2021-10-28 23:10:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-28 23:10:28,766 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-10-28 23:10:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:28,767 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-28 23:10:28,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-28 23:10:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-28 23:10:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:10:28,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:28,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:28,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:28,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:28,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-10-28 23:10:29,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:29,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809497067] [2021-10-28 23:10:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:29,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:29,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:29,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672263358] [2021-10-28 23:10:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:29,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:29,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:29,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:10:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:29,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:10:29,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:29,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:29,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809497067] [2021-10-28 23:10:29,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:29,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672263358] [2021-10-28 23:10:29,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672263358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:29,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:29,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:10:29,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227916024] [2021-10-28 23:10:29,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:29,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:29,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:29,939 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:30,248 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-10-28 23:10:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:10:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-28 23:10:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:30,249 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:10:30,250 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:10:30,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:10:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:10:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 23:10:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1875) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-10-28 23:10:30,258 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-10-28 23:10:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:30,258 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-10-28 23:10:30,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-10-28 23:10:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:10:30,259 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:30,260 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:30,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:30,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 23:10:30,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:30,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-10-28 23:10:30,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:30,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873698848] [2021-10-28 23:10:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:30,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:30,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:30,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228504486] [2021-10-28 23:10:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:30,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:30,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:30,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:10:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:30,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 23:10:30,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:31,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:31,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873698848] [2021-10-28 23:10:31,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:31,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228504486] [2021-10-28 23:10:31,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228504486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:31,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:31,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:10:31,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162933539] [2021-10-28 23:10:31,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:31,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:31,158 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:31,509 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-10-28 23:10:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:31,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 23:10:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:31,511 INFO L225 Difference]: With dead ends: 100 [2021-10-28 23:10:31,511 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:10:31,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:10:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:10:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-10-28 23:10:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 60 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) [2021-10-28 23:10:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 23:10:31,524 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 27 [2021-10-28 23:10:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:31,525 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 23:10:31,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 23:10:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:10:31,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:31,527 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:31,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:31,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:31,743 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-10-28 23:10:31,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:31,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876256872] [2021-10-28 23:10:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:31,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:31,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:31,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038317095] [2021-10-28 23:10:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:31,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:31,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:31,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:31,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:10:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:31,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:10:31,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:32,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:32,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876256872] [2021-10-28 23:10:32,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:32,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038317095] [2021-10-28 23:10:32,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038317095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:32,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:32,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:10:32,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281566357] [2021-10-28 23:10:32,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:10:32,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:10:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:32,130 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:32,314 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-10-28 23:10:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:10:32,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-28 23:10:32,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:32,323 INFO L225 Difference]: With dead ends: 152 [2021-10-28 23:10:32,323 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 23:10:32,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:10:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 23:10:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 94. [2021-10-28 23:10:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 93 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-10-28 23:10:32,358 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 30 [2021-10-28 23:10:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:32,359 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-10-28 23:10:32,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-10-28 23:10:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:10:32,365 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:32,365 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:32,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:32,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:32,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1655371511, now seen corresponding path program 1 times [2021-10-28 23:10:32,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:32,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366488266] [2021-10-28 23:10:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:32,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:32,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:32,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563240193] [2021-10-28 23:10:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:32,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:32,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:32,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:10:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:32,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:10:32,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:33,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:33,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366488266] [2021-10-28 23:10:33,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:33,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563240193] [2021-10-28 23:10:33,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563240193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:33,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:33,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:10:33,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111596982] [2021-10-28 23:10:33,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:33,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:33,146 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:33,280 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2021-10-28 23:10:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:10:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-10-28 23:10:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:33,281 INFO L225 Difference]: With dead ends: 123 [2021-10-28 23:10:33,281 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 23:10:33,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:10:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 23:10:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-10-28 23:10:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-28 23:10:33,299 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 30 [2021-10-28 23:10:33,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:33,300 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-28 23:10:33,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-28 23:10:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:10:33,305 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:33,306 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:33,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:33,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 23:10:33,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-10-28 23:10:33,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:33,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347832252] [2021-10-28 23:10:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:33,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:33,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:33,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094412075] [2021-10-28 23:10:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:33,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:33,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:33,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:33,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:10:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:33,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-28 23:10:33,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:35,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:35,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347832252] [2021-10-28 23:10:35,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:35,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094412075] [2021-10-28 23:10:35,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094412075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:35,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:35,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:10:35,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622648065] [2021-10-28 23:10:35,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:35,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:35,466 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:35,979 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-10-28 23:10:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-28 23:10:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:35,982 INFO L225 Difference]: With dead ends: 90 [2021-10-28 23:10:35,982 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 23:10:35,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:10:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 23:10:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2021-10-28 23:10:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2021-10-28 23:10:35,999 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 39 [2021-10-28 23:10:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2021-10-28 23:10:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2021-10-28 23:10:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:10:36,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:36,002 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:36,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:36,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:36,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash -50682455, now seen corresponding path program 1 times [2021-10-28 23:10:36,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:36,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917954165] [2021-10-28 23:10:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:36,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:36,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:36,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926337074] [2021-10-28 23:10:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:36,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:36,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:36,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:36,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:10:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:36,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:10:36,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:36,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:36,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917954165] [2021-10-28 23:10:36,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:37,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926337074] [2021-10-28 23:10:37,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926337074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:37,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:37,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 23:10:37,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285881386] [2021-10-28 23:10:37,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:37,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:37,003 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:37,212 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-10-28 23:10:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:10:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-28 23:10:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:37,214 INFO L225 Difference]: With dead ends: 70 [2021-10-28 23:10:37,214 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:10:37,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:10:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:10:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 23:10:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0) internal successors, (41), 41 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) [2021-10-28 23:10:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2021-10-28 23:10:37,223 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 39 [2021-10-28 23:10:37,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:37,224 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2021-10-28 23:10:37,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2021-10-28 23:10:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 23:10:37,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:37,225 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:37,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:37,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 23:10:37,449 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:10:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1464858938, now seen corresponding path program 1 times [2021-10-28 23:10:37,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:37,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246873896] [2021-10-28 23:10:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:37,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:37,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:10:37,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900456892] [2021-10-28 23:10:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:37,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:37,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:37,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:10:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:37,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 23:10:37,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:39,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:39,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246873896] [2021-10-28 23:10:39,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:10:39,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900456892] [2021-10-28 23:10:39,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900456892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:39,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:39,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 23:10:39,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120240777] [2021-10-28 23:10:39,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:10:39,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:10:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:39,131 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) [2021-10-28 23:10:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:39,479 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-10-28 23:10:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:39,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) Word has length 41 [2021-10-28 23:10:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:39,480 INFO L225 Difference]: With dead ends: 42 [2021-10-28 23:10:39,480 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:10:39,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:10:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:10:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:10:39,481 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) [2021-10-28 23:10:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:10:39,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-28 23:10:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:39,482 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:10:39,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 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) [2021-10-28 23:10:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:10:39,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:10:39,486 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,487 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,488 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:10:39,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:39,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 23:10:39,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:10:39,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:39,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:10:41,499 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,499 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,500 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= ULTIMATE.start_main_~y~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (let ((.cse12 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~a~0 .cse12) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~x~0 .cse12) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~k~0 1) .cse9 .cse10 .cse11)))) [2021-10-28 23:10:41,500 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,500 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= ULTIMATE.start_main_~y~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (let ((.cse12 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~a~0 .cse12) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~x~0 .cse12) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~k~0 1) .cse9 .cse10 .cse11)))) [2021-10-28 23:10:41,500 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,500 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= ULTIMATE.start_main_~y~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (let ((.cse12 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~a~0 .cse12) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~x~0 .cse12) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~k~0 1) .cse9 .cse10 .cse11)))) [2021-10-28 23:10:41,501 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,501 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= ULTIMATE.start_main_~y~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (let ((.cse12 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~a~0 .cse12) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~x~0 .cse12) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~k~0 1) .cse9 .cse10 .cse11)))) [2021-10-28 23:10:41,501 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,501 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,501 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:10:41,502 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (and (< (* 2 ULTIMATE.start_main_~c~0) 1) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~p~0 0) (<= 0 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~r~0 1) (< (* 2 ULTIMATE.start_main_~b~0) 1) (<= 1 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 1)) [2021-10-28 23:10:41,502 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:10:41,502 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-28 23:10:41,502 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-28 23:10:41,502 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,502 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,503 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= ULTIMATE.start_main_~y~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (let ((.cse0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0))) (and (= ULTIMATE.start_main_~a~0 .cse0) .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~x~0 .cse0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~k~0 1) .cse9 .cse10 .cse11)) (and .cse1 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11))) [2021-10-28 23:10:41,504 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-28 23:10:41,504 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,504 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-10-28 23:10:41,504 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-28 23:10:41,504 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-28 23:10:41,504 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-28 23:10:41,505 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-28 23:10:41,505 INFO L857 garLoopResultBuilder]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2021-10-28 23:10:41,505 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:10:41,505 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,505 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,506 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse0 (< (* 2 ULTIMATE.start_main_~c~0) 1)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (<= ULTIMATE.start_main_~a~0 1)) (.cse5 (<= ULTIMATE.start_main_~y~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) .cse2 (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= (+ ULTIMATE.start_main_~s~0 1) 0) .cse1 (<= 0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~p~0 0) .cse2 (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) (< (* 2 ULTIMATE.start_main_~b~0) 1) .cse3 (< (div (+ (- 1) (* ULTIMATE.start_main_~x~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1)) (< ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) .cse4 .cse5))) [2021-10-28 23:10:41,506 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point L8-8(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,509 INFO L857 garLoopResultBuilder]: For program point L8-10(line 8) no Hoare annotation was computed. [2021-10-28 23:10:41,510 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-28 23:10:41,510 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:10:41,514 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:41,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:10:41,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:10:41 BoogieIcfgContainer [2021-10-28 23:10:41,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:10:41,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:10:41,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:10:41,589 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:10:41,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:23" (3/4) ... [2021-10-28 23:10:41,594 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:10:41,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-28 23:10:41,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:10:41,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:10:41,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:10:41,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:10:41,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:10:41,686 INFO L168 Benchmark]: Toolchain (without parser) took 18853.62 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 68.6 MB in the beginning and 133.4 MB in the end (delta: -64.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,686 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:41,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.30 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 73.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.87 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:41,688 INFO L168 Benchmark]: Boogie Preprocessor took 60.47 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,688 INFO L168 Benchmark]: RCFGBuilder took 522.56 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 58.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,689 INFO L168 Benchmark]: TraceAbstraction took 17641.80 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 58.0 MB in the beginning and 137.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 95.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,689 INFO L168 Benchmark]: Witness Printer took 94.81 ms. Allocated memory is still 167.8 MB. Free memory was 136.5 MB in the beginning and 133.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:41,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 55.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 448.30 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 73.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.87 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.47 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 522.56 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 58.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17641.80 ms. Allocated memory was 98.6 MB in the beginning and 167.8 MB in the end (delta: 69.2 MB). Free memory was 58.0 MB in the beginning and 137.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 95.8 MB. Max. memory is 16.1 GB. * Witness Printer took 94.81 ms. Allocated memory is still 167.8 MB. Free memory was 136.5 MB in the beginning and 133.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 17.4s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 1138 SDslu, 1086 SDs, 0 SdLazy, 1233 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=8, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 144 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 24 NumberOfFragments, 669 HoareAnnotationTreeSize, 9 FomulaSimplifications, 814 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 439 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 325 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 3419 SizeOfPredicates, 107 NumberOfNonLiveVariables, 1450 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 8/45 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= c) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) || ((((((((((((((a == c + b && cond == 1) && p == 1) && 1 == cond) && x <= c + b) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && k == 1) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= c) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) || ((((((((((((((a == c + b && cond == 1) && p == 1) && 1 == cond) && x <= c + b) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && k == 1) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((a == c + b && cond == 1) && p == 1) && 1 == cond) && x <= c + b) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && k == 1) && a <= 1) && y <= 1) && b == y) || ((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 <= c) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= c) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) || ((((((((((((((a == c + b && cond == 1) && p == 1) && 1 == cond) && x <= c + b) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && k == 1) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((2 * c < 1 && cond == 1) && 0 <= b) && p == 0) && 0 <= c) && 1 <= y) && r == 1) && 2 * b < 1) && 1 <= x) && x < 2 * a) && a <= 1) && y <= 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= c) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) || ((((((((((((((a == c + b && cond == 1) && p == 1) && 1 == cond) && x <= c + b) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && k == 1) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((2 * c < 1 && cond == 1) && a == x) && p == 1) && 0 <= c) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) || (((((((((((((2 * c < 1 && s + 1 == 0) && cond == 1) && 0 <= b) && p == 0) && 0 <= c) && r == 1) && q == 1) && 2 * b < 1) && 1 <= x) && (-1 + x * -1) / -2 < y + 1) && x < 2 * a) && a <= 1) && y <= 1) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:10:41,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bf7724-e42a-4dce-90ee-3f1edf6c73e4/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...