./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:07:43,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:07:43,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:07:43,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:07:43,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:07:43,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:07:43,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:07:43,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:07:43,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:07:43,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:07:43,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:07:43,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:07:43,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:07:43,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:07:43,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:07:43,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:07:43,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:07:43,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:07:43,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:07:43,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:07:43,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:07:43,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:07:43,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:07:43,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:07:43,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:07:43,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:07:43,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:07:43,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:07:43,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:07:43,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:07:43,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:07:43,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:07:43,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:07:43,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:07:43,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:07:43,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:07:43,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:07:43,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:07:43,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:07:43,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:07:43,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:07:43,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:07:43,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:07:43,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:07:43,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:07:43,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:07:43,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:07:43,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:07:43,550 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:07:43,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:07:43,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:07:43,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:07:43,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:07:43,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:07:43,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:07:43,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:07:43,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:07:43,553 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:07:43,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:07:43,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:07:43,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:07:43,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:07:43,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:07:43,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:07:43,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:07:43,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:07:43,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:07:43,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:07:43,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:07:43,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:07:43,557 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:07:43,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:07:43,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:07:43,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:07:43,558 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_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad [2021-11-23 14:07:43,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:07:43,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:07:43,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:07:43,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:07:43,829 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:07:43,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2021-11-23 14:07:43,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/data/a356d2be1/732232360ee042ad8e9f7615a96adcd0/FLAG2fd60bc67 [2021-11-23 14:07:44,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:07:44,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2021-11-23 14:07:44,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/data/a356d2be1/732232360ee042ad8e9f7615a96adcd0/FLAG2fd60bc67 [2021-11-23 14:07:44,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/data/a356d2be1/732232360ee042ad8e9f7615a96adcd0 [2021-11-23 14:07:44,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:07:44,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:07:44,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:07:44,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:07:44,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:07:44,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:44" (1/1) ... [2021-11-23 14:07:44,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359f1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:44, skipping insertion in model container [2021-11-23 14:07:44,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:44" (1/1) ... [2021-11-23 14:07:44,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:07:44,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:07:45,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c[458,471] [2021-11-23 14:07:45,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:07:45,119 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:07:45,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c[458,471] [2021-11-23 14:07:45,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:07:45,177 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:07:45,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45 WrapperNode [2021-11-23 14:07:45,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:07:45,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:07:45,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:07:45,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:07:45,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,224 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2021-11-23 14:07:45,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:07:45,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:07:45,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:07:45,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:07:45,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:07:45,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:07:45,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:07:45,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:07:45,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (1/1) ... [2021-11-23 14:07:45,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:07:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:45,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:07:45,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:07:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:07:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:07:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:07:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:07:45,431 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:07:45,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:07:45,609 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:07:45,616 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:07:45,616 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:07:45,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:45 BoogieIcfgContainer [2021-11-23 14:07:45,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:07:45,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:07:45,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:07:45,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:07:45,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:44" (1/3) ... [2021-11-23 14:07:45,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52239f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:45, skipping insertion in model container [2021-11-23 14:07:45,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:45" (2/3) ... [2021-11-23 14:07:45,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52239f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:45, skipping insertion in model container [2021-11-23 14:07:45,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:45" (3/3) ... [2021-11-23 14:07:45,628 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound10.c [2021-11-23 14:07:45,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:07:45,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 14:07:45,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:07:45,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:07:45,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 14:07:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 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) [2021-11-23 14:07:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 14:07:45,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:45,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:45,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash 120151435, now seen corresponding path program 1 times [2021-11-23 14:07:45,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:45,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019319768] [2021-11-23 14:07:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:45,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:45,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019319768] [2021-11-23 14:07:45,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019319768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:45,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:45,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:07:45,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658512272] [2021-11-23 14:07:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:45,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:07:45,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:07:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:07:45,959 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:45,975 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-11-23 14:07:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:07:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 14:07:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:45,985 INFO L225 Difference]: With dead ends: 43 [2021-11-23 14:07:45,985 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 14:07:45,988 INFO L932 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 [2021-11-23 14:07:45,992 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:45,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:46,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 14:07:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 14:07:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.25) internal successors, (20), 18 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) [2021-11-23 14:07:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-23 14:07:46,026 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2021-11-23 14:07:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:46,027 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-23 14:07:46,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-23 14:07:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 14:07:46,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:46,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:46,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:07:46,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-11-23 14:07:46,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928998540] [2021-11-23 14:07:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:46,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:46,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:46,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220735293] [2021-11-23 14:07:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:46,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:46,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:46,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:07:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:46,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 14:07:46,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:46,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:07:46,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928998540] [2021-11-23 14:07:46,320 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220735293] [2021-11-23 14:07:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220735293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:46,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:07:46,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986647401] [2021-11-23 14:07:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:46,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:07:46,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:07:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:07:46,324 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:46,441 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-23 14:07:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:07:46,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 14:07:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:46,442 INFO L225 Difference]: With dead ends: 38 [2021-11-23 14:07:46,443 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 14:07:46,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:07:46,445 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:46,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:07:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 14:07:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-23 14:07:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-23 14:07:46,454 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8 [2021-11-23 14:07:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:46,454 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-23 14:07:46,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-23 14:07:46,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 14:07:46,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:46,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:46,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:46,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:46,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash 888723645, now seen corresponding path program 1 times [2021-11-23 14:07:46,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440729501] [2021-11-23 14:07:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:46,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:46,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146351319] [2021-11-23 14:07:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:46,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:46,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:46,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:46,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:07:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:46,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 14:07:46,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:46,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:07:47,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:47,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440729501] [2021-11-23 14:07:47,679 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:47,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146351319] [2021-11-23 14:07:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146351319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:47,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:07:47,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-23 14:07:47,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920751210] [2021-11-23 14:07:47,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:47,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:07:47,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:07:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:07:47,683 INFO L87 Difference]: Start difference. First operand 24 states and 25 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) [2021-11-23 14:07:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:47,839 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-23 14:07:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 14:07:47,840 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 13 [2021-11-23 14:07:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:47,841 INFO L225 Difference]: With dead ends: 35 [2021-11-23 14:07:47,841 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 14:07:47,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:07:47,844 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:47,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:07:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 14:07:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2021-11-23 14:07:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-23 14:07:47,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-11-23 14:07:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:47,852 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-23 14:07:47,852 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) [2021-11-23 14:07:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-23 14:07:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 14:07:47,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:47,854 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:47,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:48,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:48,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:48,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1746872147, now seen corresponding path program 1 times [2021-11-23 14:07:48,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:48,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560745892] [2021-11-23 14:07:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:48,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:48,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709089273] [2021-11-23 14:07:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:48,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:48,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:48,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:07:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:48,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 14:07:48,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:48,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:48,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560745892] [2021-11-23 14:07:48,272 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709089273] [2021-11-23 14:07:48,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709089273] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:48,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:07:48,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-23 14:07:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287191450] [2021-11-23 14:07:48,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:48,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 14:07:48,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 14:07:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:07:48,275 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:48,334 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-11-23 14:07:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 14:07:48,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 14:07:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:48,336 INFO L225 Difference]: With dead ends: 50 [2021-11-23 14:07:48,336 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 14:07:48,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:07:48,339 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:48,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 64 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 14:07:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2021-11-23 14:07:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 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) [2021-11-23 14:07:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-23 14:07:48,350 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2021-11-23 14:07:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:48,350 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-23 14:07:48,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-23 14:07:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 14:07:48,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:48,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:48,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:48,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1783069641, now seen corresponding path program 1 times [2021-11-23 14:07:48,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:48,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850356599] [2021-11-23 14:07:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:48,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:48,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:48,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968491982] [2021-11-23 14:07:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:48,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:48,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:48,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:07:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:48,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 14:07:48,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:48,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:49,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850356599] [2021-11-23 14:07:49,249 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968491982] [2021-11-23 14:07:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968491982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:49,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:07:49,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-23 14:07:49,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102053492] [2021-11-23 14:07:49,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:49,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:07:49,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:07:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:07:49,256 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:49,369 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-23 14:07:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:07:49,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 14:07:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:49,373 INFO L225 Difference]: With dead ends: 38 [2021-11-23 14:07:49,373 INFO L226 Difference]: Without dead ends: 32 [2021-11-23 14:07:49,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:07:49,379 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:49,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2021-11-23 14:07:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-23 14:07:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-23 14:07:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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) [2021-11-23 14:07:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-23 14:07:49,398 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2021-11-23 14:07:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:49,399 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-23 14:07:49,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-23 14:07:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 14:07:49,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:49,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:49,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:49,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:49,615 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash 51604248, now seen corresponding path program 2 times [2021-11-23 14:07:49,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:49,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353800268] [2021-11-23 14:07:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:49,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:49,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328707927] [2021-11-23 14:07:49,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:07:49,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:49,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:49,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:07:49,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:07:49,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:07:49,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 14:07:49,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:49,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:50,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:50,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353800268] [2021-11-23 14:07:50,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:50,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328707927] [2021-11-23 14:07:50,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328707927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:50,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:07:50,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-23 14:07:50,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688670586] [2021-11-23 14:07:50,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:50,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 14:07:50,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 14:07:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:07:50,340 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:50,601 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-23 14:07:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 14:07:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 14:07:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:50,608 INFO L225 Difference]: With dead ends: 56 [2021-11-23 14:07:50,608 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 14:07:50,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:07:50,610 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:50,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 100 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2021-11-23 14:07:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 14:07:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-23 14:07:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 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) [2021-11-23 14:07:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-23 14:07:50,622 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 24 [2021-11-23 14:07:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:50,622 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-23 14:07:50,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-23 14:07:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 14:07:50,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:50,626 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:50,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:50,854 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1100116932, now seen corresponding path program 2 times [2021-11-23 14:07:50,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639670626] [2021-11-23 14:07:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:50,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:50,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916876521] [2021-11-23 14:07:50,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:07:50,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:50,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:50,882 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:50,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:07:50,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:07:50,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:07:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 14:07:50,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:51,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:51,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:51,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639670626] [2021-11-23 14:07:51,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:07:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916876521] [2021-11-23 14:07:51,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916876521] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:51,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:07:51,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-23 14:07:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610094548] [2021-11-23 14:07:51,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:51,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 14:07:51,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 14:07:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:07:51,197 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:51,353 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2021-11-23 14:07:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 14:07:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 14:07:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:51,357 INFO L225 Difference]: With dead ends: 92 [2021-11-23 14:07:51,357 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 14:07:51,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-11-23 14:07:51,359 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:51,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 105 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:07:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 14:07:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2021-11-23 14:07:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-11-23 14:07:51,384 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 31 [2021-11-23 14:07:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:51,384 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-11-23 14:07:51,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-11-23 14:07:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 14:07:51,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:51,392 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:51,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 14:07:51,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 14:07:51,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:07:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2091890313, now seen corresponding path program 3 times [2021-11-23 14:07:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:51,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473657556] [2021-11-23 14:07:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:51,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:51,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:07:51,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693024136] [2021-11-23 14:07:51,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:07:51,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:51,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:51,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:51,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:07:53,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-23 14:07:53,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:07:53,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 14:07:53,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:54,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:58,835 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 119 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* 18 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* 65 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ (* 120 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 .cse3) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))) (< (div (+ .cse0 12 .cse1 .cse2 .cse3) 12) (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 1)))) is different from false [2021-11-23 14:08:04,948 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 119 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* 18 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* 65 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ (* 120 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 .cse3) 12) 0)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))) (< (div (+ .cse0 12 .cse1 .cse2 .cse3) 12) (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 1)))) is different from false [2021-11-23 14:08:09,020 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))) (not (= (mod (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 6 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 5 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 12) 0))) is different from false [2021-11-23 14:08:15,084 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (mod (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (+ (* 2 .cse0 .cse0 .cse0 .cse0 .cse0 .cse0) (* (- 1) .cse0 .cse0) (* 5 .cse0 .cse0 .cse0 .cse0) (* 6 .cse0 .cse0 .cse0 .cse0 .cse0))) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (< (+ 2 |c_ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ 4 (* 4 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)))))) is different from false [2021-11-23 14:08:27,224 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (mod (let ((.cse0 (+ 2 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* (- 1) .cse0 .cse0) (* 6 .cse0 .cse0 .cse0 .cse0 .cse0) (* 5 .cse0 .cse0 .cse0 .cse0) (* 2 .cse0 .cse0 .cse0 .cse0 .cse0 .cse0))) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (< (+ 3 |c_ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|) (= (+ (* 6 |c_ULTIMATE.start_main_~y~0#1|) 9 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* 3 |ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| (+ 2 |c_ULTIMATE.start_main_~c~0#1|))))) is different from false [2021-11-23 14:08:39,987 WARN L838 $PredicateComparison]: unable to prove that (or (not (= (mod (let ((.cse0 (+ 3 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* (- 1) .cse0 .cse0) (* 2 .cse0 .cse0 .cse0 .cse0 .cse0 .cse0) (* 6 .cse0 .cse0 .cse0 .cse0 .cse0) (* 5 .cse0 .cse0 .cse0 .cse0))) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ (* 4 |ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 8 |c_ULTIMATE.start_main_~y~0#1|) 16 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 4) |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| (+ 3 |c_ULTIMATE.start_main_~c~0#1|))))) is different from false [2021-11-23 14:08:52,112 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ (* 5 |ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 10 |c_ULTIMATE.start_main_~y~0#1|) 25 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 4)) (< (+ 5 |c_ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|))) (not (= (mod (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| 4))) (+ (* 6 .cse0 .cse0 .cse0 .cse0 .cse0) (* 5 .cse0 .cse0 .cse0 .cse0) (* (- 1) .cse0 .cse0) (* 2 .cse0 .cse0 .cse0 .cse0 .cse0 .cse0))) 12) 0))) is different from false [2021-11-23 14:09:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 75 not checked. [2021-11-23 14:09:00,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473657556] [2021-11-23 14:09:00,233 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:09:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693024136] [2021-11-23 14:09:00,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693024136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:09:00,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:09:00,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-11-23 14:09:00,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221152837] [2021-11-23 14:09:00,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:09:00,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 14:09:00,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 14:09:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=254, Unknown=7, NotChecked=266, Total=600 [2021-11-23 14:09:00,236 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:09,434 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-23 14:09:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 14:09:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 14:09:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:09,437 INFO L225 Difference]: With dead ends: 68 [2021-11-23 14:09:09,437 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 14:09:09,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=158, Invalid=619, Unknown=7, NotChecked=406, Total=1190 [2021-11-23 14:09:09,439 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:09,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 184 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 152 Invalid, 0 Unknown, 242 Unchecked, 0.5s Time] [2021-11-23 14:09:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 14:09:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 14:09:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-11-23 14:09:09,451 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 39 [2021-11-23 14:09:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:09,452 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-11-23 14:09:09,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-11-23 14:09:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 14:09:09,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:09,454 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:09,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 14:09:09,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:09:09,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:09:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1919019096, now seen corresponding path program 4 times [2021-11-23 14:09:09,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634356840] [2021-11-23 14:09:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:09,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:09,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:09:09,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895753080] [2021-11-23 14:09:09,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 14:09:09,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:09:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:09:09,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:09:09,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:09:09,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 14:09:09,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:09:09,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 14:09:09,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:09:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:10,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:09:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:11,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:11,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634356840] [2021-11-23 14:09:11,040 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:09:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895753080] [2021-11-23 14:09:11,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895753080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:09:11,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:09:11,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-23 14:09:11,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944598578] [2021-11-23 14:09:11,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:09:11,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 14:09:11,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 14:09:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-23 14:09:11,043 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 19 states, 19 states have (on average 4.368421052631579) internal successors, (83), 19 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:12,132 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-11-23 14:09:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 14:09:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.368421052631579) internal successors, (83), 19 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-11-23 14:09:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:12,133 INFO L225 Difference]: With dead ends: 72 [2021-11-23 14:09:12,134 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 14:09:12,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-11-23 14:09:12,135 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:12,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 275 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 44 Unchecked, 0.6s Time] [2021-11-23 14:09:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 14:09:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 14:09:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-23 14:09:12,147 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 44 [2021-11-23 14:09:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:12,147 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-23 14:09:12,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.368421052631579) internal successors, (83), 19 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:09:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-23 14:09:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 14:09:12,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:12,149 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:12,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 14:09:12,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:09:12,358 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:09:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash 929515492, now seen corresponding path program 3 times [2021-11-23 14:09:12,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:12,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847796341] [2021-11-23 14:09:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:12,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:12,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:09:12,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260739363] [2021-11-23 14:09:12,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:09:12,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:09:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:09:12,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:09:12,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:12:43,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-23 14:12:43,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-23 14:12:43,046 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:12:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:12:47,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 14:12:47,412 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:12:47,413 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 14:12:47,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-23 14:12:47,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-23 14:12:47,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 14:12:47,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 14:12:47,641 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1] [2021-11-23 14:12:47,644 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 14:12:47,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:12:47 BoogieIcfgContainer [2021-11-23 14:12:47,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 14:12:47,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 14:12:47,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 14:12:47,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 14:12:47,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:45" (3/4) ... [2021-11-23 14:12:47,714 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 14:12:47,792 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 14:12:47,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 14:12:47,793 INFO L158 Benchmark]: Toolchain (without parser) took 302985.15ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 91.6MB in the beginning and 75.3MB in the end (delta: 16.3MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,794 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:12:47,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.60ms. Allocated memory is still 121.6MB. Free memory was 91.6MB in the beginning and 96.0MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.06ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,795 INFO L158 Benchmark]: Boogie Preprocessor took 45.03ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.6MB in the end (delta: 762.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,795 INFO L158 Benchmark]: RCFGBuilder took 348.03ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 83.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,796 INFO L158 Benchmark]: TraceAbstraction took 302090.48ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 83.4MB in the beginning and 79.5MB in the end (delta: 3.9MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,796 INFO L158 Benchmark]: Witness Printer took 81.25ms. Allocated memory is still 163.6MB. Free memory was 79.5MB in the beginning and 75.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 14:12:47,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.60ms. Allocated memory is still 121.6MB. Free memory was 91.6MB in the beginning and 96.0MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.06ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.03ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 93.6MB in the end (delta: 762.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.03ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 83.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 302090.48ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 83.4MB in the beginning and 79.5MB in the end (delta: 3.9MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Witness Printer took 81.25ms. Allocated memory is still 163.6MB. Free memory was 79.5MB in the beginning and 75.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=11, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, counter++=0, k=11, x=0, y=0] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=1, counter=1, k=11, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, counter++=1, k=11, x=1, y=1] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=2, counter=2, k=11, x=33, y=2] [L28] EXPR counter++ VAL [c=2, counter=3, counter++=2, k=11, x=33, y=2] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=3, counter=3, k=11, x=276, y=3] [L28] EXPR counter++ VAL [c=3, counter=4, counter++=3, k=11, x=276, y=3] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=4, counter=4, k=11, x=1300, y=4] [L28] EXPR counter++ VAL [c=4, counter=5, counter++=4, k=11, x=1300, y=4] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=5, counter=5, k=11, x=4425, y=5] [L28] EXPR counter++ VAL [c=5, counter=6, counter++=5, k=11, x=4425, y=5] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=6, counter=6, k=11, x=12201, y=6] [L28] EXPR counter++ VAL [c=6, counter=7, counter++=6, k=11, x=12201, y=6] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=7, counter=7, k=11, x=29008, y=7] [L28] EXPR counter++ VAL [c=7, counter=8, counter++=7, k=11, x=29008, y=7] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=8, counter=8, k=11, x=61776, y=8] [L28] EXPR counter++ VAL [c=8, counter=9, counter++=8, k=11, x=61776, y=8] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=9, counter=9, k=11, x=120825, y=9] [L28] EXPR counter++ VAL [c=9, counter=10, counter++=9, k=11, x=120825, y=9] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=10, counter=10, k=11, x=220825, y=10] [L28] EXPR counter++ VAL [c=10, counter=11, counter++=10, k=11, x=220825, y=10] [L28] COND FALSE !(counter++<10) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L12] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - UnprovableResult [Line: 12]: 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: 12]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 302.0s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 260 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 905 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 311 IncrementalHoareTripleChecker+Unchecked, 741 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 164 mSDtfsCounter, 469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 289 SyntacticMatches, 10 SemanticMatches, 122 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=7, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 213.2s SatisfiabilityAnalysisTime, 70.3s InterpolantComputationTime, 263 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 372 ConstructedInterpolants, 70 QuantifiedInterpolants, 5503 SizeOfPredicates, 37 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 2/486 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! [2021-11-23 14:12:47,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97e86ffd-fc50-4d67-a52f-7639117f7a9f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE