./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.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_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/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_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/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_289aaaec-ec35-4911-a7a8-f71c54dfe769/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 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:26:06,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:26:06,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:26:06,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:26:06,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:26:06,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:26:06,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:26:06,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:26:06,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:26:06,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:26:06,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:26:06,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:26:06,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:26:06,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:26:06,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:26:06,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:26:06,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:26:06,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:26:06,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:26:06,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:26:06,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:26:06,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:26:06,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:26:06,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:26:06,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:26:06,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:26:06,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:26:06,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:26:06,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:26:06,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:26:06,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:26:06,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:26:06,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:26:06,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:26:06,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:26:06,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:26:06,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:26:06,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:26:06,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:26:06,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:26:06,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:26:06,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:26:06,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:26:06,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:26:06,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:26:06,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:26:06,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:26:06,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:26:06,575 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:26:06,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:26:06,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:26:06,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:26:06,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:26:06,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:26:06,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:26:06,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:26:06,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:26:06,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:26:06,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:26:06,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:26:06,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:26:06,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:26:06,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:26:06,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:26:06,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:06,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:26:06,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:26:06,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:26:06,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:26:06,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:26:06,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:26:06,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:26:06,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:26:06,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:26:06,587 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_289aaaec-ec35-4911-a7a8-f71c54dfe769/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c [2021-10-28 23:26:06,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:26:06,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:26:06,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:26:06,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:26:06,939 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:26:06,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2021-10-28 23:26:07,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/data/d51ec8beb/0b6c123ba459473f895a025ea749c964/FLAGaca1271c0 [2021-10-28 23:26:07,578 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:26:07,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2021-10-28 23:26:07,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/data/d51ec8beb/0b6c123ba459473f895a025ea749c964/FLAGaca1271c0 [2021-10-28 23:26:07,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/data/d51ec8beb/0b6c123ba459473f895a025ea749c964 [2021-10-28 23:26:07,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:26:07,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:26:07,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:07,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:26:07,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:26:07,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:07" (1/1) ... [2021-10-28 23:26:07,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecc0655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:07, skipping insertion in model container [2021-10-28 23:26:07,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:07" (1/1) ... [2021-10-28 23:26:07,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:26:07,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:26:08,164 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_289aaaec-ec35-4911-a7a8-f71c54dfe769/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c[490,503] [2021-10-28 23:26:08,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:08,207 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:26:08,222 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_289aaaec-ec35-4911-a7a8-f71c54dfe769/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c[490,503] [2021-10-28 23:26:08,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:08,250 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:26:08,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08 WrapperNode [2021-10-28 23:26:08,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:08,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:26:08,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:26:08,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:26:08,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:26:08,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:26:08,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:26:08,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:26:08,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:26:08,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:26:08,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:26:08,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:26:08,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (1/1) ... [2021-10-28 23:26:08,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:08,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:26:08,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:26:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:26:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:26:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:26:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:26:08,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:26:08,837 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-28 23:26:08,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:08 BoogieIcfgContainer [2021-10-28 23:26:08,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:26:08,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:26:08,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:26:08,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:26:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:26:07" (1/3) ... [2021-10-28 23:26:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd07cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:08, skipping insertion in model container [2021-10-28 23:26:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:08" (2/3) ... [2021-10-28 23:26:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd07cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:08, skipping insertion in model container [2021-10-28 23:26:08,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:08" (3/3) ... [2021-10-28 23:26:08,854 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2021-10-28 23:26:08,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:26:08,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 23:26:08,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:26:08,981 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:26:08,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 23:26:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:26:09,006 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:09,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:09,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times [2021-10-28 23:26:09,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:09,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137493637] [2021-10-28 23:26:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:09,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:09,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:09,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137493637] [2021-10-28 23:26:09,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137493637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:09,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:09,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:26:09,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372911204] [2021-10-28 23:26:09,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:26:09,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:09,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:26:09,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:26:09,304 INFO L87 Difference]: Start difference. First operand has 43 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 23:26:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:09,335 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-10-28 23:26:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:26:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 23:26:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:09,347 INFO L225 Difference]: With dead ends: 83 [2021-10-28 23:26:09,348 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 23:26:09,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:26:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 23:26:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-28 23:26:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-28 23:26:09,399 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2021-10-28 23:26:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:09,400 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-28 23:26:09,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 23:26:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-28 23:26:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:26:09,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:09,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:09,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:26:09,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2021-10-28 23:26:09,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:09,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25181411] [2021-10-28 23:26:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:09,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:09,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:09,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017880976] [2021-10-28 23:26:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:09,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:09,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:09,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:26:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:09,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:26:09,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:09,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:09,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25181411] [2021-10-28 23:26:09,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:09,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017880976] [2021-10-28 23:26:09,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017880976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:09,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:09,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:26:09,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546907344] [2021-10-28 23:26:09,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:26:09,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:26:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:26:09,746 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:09,787 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-10-28 23:26:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:26:09,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 23:26:09,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:09,789 INFO L225 Difference]: With dead ends: 49 [2021-10-28 23:26:09,790 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:26:09,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 23:26:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:26:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 23:26:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-28 23:26:09,799 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2021-10-28 23:26:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:09,799 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-28 23:26:09,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-28 23:26:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:26:09,801 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:09,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:09,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:10,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:10,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2021-10-28 23:26:10,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:10,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811388341] [2021-10-28 23:26:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:10,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:10,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:10,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455627183] [2021-10-28 23:26:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:10,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:10,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:26:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:10,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:26:10,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:10,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:10,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811388341] [2021-10-28 23:26:10,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:10,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455627183] [2021-10-28 23:26:10,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455627183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:10,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:10,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:26:10,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293311643] [2021-10-28 23:26:10,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:10,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:10,282 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:10,378 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-10-28 23:26:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:26:10,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 23:26:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:10,380 INFO L225 Difference]: With dead ends: 69 [2021-10-28 23:26:10,384 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:26:10,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:26:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-10-28 23:26:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.25) internal successors, (45), 41 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 23:26:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-10-28 23:26:10,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2021-10-28 23:26:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:10,400 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-10-28 23:26:10,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-10-28 23:26:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:26:10,402 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:10,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:10,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:10,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:10,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2021-10-28 23:26:10,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:10,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742042043] [2021-10-28 23:26:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:10,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:10,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:10,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744018951] [2021-10-28 23:26:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:10,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:10,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:10,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:26:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:10,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:26:10,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:10,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:10,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742042043] [2021-10-28 23:26:10,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:10,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744018951] [2021-10-28 23:26:10,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744018951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:10,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:10,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:26:10,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617679663] [2021-10-28 23:26:10,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:10,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:10,991 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 23:26:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:11,207 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-10-28 23:26:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:26:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-28 23:26:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:11,210 INFO L225 Difference]: With dead ends: 80 [2021-10-28 23:26:11,210 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 23:26:11,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 23:26:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2021-10-28 23:26:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-10-28 23:26:11,236 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2021-10-28 23:26:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:11,237 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-10-28 23:26:11,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 23:26:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-10-28 23:26:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:26:11,238 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:11,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:11,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:11,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:11,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2021-10-28 23:26:11,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:11,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977131820] [2021-10-28 23:26:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:11,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:11,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:11,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126430828] [2021-10-28 23:26:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:11,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:11,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:11,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:26:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:11,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:26:11,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:11,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:11,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977131820] [2021-10-28 23:26:11,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:11,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126430828] [2021-10-28 23:26:11,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126430828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:11,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:11,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:26:11,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605242122] [2021-10-28 23:26:11,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:26:11,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:26:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:26:11,774 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:11,833 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-10-28 23:26:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:26:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 23:26:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:11,835 INFO L225 Difference]: With dead ends: 64 [2021-10-28 23:26:11,835 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 23:26:11,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 23:26:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 23:26:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-10-28 23:26:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 54 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 23:26:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-10-28 23:26:11,844 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2021-10-28 23:26:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:11,845 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-10-28 23:26:11,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-10-28 23:26:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:26:11,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:11,846 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:11,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:12,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:12,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2021-10-28 23:26:12,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:12,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784508540] [2021-10-28 23:26:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:12,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:12,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:12,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162592229] [2021-10-28 23:26:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:12,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:12,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:12,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:12,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:26:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:12,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:26:12,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:12,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:12,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784508540] [2021-10-28 23:26:12,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:12,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162592229] [2021-10-28 23:26:12,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162592229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:12,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:12,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:26:12,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263694207] [2021-10-28 23:26:12,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:12,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:12,319 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:12,353 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-10-28 23:26:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:26:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 23:26:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:12,356 INFO L225 Difference]: With dead ends: 85 [2021-10-28 23:26:12,356 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 23:26:12,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 23:26:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-28 23:26:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-28 23:26:12,376 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2021-10-28 23:26:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:12,376 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 23:26:12,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-28 23:26:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:26:12,378 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:12,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:12,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:12,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:12,592 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:12,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2021-10-28 23:26:12,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:12,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253569768] [2021-10-28 23:26:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:12,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:12,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:12,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111445398] [2021-10-28 23:26:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:12,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:12,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:12,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:26:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:12,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:26:12,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:13,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:13,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253569768] [2021-10-28 23:26:13,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:13,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111445398] [2021-10-28 23:26:13,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111445398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:13,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:13,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:26:13,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497554988] [2021-10-28 23:26:13,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:26:13,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:26:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:13,048 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:13,175 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-10-28 23:26:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:26:13,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 23:26:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:13,177 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:26:13,178 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 23:26:13,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 23:26:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-10-28 23:26:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 54 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 23:26:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-10-28 23:26:13,186 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2021-10-28 23:26:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:13,186 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-10-28 23:26:13,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-10-28 23:26:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:26:13,188 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:13,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:13,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:13,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:13,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:13,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2021-10-28 23:26:13,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:13,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810910955] [2021-10-28 23:26:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:13,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:13,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:13,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694923638] [2021-10-28 23:26:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:13,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:13,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:13,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:13,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:26:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:13,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:26:13,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:13,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:13,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810910955] [2021-10-28 23:26:13,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:13,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694923638] [2021-10-28 23:26:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694923638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:13,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:13,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:26:13,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523959304] [2021-10-28 23:26:13,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:13,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:13,941 INFO L87 Difference]: Start difference. First operand 55 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 23:26:14,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:14,013 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-10-28 23:26:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:26:14,014 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 23:26:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:14,015 INFO L225 Difference]: With dead ends: 67 [2021-10-28 23:26:14,015 INFO L226 Difference]: Without dead ends: 65 [2021-10-28 23:26:14,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-28 23:26:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-10-28 23:26:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 23:26:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-10-28 23:26:14,031 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2021-10-28 23:26:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:14,031 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-10-28 23:26:14,031 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 23:26:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-10-28 23:26:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:26:14,032 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:14,032 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:14,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:14,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2021-10-28 23:26:14,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:14,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289628298] [2021-10-28 23:26:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:14,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:14,260 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:14,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043362899] [2021-10-28 23:26:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:14,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:14,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:26:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:14,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:26:14,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:14,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:14,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289628298] [2021-10-28 23:26:14,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:14,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043362899] [2021-10-28 23:26:14,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043362899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:14,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:14,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:26:14,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783855287] [2021-10-28 23:26:14,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:14,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:14,531 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 23:26:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:14,630 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2021-10-28 23:26:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:26:14,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-28 23:26:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:14,633 INFO L225 Difference]: With dead ends: 108 [2021-10-28 23:26:14,633 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 23:26:14,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 23:26:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-10-28 23:26:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 77 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-10-28 23:26:14,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 26 [2021-10-28 23:26:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:14,646 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-10-28 23:26:14,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 23:26:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-10-28 23:26:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:26:14,650 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:14,650 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:14,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:14,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:14,864 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2021-10-28 23:26:14,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:14,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407355765] [2021-10-28 23:26:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:14,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:14,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:14,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712255030] [2021-10-28 23:26:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:14,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:14,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:14,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:26:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:15,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:26:15,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:15,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:15,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407355765] [2021-10-28 23:26:15,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:15,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712255030] [2021-10-28 23:26:15,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712255030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:15,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:15,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:26:15,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112555991] [2021-10-28 23:26:15,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:26:15,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:15,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:26:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:15,116 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 23:26:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:15,142 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-10-28 23:26:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:26:15,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-28 23:26:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:15,143 INFO L225 Difference]: With dead ends: 89 [2021-10-28 23:26:15,143 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 23:26:15,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 23:26:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-10-28 23:26:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 80 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 23:26:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-10-28 23:26:15,151 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 28 [2021-10-28 23:26:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:15,152 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-10-28 23:26:15,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 23:26:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-10-28 23:26:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:26:15,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:15,153 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:15,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:15,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:26:15,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -134066994, now seen corresponding path program 1 times [2021-10-28 23:26:15,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:15,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014187488] [2021-10-28 23:26:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:15,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:15,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:15,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868572417] [2021-10-28 23:26:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:15,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:15,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:15,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:26:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:15,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:26:15,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:15,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:15,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014187488] [2021-10-28 23:26:15,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:15,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868572417] [2021-10-28 23:26:15,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868572417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:15,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:15,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:26:15,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246433287] [2021-10-28 23:26:15,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:15,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:15,683 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 23:26:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:15,884 INFO L93 Difference]: Finished difference Result 232 states and 266 transitions. [2021-10-28 23:26:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 29 [2021-10-28 23:26:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:15,886 INFO L225 Difference]: With dead ends: 232 [2021-10-28 23:26:15,886 INFO L226 Difference]: Without dead ends: 224 [2021-10-28 23:26:15,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:26:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-28 23:26:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2021-10-28 23:26:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.353846153846154) internal successors, (176), 135 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 23:26:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2021-10-28 23:26:15,905 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 29 [2021-10-28 23:26:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:15,907 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2021-10-28 23:26:15,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 23:26:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2021-10-28 23:26:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:26:15,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:15,910 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:15,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:16,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:16,124 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash 966792015, now seen corresponding path program 1 times [2021-10-28 23:26:16,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:16,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384424604] [2021-10-28 23:26:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:16,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:16,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:16,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312872904] [2021-10-28 23:26:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:16,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:16,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:16,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:26:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:16,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:26:16,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:16,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:16,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384424604] [2021-10-28 23:26:16,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:16,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312872904] [2021-10-28 23:26:16,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312872904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:16,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:16,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:26:16,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746324009] [2021-10-28 23:26:16,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:26:16,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:26:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:16,462 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:16,502 INFO L93 Difference]: Finished difference Result 179 states and 228 transitions. [2021-10-28 23:26:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:26:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-28 23:26:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:16,505 INFO L225 Difference]: With dead ends: 179 [2021-10-28 23:26:16,505 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 23:26:16,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 23:26:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-28 23:26:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 135 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 23:26:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2021-10-28 23:26:16,524 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 30 [2021-10-28 23:26:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:16,525 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2021-10-28 23:26:16,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2021-10-28 23:26:16,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:26:16,526 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:16,526 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:16,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:16,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 23:26:16,740 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash 302394158, now seen corresponding path program 1 times [2021-10-28 23:26:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:16,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917805583] [2021-10-28 23:26:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:16,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:16,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:16,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516296413] [2021-10-28 23:26:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:16,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:16,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:16,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:16,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 23:26:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:17,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:26:17,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:17,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:17,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917805583] [2021-10-28 23:26:17,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:17,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516296413] [2021-10-28 23:26:17,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516296413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:17,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:17,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 23:26:17,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841082020] [2021-10-28 23:26:17,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:17,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:17,430 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 23:26:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:17,713 INFO L93 Difference]: Finished difference Result 173 states and 219 transitions. [2021-10-28 23:26:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:26:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 23:26:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:17,715 INFO L225 Difference]: With dead ends: 173 [2021-10-28 23:26:17,715 INFO L226 Difference]: Without dead ends: 171 [2021-10-28 23:26:17,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:26:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-28 23:26:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2021-10-28 23:26:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 159 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 23:26:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2021-10-28 23:26:17,734 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 32 [2021-10-28 23:26:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:17,734 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2021-10-28 23:26:17,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 23:26:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2021-10-28 23:26:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:26:17,735 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:17,735 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:17,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:17,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:26:17,953 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2001825622, now seen corresponding path program 1 times [2021-10-28 23:26:17,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:17,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216295438] [2021-10-28 23:26:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:17,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:17,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:17,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468478117] [2021-10-28 23:26:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:17,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:17,971 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:18,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 23:26:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:18,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:26:18,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:18,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:18,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216295438] [2021-10-28 23:26:18,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:18,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468478117] [2021-10-28 23:26:18,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468478117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:18,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:18,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:26:18,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892125538] [2021-10-28 23:26:18,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:18,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:18,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:18,364 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 23:26:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:18,417 INFO L93 Difference]: Finished difference Result 269 states and 355 transitions. [2021-10-28 23:26:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:26:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 23:26:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:18,420 INFO L225 Difference]: With dead ends: 269 [2021-10-28 23:26:18,420 INFO L226 Difference]: Without dead ends: 171 [2021-10-28 23:26:18,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-28 23:26:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-10-28 23:26:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.3374233128834356) internal successors, (218), 168 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 23:26:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2021-10-28 23:26:18,446 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 34 [2021-10-28 23:26:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:18,447 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2021-10-28 23:26:18,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 23:26:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2021-10-28 23:26:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:26:18,448 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:18,449 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:18,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:18,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 23:26:18,664 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1456833039, now seen corresponding path program 1 times [2021-10-28 23:26:18,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:18,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496116013] [2021-10-28 23:26:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:18,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:18,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:18,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359594461] [2021-10-28 23:26:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:18,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:18,686 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 23:26:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:18,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-28 23:26:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:20,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:20,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496116013] [2021-10-28 23:26:20,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:20,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359594461] [2021-10-28 23:26:20,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359594461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:20,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:20,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 23:26:20,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90995168] [2021-10-28 23:26:20,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:26:20,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:26:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:20,089 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 23:26:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:20,407 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2021-10-28 23:26:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:26:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 23:26:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:20,410 INFO L225 Difference]: With dead ends: 180 [2021-10-28 23:26:20,410 INFO L226 Difference]: Without dead ends: 178 [2021-10-28 23:26:20,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:26:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-28 23:26:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 169. [2021-10-28 23:26:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.3251533742331287) internal successors, (216), 168 states have internal predecessors, (216), 0 states have call successors, (0), 0 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 23:26:20,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2021-10-28 23:26:20,436 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 34 [2021-10-28 23:26:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:20,437 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2021-10-28 23:26:20,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 23:26:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2021-10-28 23:26:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:26:20,438 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:20,439 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, 1, 1, 1] [2021-10-28 23:26:20,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:20,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:26:20,664 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash 142945620, now seen corresponding path program 1 times [2021-10-28 23:26:20,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:20,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600009985] [2021-10-28 23:26:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:20,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:20,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:20,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540608162] [2021-10-28 23:26:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:20,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:20,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:20,683 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:20,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 23:26:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:21,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-28 23:26:21,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:22,628 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 23:26:22,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:22,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600009985] [2021-10-28 23:26:22,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:22,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540608162] [2021-10-28 23:26:22,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540608162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:22,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:22,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 23:26:22,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903823643] [2021-10-28 23:26:22,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:26:22,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:26:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:22,631 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:23,348 INFO L93 Difference]: Finished difference Result 197 states and 248 transitions. [2021-10-28 23:26:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:26:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 23:26:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:23,350 INFO L225 Difference]: With dead ends: 197 [2021-10-28 23:26:23,350 INFO L226 Difference]: Without dead ends: 195 [2021-10-28 23:26:23,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:26:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-28 23:26:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 169. [2021-10-28 23:26:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.312883435582822) internal successors, (214), 168 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 23:26:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2021-10-28 23:26:23,369 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 36 [2021-10-28 23:26:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:23,369 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2021-10-28 23:26:23,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2021-10-28 23:26:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:26:23,370 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:23,370 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:23,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:23,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:23,584 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1084150885, now seen corresponding path program 2 times [2021-10-28 23:26:23,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:23,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439656774] [2021-10-28 23:26:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:23,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:23,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:23,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536801526] [2021-10-28 23:26:23,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:23,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:23,609 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:26:23,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:23,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:23,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 23:26:23,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:24,341 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 23:26:24,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:24,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439656774] [2021-10-28 23:26:24,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:24,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536801526] [2021-10-28 23:26:24,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536801526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:24,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:24,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:26:24,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087283179] [2021-10-28 23:26:24,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:26:24,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:24,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:26:24,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:26:24,343 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:24,607 INFO L93 Difference]: Finished difference Result 184 states and 229 transitions. [2021-10-28 23:26:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:26:24,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 23:26:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:24,610 INFO L225 Difference]: With dead ends: 184 [2021-10-28 23:26:24,610 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:26:24,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:26:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:26:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2021-10-28 23:26:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.3109756097560976) internal successors, (215), 169 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 23:26:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2021-10-28 23:26:24,631 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 36 [2021-10-28 23:26:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:24,631 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2021-10-28 23:26:24,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2021-10-28 23:26:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:26:24,632 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:24,632 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:24,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:24,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 23:26:24,848 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:24,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1970211809, now seen corresponding path program 1 times [2021-10-28 23:26:24,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:24,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292646756] [2021-10-28 23:26:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:24,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:24,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:24,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666727567] [2021-10-28 23:26:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:24,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:24,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:24,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:26:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:26:25,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:25,497 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 23:26:25,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:25,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292646756] [2021-10-28 23:26:25,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:25,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666727567] [2021-10-28 23:26:25,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666727567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:25,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:25,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:26:25,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990266372] [2021-10-28 23:26:25,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:25,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:25,500 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 23:26:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:25,571 INFO L93 Difference]: Finished difference Result 181 states and 226 transitions. [2021-10-28 23:26:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:26:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 23:26:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:25,573 INFO L225 Difference]: With dead ends: 181 [2021-10-28 23:26:25,573 INFO L226 Difference]: Without dead ends: 173 [2021-10-28 23:26:25,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-28 23:26:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-28 23:26:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.3053892215568863) internal successors, (218), 172 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 23:26:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 218 transitions. [2021-10-28 23:26:25,605 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 218 transitions. Word has length 38 [2021-10-28 23:26:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:25,605 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 218 transitions. [2021-10-28 23:26:25,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 23:26:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 218 transitions. [2021-10-28 23:26:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:26:25,606 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:25,606 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, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:25,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:25,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:26:25,823 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash -947205511, now seen corresponding path program 1 times [2021-10-28 23:26:25,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:25,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695393320] [2021-10-28 23:26:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:25,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:25,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:25,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120445337] [2021-10-28 23:26:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:25,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:25,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:25,842 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:25,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 23:26:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:26,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-28 23:26:26,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:27,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:27,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695393320] [2021-10-28 23:26:27,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:27,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120445337] [2021-10-28 23:26:27,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120445337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:27,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:27,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 23:26:27,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189700375] [2021-10-28 23:26:27,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:26:27,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:26:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:27,396 INFO L87 Difference]: Start difference. First operand 173 states and 218 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:27,964 INFO L93 Difference]: Finished difference Result 217 states and 269 transitions. [2021-10-28 23:26:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:26:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-28 23:26:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:27,966 INFO L225 Difference]: With dead ends: 217 [2021-10-28 23:26:27,966 INFO L226 Difference]: Without dead ends: 213 [2021-10-28 23:26:27,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:26:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-28 23:26:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 199. [2021-10-28 23:26:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.3212435233160622) internal successors, (255), 198 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 23:26:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 255 transitions. [2021-10-28 23:26:27,988 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 255 transitions. Word has length 39 [2021-10-28 23:26:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:27,988 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 255 transitions. [2021-10-28 23:26:27,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 255 transitions. [2021-10-28 23:26:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 23:26:27,990 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:27,990 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:28,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:28,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:28,212 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 268729372, now seen corresponding path program 1 times [2021-10-28 23:26:28,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:28,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6286779] [2021-10-28 23:26:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:28,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:28,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:28,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836265446] [2021-10-28 23:26:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:28,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:28,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:28,233 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 23:26:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:28,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:26:28,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:26:29,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:29,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6286779] [2021-10-28 23:26:29,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:29,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836265446] [2021-10-28 23:26:29,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836265446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:29,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:29,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:26:29,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626037798] [2021-10-28 23:26:29,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:29,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:29,122 INFO L87 Difference]: Start difference. First operand 199 states and 255 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:29,396 INFO L93 Difference]: Finished difference Result 247 states and 311 transitions. [2021-10-28 23:26:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:26:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 23:26:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:29,398 INFO L225 Difference]: With dead ends: 247 [2021-10-28 23:26:29,398 INFO L226 Difference]: Without dead ends: 239 [2021-10-28 23:26:29,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:29,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-28 23:26:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 226. [2021-10-28 23:26:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.3227272727272728) internal successors, (291), 225 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 23:26:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2021-10-28 23:26:29,425 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 41 [2021-10-28 23:26:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:29,425 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2021-10-28 23:26:29,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2021-10-28 23:26:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 23:26:29,426 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:29,426 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:29,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-28 23:26:29,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:29,652 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 170255994, now seen corresponding path program 2 times [2021-10-28 23:26:29,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:29,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560588704] [2021-10-28 23:26:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:29,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:29,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:29,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077070154] [2021-10-28 23:26:29,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:29,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:29,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:29,692 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:29,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:26:30,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:30,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:30,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:26:30,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:30,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:30,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560588704] [2021-10-28 23:26:30,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:30,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077070154] [2021-10-28 23:26:30,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077070154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:30,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:30,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:26:30,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158813302] [2021-10-28 23:26:30,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:30,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:30,435 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:30,531 INFO L93 Difference]: Finished difference Result 250 states and 317 transitions. [2021-10-28 23:26:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-28 23:26:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:30,534 INFO L225 Difference]: With dead ends: 250 [2021-10-28 23:26:30,534 INFO L226 Difference]: Without dead ends: 240 [2021-10-28 23:26:30,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-28 23:26:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-10-28 23:26:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.3090128755364807) internal successors, (305), 238 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 23:26:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 305 transitions. [2021-10-28 23:26:30,561 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 305 transitions. Word has length 42 [2021-10-28 23:26:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:30,561 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 305 transitions. [2021-10-28 23:26:30,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 305 transitions. [2021-10-28 23:26:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 23:26:30,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:30,562 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:30,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:30,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:30,788 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1229525663, now seen corresponding path program 1 times [2021-10-28 23:26:30,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:30,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338124964] [2021-10-28 23:26:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:30,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:30,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:30,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323963197] [2021-10-28 23:26:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:30,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:30,812 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:26:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:31,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:26:31,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:31,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:31,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338124964] [2021-10-28 23:26:31,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:31,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323963197] [2021-10-28 23:26:31,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323963197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:31,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:31,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 23:26:31,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867830100] [2021-10-28 23:26:31,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:31,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:31,530 INFO L87 Difference]: Start difference. First operand 239 states and 305 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:31,621 INFO L93 Difference]: Finished difference Result 368 states and 482 transitions. [2021-10-28 23:26:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 23:26:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:31,624 INFO L225 Difference]: With dead ends: 368 [2021-10-28 23:26:31,624 INFO L226 Difference]: Without dead ends: 241 [2021-10-28 23:26:31,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-10-28 23:26:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-10-28 23:26:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 235 states have (on average 1.297872340425532) internal successors, (305), 240 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 23:26:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 305 transitions. [2021-10-28 23:26:31,652 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 305 transitions. Word has length 44 [2021-10-28 23:26:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 305 transitions. [2021-10-28 23:26:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 305 transitions. [2021-10-28 23:26:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 23:26:31,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:31,654 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:31,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 23:26:31,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 23:26:31,880 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -613640578, now seen corresponding path program 2 times [2021-10-28 23:26:31,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:31,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787467906] [2021-10-28 23:26:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:31,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:31,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:31,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257245213] [2021-10-28 23:26:31,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:31,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:31,913 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:26:32,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:32,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:32,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:26:32,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:32,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:32,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787467906] [2021-10-28 23:26:32,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:32,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257245213] [2021-10-28 23:26:32,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257245213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:32,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:32,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 23:26:32,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141866407] [2021-10-28 23:26:32,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:26:32,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:26:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:32,649 INFO L87 Difference]: Start difference. First operand 241 states and 305 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:32,725 INFO L93 Difference]: Finished difference Result 304 states and 383 transitions. [2021-10-28 23:26:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:26:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-28 23:26:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:32,727 INFO L225 Difference]: With dead ends: 304 [2021-10-28 23:26:32,727 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:26:32,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:26:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:26:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2021-10-28 23:26:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 1.1323529411764706) internal successors, (154), 139 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 23:26:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-10-28 23:26:32,747 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 46 [2021-10-28 23:26:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:32,747 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-10-28 23:26:32,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-10-28 23:26:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 23:26:32,748 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:32,748 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:32,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:32,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 23:26:32,976 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2041640631, now seen corresponding path program 1 times [2021-10-28 23:26:32,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:32,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131034496] [2021-10-28 23:26:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:32,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:32,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:32,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42921771] [2021-10-28 23:26:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:32,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:32,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:32,999 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:33,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 23:26:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:33,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 23:26:33,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:35,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:35,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131034496] [2021-10-28 23:26:35,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:35,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42921771] [2021-10-28 23:26:35,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42921771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:35,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:35,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 23:26:35,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838448037] [2021-10-28 23:26:35,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:35,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:35,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:35,406 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:36,264 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2021-10-28 23:26:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-28 23:26:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:36,266 INFO L225 Difference]: With dead ends: 144 [2021-10-28 23:26:36,266 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 23:26:36,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:26:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 23:26:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-10-28 23:26:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.125925925925926) internal successors, (152), 137 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 23:26:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2021-10-28 23:26:36,286 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 46 [2021-10-28 23:26:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:36,287 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2021-10-28 23:26:36,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2021-10-28 23:26:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 23:26:36,288 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:36,288 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:36,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:36,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:36,500 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1100435366, now seen corresponding path program 3 times [2021-10-28 23:26:36,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:36,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024730146] [2021-10-28 23:26:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:36,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:36,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:36,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046007721] [2021-10-28 23:26:36,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:26:36,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:36,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:36,542 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:36,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 23:26:37,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 23:26:37,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 23:26:37,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 23:26:37,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:37,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024730146] [2021-10-28 23:26:37,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:37,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046007721] [2021-10-28 23:26:37,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046007721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:37,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:37,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:26:37,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841644162] [2021-10-28 23:26:37,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:37,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:37,426 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 23:26:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:37,520 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2021-10-28 23:26:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:26:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 46 [2021-10-28 23:26:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:37,522 INFO L225 Difference]: With dead ends: 138 [2021-10-28 23:26:37,522 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 23:26:37,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:26:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 23:26:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-10-28 23:26:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 135 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 23:26:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-10-28 23:26:37,553 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 46 [2021-10-28 23:26:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:37,553 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-10-28 23:26:37,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 23:26:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-10-28 23:26:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 23:26:37,555 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:37,555 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:37,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:37,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:37,772 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1842911238, now seen corresponding path program 2 times [2021-10-28 23:26:37,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:37,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733884605] [2021-10-28 23:26:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:37,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:37,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:37,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516935932] [2021-10-28 23:26:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:37,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:37,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:37,795 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:37,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 23:26:38,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:38,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:38,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:26:38,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:26:38,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:38,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733884605] [2021-10-28 23:26:38,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:38,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516935932] [2021-10-28 23:26:38,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516935932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:38,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:38,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:26:38,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039551314] [2021-10-28 23:26:38,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:26:38,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:26:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:38,701 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:38,801 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions. [2021-10-28 23:26:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:26:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-28 23:26:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:38,803 INFO L225 Difference]: With dead ends: 180 [2021-10-28 23:26:38,803 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 23:26:38,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 23:26:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 127. [2021-10-28 23:26:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.104) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 23:26:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-10-28 23:26:38,825 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 48 [2021-10-28 23:26:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:38,825 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-10-28 23:26:38,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-10-28 23:26:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 23:26:38,827 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:38,827 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:38,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:39,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 23:26:39,045 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash -316772764, now seen corresponding path program 2 times [2021-10-28 23:26:39,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:39,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319265232] [2021-10-28 23:26:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:39,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:39,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:39,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032831676] [2021-10-28 23:26:39,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:39,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:39,059 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:26:39,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:39,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-28 23:26:39,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:41,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:41,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319265232] [2021-10-28 23:26:41,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:26:41,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032831676] [2021-10-28 23:26:41,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032831676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:41,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:26:41,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:26:41,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071237063] [2021-10-28 23:26:41,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:26:41,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:26:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:26:41,316 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:42,461 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-10-28 23:26:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:26:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-28 23:26:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:42,462 INFO L225 Difference]: With dead ends: 135 [2021-10-28 23:26:42,462 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 23:26:42,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:26:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 23:26:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-10-28 23:26:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 1.1031746031746033) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 23:26:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-10-28 23:26:42,482 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 49 [2021-10-28 23:26:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:42,483 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-10-28 23:26:42,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:26:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-10-28 23:26:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:26:42,484 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:42,484 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:42,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:42,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 23:26:42,700 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 23:26:42,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -231890065, now seen corresponding path program 2 times [2021-10-28 23:26:42,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:42,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733764302] [2021-10-28 23:26:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:42,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:42,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:26:42,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672470901] [2021-10-28 23:26:42,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:42,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:42,726 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:42,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:26:43,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:43,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-28 23:26:43,585 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:26:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:26:43,673 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:26:43,673 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:26:43,674 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,676 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,677 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,677 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,677 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,678 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:26:43,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:43,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:26:43,895 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:43,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:26:43,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:26:43 BoogieIcfgContainer [2021-10-28 23:26:43,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:26:43,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:26:43,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:26:43,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:26:43,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:08" (3/4) ... [2021-10-28 23:26:43,974 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:26:44,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:26:44,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:26:44,046 INFO L168 Benchmark]: Toolchain (without parser) took 36117.43 ms. Allocated memory was 115.3 MB in the beginning and 201.3 MB in the end (delta: 86.0 MB). Free memory was 84.7 MB in the beginning and 72.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 98.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,046 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:26:44,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.70 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 88.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,048 INFO L168 Benchmark]: Boogie Preprocessor took 72.90 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:26:44,048 INFO L168 Benchmark]: RCFGBuilder took 458.08 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 73.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,049 INFO L168 Benchmark]: TraceAbstraction took 35129.56 ms. Allocated memory was 115.3 MB in the beginning and 201.3 MB in the end (delta: 86.0 MB). Free memory was 73.2 MB in the beginning and 76.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,049 INFO L168 Benchmark]: Witness Printer took 73.30 ms. Allocated memory is still 201.3 MB. Free memory was 76.7 MB in the beginning and 72.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:44,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.70 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 88.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.90 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 458.08 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 73.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35129.56 ms. Allocated memory was 115.3 MB in the beginning and 201.3 MB in the end (delta: 86.0 MB). Free memory was 73.2 MB in the beginning and 76.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 84.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.30 ms. Allocated memory is still 201.3 MB. Free memory was 76.7 MB in the beginning and 72.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=3] [L46] EXPR counter++ VAL [counter=4] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [counter=4] [L46] EXPR counter++ VAL [counter=5] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L51] COND TRUE !(c >= b) VAL [counter=5] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=5] [L40] EXPR counter++ VAL [counter=6] [L40] COND FALSE !(counter++<5) [L11] COND TRUE !(cond) VAL [counter=6] [L13] reach_error() VAL [counter=6] - UnprovableResult [Line: 13]: 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: 13]: 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: 13]: 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: 13]: 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: 13]: 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, 43 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 34.9s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1067 SDtfs, 1505 SDslu, 3187 SDs, 0 SdLazy, 2394 SolverSat, 240 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=22, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 321 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 914 NumberOfCodeBlocks, 894 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 835 ConstructedInterpolants, 0 QuantifiedInterpolants, 7010 SizeOfPredicates, 189 NumberOfNonLiveVariables, 4038 ConjunctsInSsa, 484 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 122/313 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 23:26:44,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289aaaec-ec35-4911-a7a8-f71c54dfe769/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...