./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/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 820aaba80b9c7e4ca2ad4a6a908bac2e6f59545dc6a131cb9fae6306b993a9eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:57:55,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:57:55,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:57:55,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:57:55,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:57:55,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:57:55,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:57:55,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:57:55,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:57:55,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:57:55,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:57:55,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:57:55,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:57:55,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:57:55,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:57:55,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:57:55,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:57:55,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:57:55,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:57:55,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:57:55,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:57:55,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:57:55,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:57:55,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:57:55,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:57:55,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:57:55,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:57:55,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:57:55,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:57:55,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:57:55,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:57:55,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:57:55,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:57:55,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:57:55,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:57:55,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:57:55,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:57:55,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:57:55,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:57:55,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:57:55,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:57:55,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:57:55,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:57:55,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:57:55,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:57:55,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:57:55,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:57:55,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:57:55,409 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:57:55,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:57:55,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:57:55,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:57:55,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:57:55,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:57:55,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:57:55,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:57:55,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:57:55,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:57:55,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:57:55,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:57:55,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:57:55,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:57:55,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:57:55,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:57:55,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:57:55,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:57:55,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:57:55,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:57:55,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:57:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:57:55,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:57:55,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:57:55,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:57:55,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:57:55,417 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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820aaba80b9c7e4ca2ad4a6a908bac2e6f59545dc6a131cb9fae6306b993a9eb [2021-10-28 22:57:55,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:57:55,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:57:55,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:57:55,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:57:55,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:57:55,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-10-28 22:57:55,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/data/b984e1a9f/72435ed79a82429582c84ded349d1e94/FLAG1ba9b4ba6 [2021-10-28 22:57:56,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:57:56,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-10-28 22:57:56,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/data/b984e1a9f/72435ed79a82429582c84ded349d1e94/FLAG1ba9b4ba6 [2021-10-28 22:57:56,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/data/b984e1a9f/72435ed79a82429582c84ded349d1e94 [2021-10-28 22:57:56,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:57:56,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:57:56,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:57:56,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:57:56,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:57:56,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:56" (1/1) ... [2021-10-28 22:57:56,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86fdb6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:56, skipping insertion in model container [2021-10-28 22:57:56,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:56" (1/1) ... [2021-10-28 22:57:56,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:57:56,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:57:57,122 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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] [2021-10-28 22:57:57,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:57:57,178 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:57:57,191 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_f7b5ec5c-3d45-431f-80b8-904a6ec28135/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] [2021-10-28 22:57:57,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:57:57,226 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:57:57,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57 WrapperNode [2021-10-28 22:57:57,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:57:57,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:57:57,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:57:57,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:57:57,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:57:57,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:57:57,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:57:57,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:57:57,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:57:57,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:57:57,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:57:57,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:57:57,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2021-10-28 22:57:57,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:57:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:57:57,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:57:57,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:57:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:57:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:57:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:57:57,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:57:57,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:57:57,819 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 22:57:57,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:57:57 BoogieIcfgContainer [2021-10-28 22:57:57,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:57:57,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:57:57,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:57:57,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:57:57,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:57:56" (1/3) ... [2021-10-28 22:57:57,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677d3ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:57:57, skipping insertion in model container [2021-10-28 22:57:57,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (2/3) ... [2021-10-28 22:57:57,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677d3ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:57:57, skipping insertion in model container [2021-10-28 22:57:57,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:57:57" (3/3) ... [2021-10-28 22:57:57,830 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound20.c [2021-10-28 22:57:57,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:57:57,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 22:57:57,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:57:57,946 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 22:57:57,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 22:57:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 22:57:57,973 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:57:57,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:57:57,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:57:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:57:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 22:57:57,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:57:57,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150954534] [2021-10-28 22:57:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:58,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:57:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:57:58,380 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 22:57:58,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:57:58,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150954534] [2021-10-28 22:57:58,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150954534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:57:58,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:57:58,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:57:58,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681267515] [2021-10-28 22:57:58,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:57:58,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:57:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:57:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:57:58,412 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 22:57:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:57:58,635 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-10-28 22:57:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:57:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 22:57:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:57:58,649 INFO L225 Difference]: With dead ends: 101 [2021-10-28 22:57:58,649 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 22:57:58,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:57:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 22:57:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-10-28 22:57:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-28 22:57:58,707 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-10-28 22:57:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:57:58,709 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-28 22:57:58,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 22:57:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-28 22:57:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:57:58,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:57:58,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:57:58,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:57:58,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:57:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:57:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 22:57:58,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:57:58,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238605098] [2021-10-28 22:57:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:58,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:57:58,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:57:58,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527005400] [2021-10-28 22:57:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:58,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:57:58,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:57:58,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:57:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:57:58,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:57:58,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:57:59,031 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 22:57:59,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:57:59,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238605098] [2021-10-28 22:57:59,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:57:59,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527005400] [2021-10-28 22:57:59,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527005400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:57:59,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:57:59,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:57:59,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578826585] [2021-10-28 22:57:59,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:57:59,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:57:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:57:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:57:59,051 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:57:59,184 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-28 22:57:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:57:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 22:57:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:57:59,189 INFO L225 Difference]: With dead ends: 86 [2021-10-28 22:57:59,190 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 22:57:59,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:57:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 22:57:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-28 22:57:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-10-28 22:57:59,223 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-10-28 22:57:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:57:59,224 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-10-28 22:57:59,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-10-28 22:57:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:57:59,227 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:57:59,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:57:59,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:59,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:59,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:57:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:57:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-10-28 22:57:59,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:57:59,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354916466] [2021-10-28 22:57:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:59,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:57:59,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:57:59,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254037376] [2021-10-28 22:57:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:59,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:59,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:57:59,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:57:59,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:57:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:57:59,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:57:59,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:57:59,582 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 22:57:59,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:57:59,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354916466] [2021-10-28 22:57:59,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:57:59,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254037376] [2021-10-28 22:57:59,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254037376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:57:59,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:57:59,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:57:59,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937992785] [2021-10-28 22:57:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:57:59,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:57:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:57:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:57:59,587 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:57:59,632 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-28 22:57:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:57:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 22:57:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:57:59,633 INFO L225 Difference]: With dead ends: 71 [2021-10-28 22:57:59,633 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 22:57:59,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:57:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 22:57:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 22:57:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-28 22:57:59,642 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-10-28 22:57:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:57:59,642 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-28 22:57:59,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:57:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-28 22:57:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:57:59,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:57:59,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:57:59,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 22:57:59,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:59,865 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:57:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:57:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 22:57:59,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:57:59,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50803884] [2021-10-28 22:57:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:59,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:57:59,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:57:59,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606016328] [2021-10-28 22:57:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:57:59,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:59,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:57:59,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:57:59,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:57:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:57:59,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:57:59,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:00,091 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 22:58:00,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:00,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50803884] [2021-10-28 22:58:00,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:00,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606016328] [2021-10-28 22:58:00,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606016328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:00,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:00,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:00,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693463851] [2021-10-28 22:58:00,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:00,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:00,098 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:00,235 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-28 22:58:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 22:58:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:00,237 INFO L225 Difference]: With dead ends: 84 [2021-10-28 22:58:00,237 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 22:58:00,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 22:58:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 22:58:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-28 22:58:00,252 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-10-28 22:58:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-28 22:58:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-28 22:58:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:58:00,254 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:00,254 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:00,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:00,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:00,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-10-28 22:58:00,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:00,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296962585] [2021-10-28 22:58:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:00,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:00,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:00,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939186986] [2021-10-28 22:58:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:00,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:00,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:00,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 22:58:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:00,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:58:00,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:00,735 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 22:58:00,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:00,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296962585] [2021-10-28 22:58:00,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:00,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939186986] [2021-10-28 22:58:00,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939186986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:00,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:00,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:00,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605569369] [2021-10-28 22:58:00,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:00,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:00,740 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 22:58:00,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:00,872 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-10-28 22:58:00,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:00,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-28 22:58:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:00,874 INFO L225 Difference]: With dead ends: 83 [2021-10-28 22:58:00,874 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 22:58:00,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 22:58:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-28 22:58:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 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 22:58:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-10-28 22:58:00,883 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-10-28 22:58:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:00,884 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-10-28 22:58:00,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 22:58:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-10-28 22:58:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:58:00,885 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:00,886 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:00,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:01,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:01,103 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-10-28 22:58:01,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:01,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236605898] [2021-10-28 22:58:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:01,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:01,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:01,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050497375] [2021-10-28 22:58:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:01,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:01,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:01,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 22:58:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:01,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:58:01,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:01,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:01,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236605898] [2021-10-28 22:58:01,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:01,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050497375] [2021-10-28 22:58:01,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050497375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:01,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:01,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:58:01,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367166508] [2021-10-28 22:58:01,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:01,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:01,516 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22:58:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:01,726 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-28 22:58:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22:58:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:01,728 INFO L225 Difference]: With dead ends: 99 [2021-10-28 22:58:01,728 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 22:58:01,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 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 22:58:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 22:58:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2021-10-28 22:58:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2115384615384615) 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 22:58:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 22:58:01,744 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2021-10-28 22:58:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:01,745 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 22:58:01,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22:58:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 22:58:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:58:01,747 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:01,747 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] [2021-10-28 22:58:01,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 22:58:01,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 22:58:01,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-10-28 22:58:01,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:01,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752412900] [2021-10-28 22:58:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:01,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:01,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:01,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558364933] [2021-10-28 22:58:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:01,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:01,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:01,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 22:58:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:02,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 22:58:02,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:02,165 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 22:58:02,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:02,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752412900] [2021-10-28 22:58:02,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:02,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558364933] [2021-10-28 22:58:02,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558364933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:02,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:02,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 22:58:02,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517417978] [2021-10-28 22:58:02,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:02,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:02,173 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:02,204 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-28 22:58:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 22:58:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:02,206 INFO L225 Difference]: With dead ends: 83 [2021-10-28 22:58:02,207 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 22:58:02,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 22:58:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 22:58:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1923076923076923) 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 22:58:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-28 22:58:02,227 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2021-10-28 22:58:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:02,228 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-28 22:58:02,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-28 22:58:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 22:58:02,229 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:02,229 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:02,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:02,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 22:58:02,444 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-10-28 22:58:02,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:02,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884178788] [2021-10-28 22:58:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:02,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:02,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:02,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065923227] [2021-10-28 22:58:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:02,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:02,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:02,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:02,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 22:58:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:02,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:58:02,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:02,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:02,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884178788] [2021-10-28 22:58:02,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:02,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065923227] [2021-10-28 22:58:02,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065923227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:02,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:02,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:58:02,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738040990] [2021-10-28 22:58:02,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:02,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:02,869 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 22:58:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:03,033 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-28 22:58:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 22:58:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:03,042 INFO L225 Difference]: With dead ends: 96 [2021-10-28 22:58:03,042 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 22:58:03,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 22:58:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 22:58:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-10-28 22:58:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-10-28 22:58:03,058 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2021-10-28 22:58:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:03,064 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-10-28 22:58:03,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 22:58:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-10-28 22:58:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 22:58:03,065 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:03,066 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:03,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 22:58:03,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:03,291 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-10-28 22:58:03,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:03,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681602541] [2021-10-28 22:58:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:03,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:03,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:03,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237308319] [2021-10-28 22:58:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:03,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:03,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:03,312 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:03,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 22:58:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 22:58:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:03,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:03,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681602541] [2021-10-28 22:58:03,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:03,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237308319] [2021-10-28 22:58:03,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237308319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:03,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:03,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:58:03,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023736366] [2021-10-28 22:58:03,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:03,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:03,800 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 22:58:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:04,047 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-10-28 22:58:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 22:58:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:04,049 INFO L225 Difference]: With dead ends: 97 [2021-10-28 22:58:04,049 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 22:58:04,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 22:58:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 22:58:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-10-28 22:58:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-28 22:58:04,076 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2021-10-28 22:58:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:04,076 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-28 22:58:04,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 22:58:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-28 22:58:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 22:58:04,077 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:04,078 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:04,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:04,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:04,306 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-10-28 22:58:04,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:04,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226425930] [2021-10-28 22:58:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:04,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:04,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:04,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849097567] [2021-10-28 22:58:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:04,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:04,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:04,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 22:58:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 22:58:04,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:05,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:05,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226425930] [2021-10-28 22:58:05,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:05,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849097567] [2021-10-28 22:58:05,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849097567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:05,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:05,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:58:05,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970334252] [2021-10-28 22:58:05,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:05,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:05,757 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:06,093 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-10-28 22:58:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:06,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 22:58:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:06,094 INFO L225 Difference]: With dead ends: 78 [2021-10-28 22:58:06,095 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 22:58:06,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:58:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 22:58:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-28 22:58:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 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 22:58:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-28 22:58:06,106 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2021-10-28 22:58:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:06,106 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-28 22:58:06,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-28 22:58:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 22:58:06,108 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:06,108 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 22:58:06,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:06,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:06,330 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-10-28 22:58:06,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:06,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263441789] [2021-10-28 22:58:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:06,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:06,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:06,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676551131] [2021-10-28 22:58:06,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:06,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:06,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:06,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:06,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 22:58:06,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:58:06,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:06,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 22:58:06,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:06,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:06,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263441789] [2021-10-28 22:58:06,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:06,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676551131] [2021-10-28 22:58:06,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676551131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:06,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:06,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:58:06,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23104084] [2021-10-28 22:58:06,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:06,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:06,941 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 22:58:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:07,311 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2021-10-28 22:58:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-28 22:58:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:07,313 INFO L225 Difference]: With dead ends: 119 [2021-10-28 22:58:07,313 INFO L226 Difference]: Without dead ends: 117 [2021-10-28 22:58:07,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-28 22:58:07,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2021-10-28 22:58:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 78 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:58:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-10-28 22:58:07,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 32 [2021-10-28 22:58:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:07,326 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-10-28 22:58:07,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 22:58:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-10-28 22:58:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 22:58:07,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:07,328 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:07,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:07,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:07,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-10-28 22:58:07,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:07,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056055181] [2021-10-28 22:58:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:07,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:07,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:07,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221264416] [2021-10-28 22:58:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:07,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:07,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 22:58:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:58:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:08,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:08,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056055181] [2021-10-28 22:58:08,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:08,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221264416] [2021-10-28 22:58:08,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221264416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:08,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:58:08,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365425902] [2021-10-28 22:58:08,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:08,407 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:08,973 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-28 22:58:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 22:58:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:08,974 INFO L225 Difference]: With dead ends: 82 [2021-10-28 22:58:08,975 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 22:58:08,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 22:58:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-10-28 22:58:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.171875) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-10-28 22:58:08,983 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 33 [2021-10-28 22:58:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:08,983 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-10-28 22:58:08,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-10-28 22:58:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 22:58:08,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:08,985 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:09,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:09,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 22:58:09,210 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-10-28 22:58:09,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:09,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258081410] [2021-10-28 22:58:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:09,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:09,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:09,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863155082] [2021-10-28 22:58:09,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:09,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:09,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:09,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 22:58:09,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:58:09,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:09,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:58:09,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:09,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:09,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258081410] [2021-10-28 22:58:09,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:09,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863155082] [2021-10-28 22:58:09,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863155082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:09,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:09,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:58:09,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631075860] [2021-10-28 22:58:09,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:09,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:09,612 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:09,644 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-10-28 22:58:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 22:58:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:09,645 INFO L225 Difference]: With dead ends: 95 [2021-10-28 22:58:09,646 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 22:58:09,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 22:58:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 22:58:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.15625) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 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 22:58:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-28 22:58:09,666 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 33 [2021-10-28 22:58:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:09,666 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-28 22:58:09,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-28 22:58:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 22:58:09,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:09,667 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 22:58:09,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:09,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 22:58:09,868 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:09,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-10-28 22:58:09,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:09,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596383255] [2021-10-28 22:58:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:09,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:09,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:09,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781041471] [2021-10-28 22:58:09,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:09,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:09,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:09,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:09,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 22:58:10,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:58:10,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:10,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 22:58:10,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:10,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:10,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596383255] [2021-10-28 22:58:10,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:10,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781041471] [2021-10-28 22:58:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781041471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:10,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:58:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384098031] [2021-10-28 22:58:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:58:10,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:58:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:10,769 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:58:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:11,394 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-10-28 22:58:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:58:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 22:58:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:11,396 INFO L225 Difference]: With dead ends: 111 [2021-10-28 22:58:11,396 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 22:58:11,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:58:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 22:58:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2021-10-28 22:58:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 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 22:58:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-28 22:58:11,410 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-10-28 22:58:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:11,410 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-28 22:58:11,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:58:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-28 22:58:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 22:58:11,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:11,412 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 22:58:11,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:11,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 22:58:11,626 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 2 times [2021-10-28 22:58:11,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:11,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614726594] [2021-10-28 22:58:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:11,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:11,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:11,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433111243] [2021-10-28 22:58:11,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:11,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:11,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:11,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 22:58:12,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 22:58:12,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:12,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:58:12,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 22:58:15,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:15,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614726594] [2021-10-28 22:58:15,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:15,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433111243] [2021-10-28 22:58:15,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433111243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:15,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:15,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 22:58:15,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517467581] [2021-10-28 22:58:15,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:58:15,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:58:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:15,590 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:58:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:38,354 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-10-28 22:58:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 22:58:38,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 36 [2021-10-28 22:58:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:38,356 INFO L225 Difference]: With dead ends: 75 [2021-10-28 22:58:38,356 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 22:58:38,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=57, Invalid=151, Unknown=2, NotChecked=0, Total=210 [2021-10-28 22:58:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 22:58:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 22:58:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 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 22:58:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-28 22:58:38,366 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 36 [2021-10-28 22:58:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:38,367 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-28 22:58:38,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:58:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-28 22:58:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 22:58:38,368 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:38,368 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-28 22:58:38,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:38,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 22:58:38,588 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1913398790, now seen corresponding path program 1 times [2021-10-28 22:58:38,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:38,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088496281] [2021-10-28 22:58:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:38,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:38,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:38,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384252986] [2021-10-28 22:58:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:38,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:38,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:38,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 22:58:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:39,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 22:58:39,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:39,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088496281] [2021-10-28 22:58:39,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:39,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384252986] [2021-10-28 22:58:39,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384252986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:39,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:39,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:58:39,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037913629] [2021-10-28 22:58:39,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:58:39,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:58:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:39,520 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 22:58:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:39,788 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2021-10-28 22:58:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:58:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 22:58:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:39,790 INFO L225 Difference]: With dead ends: 105 [2021-10-28 22:58:39,790 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:58:39,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:58:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:58:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2021-10-28 22:58:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.144736842105263) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 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 22:58:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2021-10-28 22:58:39,806 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 38 [2021-10-28 22:58:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:39,806 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2021-10-28 22:58:39,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 22:58:39,807 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2021-10-28 22:58:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 22:58:39,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:39,809 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:39,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:40,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 22:58:40,010 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-10-28 22:58:40,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:40,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593752576] [2021-10-28 22:58:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:40,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:40,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:40,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124386791] [2021-10-28 22:58:40,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:40,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:40,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:40,031 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:40,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 22:58:40,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:58:40,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:40,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 22:58:40,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:41,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:41,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593752576] [2021-10-28 22:58:41,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:41,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124386791] [2021-10-28 22:58:41,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124386791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:41,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:41,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 22:58:41,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032573909] [2021-10-28 22:58:41,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:58:41,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:58:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:41,239 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:41,756 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2021-10-28 22:58:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:58:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-28 22:58:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:41,757 INFO L225 Difference]: With dead ends: 88 [2021-10-28 22:58:41,757 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 22:58:41,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:58:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 22:58:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-10-28 22:58:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.131578947368421) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 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 22:58:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2021-10-28 22:58:41,768 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 43 [2021-10-28 22:58:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:41,768 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2021-10-28 22:58:41,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2021-10-28 22:58:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 22:58:41,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:41,770 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-10-28 22:58:41,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:41,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:41,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2021-10-28 22:58:41,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:41,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599787465] [2021-10-28 22:58:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:41,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:41,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:41,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240258485] [2021-10-28 22:58:41,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:58:41,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:41,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:41,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:41,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 22:58:42,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 22:58:42,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:42,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 22:58:42,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:58:43,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:43,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599787465] [2021-10-28 22:58:43,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:43,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240258485] [2021-10-28 22:58:43,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240258485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:43,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:43,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 22:58:43,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941228495] [2021-10-28 22:58:43,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:58:43,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:58:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:58:43,153 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 22:58:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:43,872 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2021-10-28 22:58:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:43,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 44 [2021-10-28 22:58:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:43,874 INFO L225 Difference]: With dead ends: 84 [2021-10-28 22:58:43,874 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 22:58:43,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:58:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 22:58:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:58:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.095890410958904) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-10-28 22:58:43,888 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 44 [2021-10-28 22:58:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:43,889 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-10-28 22:58:43,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 22:58:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-10-28 22:58:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 22:58:43,891 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:43,891 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:43,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:44,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 22:58:44,103 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 22:58:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-10-28 22:58:44,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:44,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682917858] [2021-10-28 22:58:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:44,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:44,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:44,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126199426] [2021-10-28 22:58:44,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:44,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:44,144 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:44,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 22:58:46,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 22:58:46,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:46,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 22:58:46,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 22:58:58,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:58,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682917858] [2021-10-28 22:58:58,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:58,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126199426] [2021-10-28 22:58:58,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126199426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:58,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:58,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 22:58:58,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032630378] [2021-10-28 22:58:58,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:58:58,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:58:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:58:58,750 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 22:59:40,165 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-10-28 23:00:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:28,364 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-10-28 23:00:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:00:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 45 [2021-10-28 23:00:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:28,365 INFO L225 Difference]: With dead ends: 94 [2021-10-28 23:00:28,365 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 23:00:28,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=126, Invalid=250, Unknown=4, NotChecked=0, Total=380 [2021-10-28 23:00:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 23:00:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-28 23:00:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-10-28 23:00:28,375 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 45 [2021-10-28 23:00:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:28,375 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-10-28 23:00:28,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:00:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-10-28 23:00:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 23:00:28,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:28,376 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:28,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-28 23:00:28,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:28,581 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1070984318, now seen corresponding path program 3 times [2021-10-28 23:00:28,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:28,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650398277] [2021-10-28 23:00:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:28,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:28,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:28,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705898649] [2021-10-28 23:00:28,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:00:28,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:28,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:28,611 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:28,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 23:00:29,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:00:29,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:29,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:00:29,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:29,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:29,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650398277] [2021-10-28 23:00:29,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:29,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705898649] [2021-10-28 23:00:29,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705898649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:29,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:29,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:00:29,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490316000] [2021-10-28 23:00:29,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:00:29,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:00:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:00:29,397 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:29,439 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2021-10-28 23:00:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:00:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 23:00:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:29,440 INFO L225 Difference]: With dead ends: 76 [2021-10-28 23:00:29,440 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 23:00:29,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:00:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 23:00:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-28 23:00:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:00:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-10-28 23:00:29,453 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 45 [2021-10-28 23:00:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:29,453 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-10-28 23:00:29,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-10-28 23:00:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 23:00:29,454 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:29,454 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:29,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:29,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:29,678 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -655791985, now seen corresponding path program 3 times [2021-10-28 23:00:29,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:29,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124949045] [2021-10-28 23:00:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:29,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:29,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:29,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738598978] [2021-10-28 23:00:29,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:00:29,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:29,699 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:00:31,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 23:00:31,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:31,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:00:31,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 23:00:31,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:31,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124949045] [2021-10-28 23:00:31,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:31,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738598978] [2021-10-28 23:00:31,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738598978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:00:31,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:00:31,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:00:31,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002891346] [2021-10-28 23:00:31,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:00:31,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:00:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:00:31,947 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:00:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:34,282 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-28 23:00:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:00:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 55 [2021-10-28 23:00:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:34,283 INFO L225 Difference]: With dead ends: 68 [2021-10-28 23:00:34,283 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 23:00:34,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:00:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 23:00:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 23:00:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 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 23:00:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-28 23:00:34,295 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-10-28 23:00:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:34,295 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-28 23:00:34,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:00:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-28 23:00:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 23:00:34,296 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:34,296 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:34,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:34,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 23:00:34,497 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1986227318, now seen corresponding path program 4 times [2021-10-28 23:00:34,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:34,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502158489] [2021-10-28 23:00:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:34,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:34,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:34,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668254854] [2021-10-28 23:00:34,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:00:34,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:34,512 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:34,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:00:35,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:00:35,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:00:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:35,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:35,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502158489] [2021-10-28 23:00:35,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:35,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668254854] [2021-10-28 23:00:35,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668254854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:35,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:35,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:00:35,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744313142] [2021-10-28 23:00:35,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:00:35,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:00:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:00:35,244 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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 23:00:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:35,320 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-28 23:00:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:00:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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) Word has length 57 [2021-10-28 23:00:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:35,321 INFO L225 Difference]: With dead ends: 84 [2021-10-28 23:00:35,321 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 23:00:35,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:00:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 23:00:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 23:00:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:00:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-10-28 23:00:35,338 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 57 [2021-10-28 23:00:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-10-28 23:00:35,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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 23:00:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-10-28 23:00:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-28 23:00:35,340 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:35,340 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:35,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:35,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 23:00:35,554 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1352185966, now seen corresponding path program 5 times [2021-10-28 23:00:35,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:35,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069023018] [2021-10-28 23:00:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:35,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:35,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:35,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953670009] [2021-10-28 23:00:35,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:00:35,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:35,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:35,576 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:00:36,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 23:00:36,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:36,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:00:36,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:36,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069023018] [2021-10-28 23:00:36,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953670009] [2021-10-28 23:00:36,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953670009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:36,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:36,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 23:00:36,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852967182] [2021-10-28 23:00:36,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:00:36,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:00:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:00:36,371 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:36,434 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-10-28 23:00:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:00:36,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-28 23:00:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:36,440 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:00:36,440 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 23:00:36,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:00:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 23:00:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-28 23:00:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 0 states have call successors, (0), 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 23:00:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-10-28 23:00:36,456 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 69 [2021-10-28 23:00:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:36,456 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-10-28 23:00:36,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-10-28 23:00:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 23:00:36,458 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:36,458 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:36,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:36,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 23:00:36,670 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash 182202266, now seen corresponding path program 6 times [2021-10-28 23:00:36,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:36,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561342459] [2021-10-28 23:00:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:36,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:36,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:36,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208308780] [2021-10-28 23:00:36,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:00:36,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:36,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:36,682 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:36,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 23:00:38,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 23:00:38,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:38,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:00:38,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:38,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:38,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561342459] [2021-10-28 23:00:38,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:38,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208308780] [2021-10-28 23:00:38,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208308780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:38,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:38,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 23:00:38,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430269725] [2021-10-28 23:00:38,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:00:38,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:00:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:00:38,800 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:38,885 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-10-28 23:00:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:00:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-28 23:00:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:38,887 INFO L225 Difference]: With dead ends: 108 [2021-10-28 23:00:38,887 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 23:00:38,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:00:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 23:00:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-28 23:00:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-10-28 23:00:38,909 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 81 [2021-10-28 23:00:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:38,909 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-10-28 23:00:38,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-10-28 23:00:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 23:00:38,911 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:38,911 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:38,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-28 23:00:39,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:39,122 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 172837794, now seen corresponding path program 7 times [2021-10-28 23:00:39,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:39,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46413789] [2021-10-28 23:00:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:39,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:39,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:39,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80159803] [2021-10-28 23:00:39,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:00:39,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:39,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:39,140 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:39,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 23:00:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:00:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:00:39,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:40,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:40,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46413789] [2021-10-28 23:00:40,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:40,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80159803] [2021-10-28 23:00:40,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80159803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:40,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:40,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:00:40,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769583296] [2021-10-28 23:00:40,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:00:40,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:00:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:00:40,230 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 23:00:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:40,338 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-10-28 23:00:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:00:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-10-28 23:00:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:40,341 INFO L225 Difference]: With dead ends: 120 [2021-10-28 23:00:40,341 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:00:40,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:00:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:00:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-28 23:00:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 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 23:00:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-10-28 23:00:40,365 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 93 [2021-10-28 23:00:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:40,365 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-10-28 23:00:40,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 23:00:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-10-28 23:00:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 23:00:40,367 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:40,367 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:40,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:40,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:40,582 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash 822909866, now seen corresponding path program 8 times [2021-10-28 23:00:40,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:40,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517339534] [2021-10-28 23:00:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:40,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:40,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:40,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601127996] [2021-10-28 23:00:40,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:00:40,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:40,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:40,597 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:40,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 23:00:41,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:00:41,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:41,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:00:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:41,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:41,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517339534] [2021-10-28 23:00:41,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:41,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601127996] [2021-10-28 23:00:41,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601127996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:41,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:41,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 23:00:41,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934152835] [2021-10-28 23:00:41,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:00:41,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:41,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:00:41,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:00:41,634 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:41,750 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-10-28 23:00:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 23:00:41,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 23:00:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:41,752 INFO L225 Difference]: With dead ends: 132 [2021-10-28 23:00:41,752 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 23:00:41,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:00:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 23:00:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-28 23:00:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 0 states have call successors, (0), 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 23:00:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-10-28 23:00:41,766 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 105 [2021-10-28 23:00:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:41,767 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-10-28 23:00:41,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:41,767 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-10-28 23:00:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 23:00:41,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:41,769 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:41,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:41,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:41,982 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:41,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1754521678, now seen corresponding path program 9 times [2021-10-28 23:00:41,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:41,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532177660] [2021-10-28 23:00:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:41,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:41,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:41,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995005464] [2021-10-28 23:00:41,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:00:41,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:41,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:42,004 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:42,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:00:42,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 23:00:42,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:00:42,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:43,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:43,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532177660] [2021-10-28 23:00:43,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:43,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995005464] [2021-10-28 23:00:43,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995005464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:43,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:43,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 23:00:43,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994783458] [2021-10-28 23:00:43,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:00:43,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:00:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:00:43,286 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:43,432 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-10-28 23:00:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:00:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-28 23:00:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:43,434 INFO L225 Difference]: With dead ends: 144 [2021-10-28 23:00:43,435 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 23:00:43,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:00:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 23:00:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-28 23:00:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 0 states have call successors, (0), 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 23:00:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-28 23:00:43,491 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 117 [2021-10-28 23:00:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:43,491 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-28 23:00:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:43,492 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-28 23:00:43,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-28 23:00:43,493 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:43,493 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:43,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 23:00:43,714 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1790826426, now seen corresponding path program 10 times [2021-10-28 23:00:43,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:43,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051118441] [2021-10-28 23:00:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:43,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:43,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:43,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675963830] [2021-10-28 23:00:43,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:00:43,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:43,741 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:43,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:00:44,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:00:44,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:44,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 23:00:44,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:44,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:44,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051118441] [2021-10-28 23:00:44,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:44,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675963830] [2021-10-28 23:00:44,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675963830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:44,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:44,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:00:44,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722131603] [2021-10-28 23:00:44,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:00:44,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:00:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:00:44,974 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:45,152 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-10-28 23:00:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 23:00:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-28 23:00:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:45,154 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:00:45,154 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:00:45,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:00:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:00:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-28 23:00:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 145 states have internal predecessors, (146), 0 states have call successors, (0), 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 23:00:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-10-28 23:00:45,186 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 129 [2021-10-28 23:00:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-10-28 23:00:45,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-10-28 23:00:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 23:00:45,188 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:45,188 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:45,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:45,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:00:45,414 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1834206146, now seen corresponding path program 11 times [2021-10-28 23:00:45,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:45,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152785785] [2021-10-28 23:00:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:45,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:45,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:45,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349223138] [2021-10-28 23:00:45,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:00:45,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:45,433 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:45,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 23:00:51,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 23:00:51,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:51,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 23:00:51,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:52,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:52,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152785785] [2021-10-28 23:00:52,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:52,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349223138] [2021-10-28 23:00:52,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349223138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:52,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 23:00:52,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919242338] [2021-10-28 23:00:52,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:00:52,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:00:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:00:52,234 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 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 23:00:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:52,451 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-10-28 23:00:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 23:00:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-10-28 23:00:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:52,453 INFO L225 Difference]: With dead ends: 168 [2021-10-28 23:00:52,453 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:00:52,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:00:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:00:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-28 23:00:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 0 states have call successors, (0), 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 23:00:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-10-28 23:00:52,482 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 141 [2021-10-28 23:00:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:52,482 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-10-28 23:00:52,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 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 23:00:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-10-28 23:00:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-28 23:00:52,483 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:52,484 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:52,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:52,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 23:00:52,684 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1988092874, now seen corresponding path program 12 times [2021-10-28 23:00:52,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:52,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072109909] [2021-10-28 23:00:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:52,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:52,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:52,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280673951] [2021-10-28 23:00:52,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:00:52,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:52,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:52,700 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:52,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 23:00:53,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-28 23:00:53,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:53,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:00:53,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:54,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:54,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072109909] [2021-10-28 23:00:54,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:54,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280673951] [2021-10-28 23:00:54,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280673951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:54,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:54,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 23:00:54,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432450604] [2021-10-28 23:00:54,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:00:54,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:00:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:00:54,306 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:54,508 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-10-28 23:00:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 23:00:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-10-28 23:00:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:54,510 INFO L225 Difference]: With dead ends: 180 [2021-10-28 23:00:54,510 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 23:00:54,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:00:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 23:00:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-28 23:00:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 0 states have call successors, (0), 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 23:00:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-10-28 23:00:54,539 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 153 [2021-10-28 23:00:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:54,539 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-10-28 23:00:54,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-10-28 23:00:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-28 23:00:54,541 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:54,541 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:54,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:54,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:54,754 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash -225167406, now seen corresponding path program 13 times [2021-10-28 23:00:54,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:54,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028788925] [2021-10-28 23:00:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:54,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:54,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:54,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062079162] [2021-10-28 23:00:54,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:00:54,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:54,779 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:54,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 23:00:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:00:55,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 23:00:55,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:56,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:56,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028788925] [2021-10-28 23:00:56,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:56,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062079162] [2021-10-28 23:00:56,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062079162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:56,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:56,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 23:00:56,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239677992] [2021-10-28 23:00:56,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 23:00:56,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 23:00:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:00:56,231 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 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 23:00:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:56,428 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-10-28 23:00:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 23:00:56,429 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-10-28 23:00:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:56,430 INFO L225 Difference]: With dead ends: 192 [2021-10-28 23:00:56,430 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:00:56,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-10-28 23:00:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:00:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-28 23:00:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 0 states have call successors, (0), 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 23:00:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-10-28 23:00:56,469 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 165 [2021-10-28 23:00:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:56,469 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-10-28 23:00:56,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 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 23:00:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-10-28 23:00:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 23:00:56,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:56,471 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:56,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:56,678 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1659027418, now seen corresponding path program 14 times [2021-10-28 23:00:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827172925] [2021-10-28 23:00:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:56,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:56,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:56,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089693465] [2021-10-28 23:00:56,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:00:56,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:56,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:56,695 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:56,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 23:00:57,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:00:57,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:00:57,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:00:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:00:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:00:58,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:58,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827172925] [2021-10-28 23:00:58,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:00:58,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089693465] [2021-10-28 23:00:58,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089693465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:00:58,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:00:58,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-28 23:00:58,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044739489] [2021-10-28 23:00:58,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 23:00:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:58,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:00:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:00:58,313 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:58,545 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-10-28 23:00:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-28 23:00:58,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-28 23:00:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:58,546 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:00:58,547 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 23:00:58,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:00:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 23:00:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-28 23:00:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 0 states have call successors, (0), 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 23:00:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-10-28 23:00:58,603 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 177 [2021-10-28 23:00:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:58,603 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-10-28 23:00:58,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-10-28 23:00:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-28 23:00:58,605 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:58,605 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:00:58,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:00:58,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 23:00:58,818 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:00:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -574784542, now seen corresponding path program 15 times [2021-10-28 23:00:58,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:58,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027597032] [2021-10-28 23:00:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:58,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:58,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:00:58,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640633032] [2021-10-28 23:00:58,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:00:58,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:00:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:58,837 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:00:58,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 23:01:00,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-28 23:01:00,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:01:00,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 23:01:00,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 0 proven. 1290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:00,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:00,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027597032] [2021-10-28 23:01:00,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:01:00,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640633032] [2021-10-28 23:01:00,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640633032] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:01:00,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:01:00,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-28 23:01:00,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593914141] [2021-10-28 23:01:00,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:01:00,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:01:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:01:00,656 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 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 23:01:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:00,909 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-10-28 23:01:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-28 23:01:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2021-10-28 23:01:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:00,911 INFO L225 Difference]: With dead ends: 216 [2021-10-28 23:01:00,911 INFO L226 Difference]: Without dead ends: 206 [2021-10-28 23:01:00,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 23:01:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-28 23:01:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-10-28 23:01:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 205 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-10-28 23:01:00,956 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 189 [2021-10-28 23:01:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:00,956 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-10-28 23:01:00,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 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 23:01:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-10-28 23:01:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-28 23:01:00,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:00,958 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:00,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:01,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:01,171 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:01:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1904841750, now seen corresponding path program 16 times [2021-10-28 23:01:01,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:01,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349341351] [2021-10-28 23:01:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:01,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:01,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:01:01,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202141884] [2021-10-28 23:01:01,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:01:01,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:01,191 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:01:01,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 23:01:02,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:01:02,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:01:02,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 23:01:02,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:03,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:03,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349341351] [2021-10-28 23:01:03,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:01:03,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202141884] [2021-10-28 23:01:03,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202141884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:01:03,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:01:03,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 23:01:03,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224678305] [2021-10-28 23:01:03,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 23:01:03,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 23:01:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:01:03,055 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:03,326 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-10-28 23:01:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 23:01:03,326 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-10-28 23:01:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:03,328 INFO L225 Difference]: With dead ends: 228 [2021-10-28 23:01:03,328 INFO L226 Difference]: Without dead ends: 218 [2021-10-28 23:01:03,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 23:01:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-28 23:01:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-28 23:01:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 0 states have call successors, (0), 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 23:01:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-10-28 23:01:03,366 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 201 [2021-10-28 23:01:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:03,367 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-10-28 23:01:03,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-10-28 23:01:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-28 23:01:03,369 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:03,369 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:03,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:03,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:03,583 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:01:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash 895455218, now seen corresponding path program 17 times [2021-10-28 23:01:03,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:03,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419512147] [2021-10-28 23:01:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:03,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:03,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:01:03,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903268008] [2021-10-28 23:01:03,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:01:03,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:03,600 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:01:03,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 23:01:07,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-28 23:01:07,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:01:07,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 23:01:07,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 0 proven. 1666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:07,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:07,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419512147] [2021-10-28 23:01:07,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:01:07,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903268008] [2021-10-28 23:01:07,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903268008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:01:07,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:01:07,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-28 23:01:07,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343869789] [2021-10-28 23:01:07,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 23:01:07,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:07,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:01:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:01:07,917 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 23:01:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:08,211 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-10-28 23:01:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-28 23:01:08,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2021-10-28 23:01:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:08,213 INFO L225 Difference]: With dead ends: 240 [2021-10-28 23:01:08,214 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 23:01:08,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 23:01:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 23:01:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-10-28 23:01:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 0 states have call successors, (0), 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 23:01:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-10-28 23:01:08,259 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 213 [2021-10-28 23:01:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:08,260 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-10-28 23:01:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 23:01:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-10-28 23:01:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-28 23:01:08,262 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:08,262 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:08,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:08,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 23:01:08,474 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:01:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1479874566, now seen corresponding path program 18 times [2021-10-28 23:01:08,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:08,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449640576] [2021-10-28 23:01:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:08,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:08,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:01:08,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584203297] [2021-10-28 23:01:08,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:01:08,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:08,506 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:01:08,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 23:01:10,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-28 23:01:10,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:01:10,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 23:01:10,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:11,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:11,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449640576] [2021-10-28 23:01:11,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:01:11,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584203297] [2021-10-28 23:01:11,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584203297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:01:11,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:01:11,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-28 23:01:11,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237342392] [2021-10-28 23:01:11,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 23:01:11,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 23:01:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:01:11,195 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:11,572 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2021-10-28 23:01:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 23:01:11,573 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-10-28 23:01:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:11,575 INFO L225 Difference]: With dead ends: 252 [2021-10-28 23:01:11,575 INFO L226 Difference]: Without dead ends: 242 [2021-10-28 23:01:11,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 23:01:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-28 23:01:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-28 23:01:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 0 states have call successors, (0), 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 23:01:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-10-28 23:01:11,628 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 225 [2021-10-28 23:01:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:11,629 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-10-28 23:01:11,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:11,629 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-10-28 23:01:11,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-10-28 23:01:11,631 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:11,631 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:11,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 23:01:11,844 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:01:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1342862338, now seen corresponding path program 19 times [2021-10-28 23:01:11,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:11,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114721943] [2021-10-28 23:01:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:11,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:11,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:01:11,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179903685] [2021-10-28 23:01:11,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:01:11,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:11,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:11,877 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:01:11,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 23:01:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:13,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 23:01:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 0 proven. 2090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:14,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:14,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114721943] [2021-10-28 23:01:14,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:01:14,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179903685] [2021-10-28 23:01:14,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179903685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:01:14,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:01:14,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-28 23:01:14,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424048783] [2021-10-28 23:01:14,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:01:14,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:01:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:01:14,051 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 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 23:01:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:14,447 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-10-28 23:01:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-28 23:01:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2021-10-28 23:01:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:14,450 INFO L225 Difference]: With dead ends: 264 [2021-10-28 23:01:14,451 INFO L226 Difference]: Without dead ends: 254 [2021-10-28 23:01:14,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-10-28 23:01:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-28 23:01:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-10-28 23:01:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 0 states have call successors, (0), 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 23:01:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-10-28 23:01:14,498 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 237 [2021-10-28 23:01:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:14,498 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-10-28 23:01:14,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 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 23:01:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-10-28 23:01:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-28 23:01:14,500 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:14,501 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:14,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:14,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 23:01:14,714 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 23:01:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1385155574, now seen corresponding path program 20 times [2021-10-28 23:01:14,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:14,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518950993] [2021-10-28 23:01:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:14,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:14,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:01:14,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318632150] [2021-10-28 23:01:14,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:01:14,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:01:14,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:14,753 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:01:14,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 23:01:16,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:01:16,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-28 23:01:16,162 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:01:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:16,561 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:01:16,562 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:01:16,563 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:16,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:16,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 23:01:16,769 INFO L731 BasicCegarLoop]: Path program histogram: [20, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:16,772 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:01:16,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:01:16 BoogieIcfgContainer [2021-10-28 23:01:16,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:01:16,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:01:16,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:01:16,925 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:01:16,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:57:57" (3/4) ... [2021-10-28 23:01:16,928 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:01:17,061 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:01:17,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:01:17,063 INFO L168 Benchmark]: Toolchain (without parser) took 200159.44 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 91.9 MB in the beginning and 98.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 239.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,063 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:17,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.08 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 102.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 125.8 MB. Free memory was 102.9 MB in the beginning and 101.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:17,065 INFO L168 Benchmark]: Boogie Preprocessor took 27.24 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,065 INFO L168 Benchmark]: RCFGBuilder took 527.10 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 87.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,066 INFO L168 Benchmark]: TraceAbstraction took 199100.90 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 87.2 MB in the beginning and 67.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 218.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,066 INFO L168 Benchmark]: Witness Printer took 137.32 ms. Allocated memory is still 323.0 MB. Free memory was 67.9 MB in the beginning and 98.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:17,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.08 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 102.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 125.8 MB. Free memory was 102.9 MB in the beginning and 101.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.24 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 99.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 527.10 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 87.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 199100.90 ms. Allocated memory was 125.8 MB in the beginning and 323.0 MB in the end (delta: 197.1 MB). Free memory was 87.2 MB in the beginning and 67.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 218.7 MB. Max. memory is 16.1 GB. * Witness Printer took 137.32 ms. Allocated memory is still 323.0 MB. Free memory was 67.9 MB in the beginning and 98.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 17.1 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=11] [L33] EXPR counter++ VAL [counter=12] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=12] [L33] EXPR counter++ VAL [counter=13] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=13] [L33] EXPR counter++ VAL [counter=14] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=14] [L33] EXPR counter++ VAL [counter=15] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=15] [L33] EXPR counter++ VAL [counter=16] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=16] [L33] EXPR counter++ VAL [counter=17] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=17] [L33] EXPR counter++ VAL [counter=18] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=18] [L33] EXPR counter++ VAL [counter=19] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=19] [L33] EXPR counter++ VAL [counter=20] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=20] [L33] EXPR counter++ VAL [counter=21] [L33] COND FALSE !(counter++<20) [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND TRUE !(cond) VAL [counter=21] [L17] reach_error() VAL [counter=21] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 198.8s, OverallIterations: 38, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 122.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1012 SDtfs, 820 SDslu, 4634 SDs, 0 SdLazy, 2512 SolverSat, 449 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 87.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3165 GetRequests, 2608 SyntacticMatches, 2 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 43.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=37, InterpolantAutomatonStates: 588, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 37 MinimizatonAttempts, 221 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 16.2s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 3202 NumberOfCodeBlocks, 3106 NumberOfCodeBlocksAsserted, 146 NumberOfCheckSat, 2916 ConstructedInterpolants, 1 QuantifiedInterpolants, 13714 SizeOfPredicates, 297 NumberOfNonLiveVariables, 10355 ConjunctsInSsa, 753 ConjunctsInUnsatCore, 37 InterpolantComputations, 8 PerfectInterpolantSequences, 188/14412 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:01:17,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7b5ec5c-3d45-431f-80b8-904a6ec28135/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...