./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohendiv-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohendiv-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 601ddeb38cc85433f6271611bfd2617c2fcbf2b89119dbe2c319aedc14aa3b17 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:47:14,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:47:14,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:47:14,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:47:14,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:47:14,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:47:14,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:47:14,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:47:14,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:47:14,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:47:14,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:47:14,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:47:14,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:47:14,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:47:14,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:47:14,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:47:14,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:47:14,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:47:14,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:47:14,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:47:14,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:47:14,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:47:14,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:47:14,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:47:14,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:47:14,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:47:14,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:47:14,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:47:14,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:47:14,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:47:14,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:47:14,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:47:14,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:47:14,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:47:14,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:47:14,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:47:14,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:47:14,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:47:14,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:47:14,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:47:14,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:47:14,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:47:14,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:47:14,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:47:14,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:47:14,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:47:14,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:47:14,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:47:14,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:47:14,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:47:14,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:47:14,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:47:14,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:47:14,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:47:14,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:47:14,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:47:14,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:47:14,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:47:14,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:47:14,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:47:14,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:47:14,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:47:14,582 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_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601ddeb38cc85433f6271611bfd2617c2fcbf2b89119dbe2c319aedc14aa3b17 [2021-10-21 19:47:14,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:47:14,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:47:14,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:47:14,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:47:14,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:47:14,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2021-10-21 19:47:14,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/data/ad3d26bdc/3197e30a39d347e6b50a7c8a48722f52/FLAGe18e9ebad [2021-10-21 19:47:15,523 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:47:15,524 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/sv-benchmarks/c/nla-digbench/cohendiv-ll.c [2021-10-21 19:47:15,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/data/ad3d26bdc/3197e30a39d347e6b50a7c8a48722f52/FLAGe18e9ebad [2021-10-21 19:47:15,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/data/ad3d26bdc/3197e30a39d347e6b50a7c8a48722f52 [2021-10-21 19:47:15,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:47:15,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:47:15,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:47:15,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:47:15,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:47:15,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:47:15" (1/1) ... [2021-10-21 19:47:15,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:15, skipping insertion in model container [2021-10-21 19:47:15,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:47:15" (1/1) ... [2021-10-21 19:47:15,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:47:15,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:47:16,094 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/sv-benchmarks/c/nla-digbench/cohendiv-ll.c[576,589] [2021-10-21 19:47:16,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:47:16,120 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:47:16,132 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/sv-benchmarks/c/nla-digbench/cohendiv-ll.c[576,589] [2021-10-21 19:47:16,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:47:16,153 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:47:16,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16 WrapperNode [2021-10-21 19:47:16,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:47:16,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:47:16,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:47:16,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:47:16,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:47:16,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:47:16,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:47:16,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:47:16,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:47:16,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:47:16,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:47:16,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:47:16,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (1/1) ... [2021-10-21 19:47:16,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:47:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:16,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:47:16,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:47:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:47:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:47:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:47:16,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:47:16,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:47:16,601 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-21 19:47:16,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:47:16 BoogieIcfgContainer [2021-10-21 19:47:16,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:47:16,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:47:16,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:47:16,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:47:16,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:47:15" (1/3) ... [2021-10-21 19:47:16,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc97659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:47:16, skipping insertion in model container [2021-10-21 19:47:16,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:47:16" (2/3) ... [2021-10-21 19:47:16,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc97659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:47:16, skipping insertion in model container [2021-10-21 19:47:16,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:47:16" (3/3) ... [2021-10-21 19:47:16,636 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll.c [2021-10-21 19:47:16,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:47:16,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 19:47:16,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:47:16,722 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:47:16,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:47:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:47:16,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:16,743 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:16,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:16,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:16,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-21 19:47:16,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:16,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534080525] [2021-10-21 19:47:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:16,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:16,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:16,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534080525] [2021-10-21 19:47:16,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534080525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:16,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:16,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:47:16,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929650661] [2021-10-21 19:47:16,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:47:16,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:47:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:47:16,970 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:16,993 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-10-21 19:47:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:47:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-21 19:47:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:17,002 INFO L225 Difference]: With dead ends: 75 [2021-10-21 19:47:17,002 INFO L226 Difference]: Without dead ends: 35 [2021-10-21 19:47:17,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:47:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-21 19:47:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-21 19:47:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-21 19:47:17,045 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 7 [2021-10-21 19:47:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:17,046 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-21 19:47:17,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-10-21 19:47:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:47:17,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:17,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:17,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:47:17,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-21 19:47:17,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:17,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501263708] [2021-10-21 19:47:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:17,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:17,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:17,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969672193] [2021-10-21 19:47:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:17,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:17,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:17,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:17,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:47:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:17,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:47:17,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:17,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:17,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501263708] [2021-10-21 19:47:17,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:17,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969672193] [2021-10-21 19:47:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969672193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:17,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:47:17,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693314680] [2021-10-21 19:47:17,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:17,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:17,427 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:17,561 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2021-10-21 19:47:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:47:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-21 19:47:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:17,563 INFO L225 Difference]: With dead ends: 48 [2021-10-21 19:47:17,563 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:47:17,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:47:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:47:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2021-10-21 19:47:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-21 19:47:17,570 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 7 [2021-10-21 19:47:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:17,571 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-21 19:47:17,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-21 19:47:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:47:17,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:17,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:17,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:17,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:17,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:17,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-21 19:47:17,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:17,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425304412] [2021-10-21 19:47:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:17,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:17,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:17,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248244563] [2021-10-21 19:47:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:17,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:17,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:17,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:47:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:17,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:47:17,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:18,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:18,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425304412] [2021-10-21 19:47:18,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:18,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248244563] [2021-10-21 19:47:18,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248244563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:18,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:18,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:47:18,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574892001] [2021-10-21 19:47:18,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:18,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:18,083 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:18,243 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-10-21 19:47:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:47:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 19:47:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:18,248 INFO L225 Difference]: With dead ends: 65 [2021-10-21 19:47:18,248 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 19:47:18,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 72.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:47:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 19:47:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2021-10-21 19:47:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-10-21 19:47:18,263 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 9 [2021-10-21 19:47:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:18,264 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-10-21 19:47:18,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-10-21 19:47:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:47:18,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:18,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:18,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:18,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash -578267872, now seen corresponding path program 1 times [2021-10-21 19:47:18,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:18,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054998426] [2021-10-21 19:47:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:18,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:18,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:18,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441795956] [2021-10-21 19:47:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:18,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:18,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:18,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:47:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:18,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:47:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:18,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:18,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054998426] [2021-10-21 19:47:18,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:18,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441795956] [2021-10-21 19:47:18,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441795956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:18,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:18,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:47:18,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118881107] [2021-10-21 19:47:18,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:47:18,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:47:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:47:18,634 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:18,746 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-10-21 19:47:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:47:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 19:47:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:18,748 INFO L225 Difference]: With dead ends: 91 [2021-10-21 19:47:18,749 INFO L226 Difference]: Without dead ends: 85 [2021-10-21 19:47:18,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:47:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-21 19:47:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2021-10-21 19:47:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.278688524590164) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-10-21 19:47:18,765 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 12 [2021-10-21 19:47:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:18,765 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-10-21 19:47:18,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-10-21 19:47:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:47:18,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:18,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:18,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:18,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:18,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1843958970, now seen corresponding path program 1 times [2021-10-21 19:47:18,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:18,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553848724] [2021-10-21 19:47:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:18,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:18,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:18,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051737487] [2021-10-21 19:47:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:18,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:18,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:18,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:19,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:47:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:19,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:47:19,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:19,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:19,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553848724] [2021-10-21 19:47:19,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:19,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051737487] [2021-10-21 19:47:19,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051737487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:19,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:19,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:47:19,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859381703] [2021-10-21 19:47:19,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:19,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:19,186 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:19,373 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-10-21 19:47:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:47:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:47:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:19,374 INFO L225 Difference]: With dead ends: 68 [2021-10-21 19:47:19,374 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 19:47:19,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:47:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 19:47:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-21 19:47:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 65 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) [2021-10-21 19:47:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-10-21 19:47:19,395 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 16 [2021-10-21 19:47:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:19,395 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-10-21 19:47:19,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-10-21 19:47:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:47:19,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:19,397 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:19,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:19,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:19,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:19,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1365902793, now seen corresponding path program 1 times [2021-10-21 19:47:19,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:19,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750053867] [2021-10-21 19:47:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:19,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:19,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:19,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486572598] [2021-10-21 19:47:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:19,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:19,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:19,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:47:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:47:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:19,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:19,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750053867] [2021-10-21 19:47:19,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:19,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486572598] [2021-10-21 19:47:19,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486572598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:47:19,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:47:19,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:47:19,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823457848] [2021-10-21 19:47:19,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:47:19,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:47:19,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:47:19,847 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:19,987 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2021-10-21 19:47:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:47:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:47:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:19,989 INFO L225 Difference]: With dead ends: 119 [2021-10-21 19:47:19,989 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 19:47:19,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:47:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 19:47:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2021-10-21 19:47:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.205128205128205) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-10-21 19:47:20,002 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 21 [2021-10-21 19:47:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:20,002 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-10-21 19:47:20,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-10-21 19:47:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:47:20,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:20,004 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:20,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:20,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:20,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2036194295, now seen corresponding path program 1 times [2021-10-21 19:47:20,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:20,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784542708] [2021-10-21 19:47:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:20,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:20,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:20,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013921024] [2021-10-21 19:47:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:20,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:20,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:47:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:20,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:47:20,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:20,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:20,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784542708] [2021-10-21 19:47:20,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:20,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013921024] [2021-10-21 19:47:20,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013921024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:47:20,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:47:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:47:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138383804] [2021-10-21 19:47:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:20,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:20,585 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:20,753 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2021-10-21 19:47:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:47:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:47:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:20,755 INFO L225 Difference]: With dead ends: 136 [2021-10-21 19:47:20,755 INFO L226 Difference]: Without dead ends: 128 [2021-10-21 19:47:20,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:47:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-21 19:47:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 97. [2021-10-21 19:47:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 96 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2021-10-21 19:47:20,770 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 22 [2021-10-21 19:47:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:20,770 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2021-10-21 19:47:20,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2021-10-21 19:47:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:47:20,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:20,772 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:20,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:20,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:20,998 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:20,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1827275584, now seen corresponding path program 2 times [2021-10-21 19:47:20,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:20,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209537881] [2021-10-21 19:47:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:20,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:21,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:21,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121211552] [2021-10-21 19:47:21,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:47:21,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:21,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:21,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:21,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:47:21,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:47:21,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:47:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:47:21,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:21,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:21,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209537881] [2021-10-21 19:47:21,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:21,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121211552] [2021-10-21 19:47:21,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121211552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:47:21,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:47:21,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:47:21,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786059118] [2021-10-21 19:47:21,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:21,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:21,340 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:21,543 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2021-10-21 19:47:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:47:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:47:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:21,546 INFO L225 Difference]: With dead ends: 164 [2021-10-21 19:47:21,546 INFO L226 Difference]: Without dead ends: 158 [2021-10-21 19:47:21,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:47:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-21 19:47:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 115. [2021-10-21 19:47:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.18348623853211) internal successors, (129), 114 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-10-21 19:47:21,562 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 30 [2021-10-21 19:47:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:21,562 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-10-21 19:47:21,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-10-21 19:47:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 19:47:21,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:21,564 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:21,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:21,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:47:21,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:21,782 INFO L82 PathProgramCache]: Analyzing trace with hash -841118368, now seen corresponding path program 1 times [2021-10-21 19:47:21,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:21,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011519245] [2021-10-21 19:47:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:21,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:21,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:21,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176839195] [2021-10-21 19:47:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:21,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:21,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:21,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:21,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:47:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:47:21,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:47:21,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:22,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:22,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011519245] [2021-10-21 19:47:22,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:22,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176839195] [2021-10-21 19:47:22,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176839195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:47:22,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:47:22,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:47:22,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019367521] [2021-10-21 19:47:22,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:47:22,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:47:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:47:22,396 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:22,652 INFO L93 Difference]: Finished difference Result 206 states and 230 transitions. [2021-10-21 19:47:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:47:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 19:47:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:22,654 INFO L225 Difference]: With dead ends: 206 [2021-10-21 19:47:22,655 INFO L226 Difference]: Without dead ends: 198 [2021-10-21 19:47:22,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:47:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-21 19:47:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 124. [2021-10-21 19:47:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 123 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2021-10-21 19:47:22,670 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 31 [2021-10-21 19:47:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:22,671 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2021-10-21 19:47:22,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2021-10-21 19:47:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 19:47:22,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:22,673 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:22,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:22,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:22,898 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:22,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:22,898 INFO L82 PathProgramCache]: Analyzing trace with hash -941558542, now seen corresponding path program 2 times [2021-10-21 19:47:22,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:22,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757058996] [2021-10-21 19:47:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:22,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:22,907 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:22,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816541482] [2021-10-21 19:47:22,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:47:22,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:22,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:22,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:47:23,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:47:23,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:47:23,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:47:23,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:47:23,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:23,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757058996] [2021-10-21 19:47:23,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:23,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816541482] [2021-10-21 19:47:23,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816541482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:47:23,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:47:23,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:47:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253614784] [2021-10-21 19:47:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:47:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:47:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:47:23,161 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:47:23,216 INFO L93 Difference]: Finished difference Result 237 states and 264 transitions. [2021-10-21 19:47:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:47:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-21 19:47:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:47:23,217 INFO L225 Difference]: With dead ends: 237 [2021-10-21 19:47:23,217 INFO L226 Difference]: Without dead ends: 138 [2021-10-21 19:47:23,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:47:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-21 19:47:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2021-10-21 19:47:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 124 states have (on average 1.1693548387096775) internal successors, (145), 129 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-10-21 19:47:23,242 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 35 [2021-10-21 19:47:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:47:23,242 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-10-21 19:47:23,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:47:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-10-21 19:47:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 19:47:23,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:47:23,244 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:47:23,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:47:23,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:47:23,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:47:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:47:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash -214287447, now seen corresponding path program 3 times [2021-10-21 19:47:23,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:47:23,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468198514] [2021-10-21 19:47:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:47:23,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:47:23,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:47:23,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817486004] [2021-10-21 19:47:23,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:47:23,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:47:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:47:23,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:47:23,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:47:23,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:47:23,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:47:23,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:47:23,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:47:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 19:47:25,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:47:25,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468198514] [2021-10-21 19:47:25,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:47:25,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817486004] [2021-10-21 19:47:25,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817486004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:47:25,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:47:25,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:47:25,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580664496] [2021-10-21 19:47:25,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:47:25,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:47:25,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:47:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-10-21 19:47:25,885 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:02,076 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-10-21 19:48:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:48:02,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-21 19:48:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:02,080 INFO L225 Difference]: With dead ends: 138 [2021-10-21 19:48:02,080 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:48:02,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 15687.8ms TimeCoverageRelationStatistics Valid=36, Invalid=52, Unknown=2, NotChecked=0, Total=90 [2021-10-21 19:48:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:48:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 83. [2021-10-21 19:48:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.125) internal successors, (90), 82 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-10-21 19:48:02,095 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 39 [2021-10-21 19:48:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:02,095 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-10-21 19:48:02,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-10-21 19:48:02,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 19:48:02,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:02,097 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:02,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:02,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:48:02,315 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash 294937111, now seen corresponding path program 2 times [2021-10-21 19:48:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:02,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098795386] [2021-10-21 19:48:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:02,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:02,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166881420] [2021-10-21 19:48:02,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:48:02,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:02,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:48:02,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:48:02,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:02,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:48:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:03,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:03,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098795386] [2021-10-21 19:48:03,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166881420] [2021-10-21 19:48:03,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166881420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:03,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:03,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:48:03,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784640304] [2021-10-21 19:48:03,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:48:03,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:48:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:48:03,465 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:04,098 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2021-10-21 19:48:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:48:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-21 19:48:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:04,101 INFO L225 Difference]: With dead ends: 137 [2021-10-21 19:48:04,101 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:48:04,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 421.2ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:48:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:48:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 92. [2021-10-21 19:48:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 91 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-10-21 19:48:04,122 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 40 [2021-10-21 19:48:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:04,122 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-10-21 19:48:04,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-10-21 19:48:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-21 19:48:04,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:04,125 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:04,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:04,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:04,330 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -165636567, now seen corresponding path program 3 times [2021-10-21 19:48:04,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:04,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884746530] [2021-10-21 19:48:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:04,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:04,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:04,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48647770] [2021-10-21 19:48:04,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:48:04,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:04,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:04,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:48:04,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:48:04,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:04,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:48:04,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:48:04,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:04,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884746530] [2021-10-21 19:48:04,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:04,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48647770] [2021-10-21 19:48:04,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48647770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:04,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:04,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:48:04,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227998720] [2021-10-21 19:48:04,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:48:04,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:48:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:48:04,850 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:04,992 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-10-21 19:48:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:48:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-21 19:48:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:04,994 INFO L225 Difference]: With dead ends: 102 [2021-10-21 19:48:04,994 INFO L226 Difference]: Without dead ends: 86 [2021-10-21 19:48:04,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:48:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-21 19:48:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2021-10-21 19:48:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 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) [2021-10-21 19:48:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-10-21 19:48:05,012 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 44 [2021-10-21 19:48:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:05,013 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-10-21 19:48:05,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-10-21 19:48:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 19:48:05,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:05,019 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:05,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:05,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:48:05,234 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash 214690624, now seen corresponding path program 4 times [2021-10-21 19:48:05,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:05,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954754654] [2021-10-21 19:48:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:05,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:05,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:05,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727861071] [2021-10-21 19:48:05,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:48:05,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:05,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:05,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:05,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:48:05,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:48:05,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:05,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 19:48:05,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:08,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:08,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954754654] [2021-10-21 19:48:08,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:08,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727861071] [2021-10-21 19:48:08,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727861071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:08,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:08,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 19:48:08,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905305573] [2021-10-21 19:48:08,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:48:08,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:08,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:48:08,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:48:08,948 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:10,834 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2021-10-21 19:48:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:48:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-21 19:48:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:10,835 INFO L225 Difference]: With dead ends: 112 [2021-10-21 19:48:10,835 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 19:48:10,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1359.2ms TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:48:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 19:48:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 72. [2021-10-21 19:48:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-10-21 19:48:10,853 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 49 [2021-10-21 19:48:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:10,854 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-10-21 19:48:10,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-10-21 19:48:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:48:10,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:10,855 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:10,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:11,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:11,058 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1645991058, now seen corresponding path program 5 times [2021-10-21 19:48:11,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:11,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261505904] [2021-10-21 19:48:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:11,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:11,086 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:11,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783955347] [2021-10-21 19:48:11,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:48:11,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:11,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:11,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:48:11,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-21 19:48:11,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:11,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:48:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:11,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:11,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261505904] [2021-10-21 19:48:11,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:11,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783955347] [2021-10-21 19:48:11,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783955347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:11,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:11,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:48:11,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075852179] [2021-10-21 19:48:11,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:48:11,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:48:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:48:11,627 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:11,807 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-21 19:48:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:48:11,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-10-21 19:48:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:11,810 INFO L225 Difference]: With dead ends: 127 [2021-10-21 19:48:11,810 INFO L226 Difference]: Without dead ends: 90 [2021-10-21 19:48:11,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:48:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-21 19:48:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2021-10-21 19:48:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-10-21 19:48:11,841 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 53 [2021-10-21 19:48:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:11,841 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-10-21 19:48:11,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-10-21 19:48:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:48:11,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:11,843 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:11,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:12,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:48:12,044 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 750886967, now seen corresponding path program 6 times [2021-10-21 19:48:12,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:12,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855057899] [2021-10-21 19:48:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:12,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:12,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:12,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066701435] [2021-10-21 19:48:12,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:48:12,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:12,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:12,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:48:12,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-21 19:48:12,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:48:12,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-21 19:48:12,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:12,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855057899] [2021-10-21 19:48:12,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:12,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066701435] [2021-10-21 19:48:12,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066701435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:12,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:12,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:48:12,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995489451] [2021-10-21 19:48:12,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:48:12,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:48:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:48:12,760 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:12,967 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2021-10-21 19:48:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:48:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-21 19:48:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:12,969 INFO L225 Difference]: With dead ends: 103 [2021-10-21 19:48:12,969 INFO L226 Difference]: Without dead ends: 101 [2021-10-21 19:48:12,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:48:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-21 19:48:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2021-10-21 19:48:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2021-10-21 19:48:12,991 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 58 [2021-10-21 19:48:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:12,992 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2021-10-21 19:48:12,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2021-10-21 19:48:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-21 19:48:12,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:12,993 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:13,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:13,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:48:13,206 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1317499675, now seen corresponding path program 7 times [2021-10-21 19:48:13,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:13,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774938734] [2021-10-21 19:48:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:13,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:13,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:13,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638342477] [2021-10-21 19:48:13,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:48:13,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:13,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:13,220 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:13,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:48:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:48:13,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-21 19:48:13,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:48:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:48:24,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:48:24,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774938734] [2021-10-21 19:48:24,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:48:24,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638342477] [2021-10-21 19:48:24,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638342477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:48:24,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:48:24,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-21 19:48:24,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608845105] [2021-10-21 19:48:24,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:48:24,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:48:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:48:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=225, Unknown=3, NotChecked=0, Total=272 [2021-10-21 19:48:24,886 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:56,468 WARN L207 SmtUtils]: Spent 8.43 s on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-10-21 19:48:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:48:58,665 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-10-21 19:48:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:48:58,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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) Word has length 62 [2021-10-21 19:48:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:48:58,667 INFO L225 Difference]: With dead ends: 153 [2021-10-21 19:48:58,667 INFO L226 Difference]: Without dead ends: 88 [2021-10-21 19:48:58,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 24295.6ms TimeCoverageRelationStatistics Valid=89, Invalid=506, Unknown=5, NotChecked=0, Total=600 [2021-10-21 19:48:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-21 19:48:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-21 19:48:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2021-10-21 19:48:58,693 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 62 [2021-10-21 19:48:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:48:58,693 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2021-10-21 19:48:58,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:48:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2021-10-21 19:48:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-21 19:48:58,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:48:58,694 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:48:58,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:48:58,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:48:58,918 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:48:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:48:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash -966467250, now seen corresponding path program 8 times [2021-10-21 19:48:58,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:48:58,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686453740] [2021-10-21 19:48:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:48:58,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:48:58,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:48:58,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476974063] [2021-10-21 19:48:58,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:48:58,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:48:58,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:48:58,937 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:48:58,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:48:59,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:48:59,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:48:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-21 19:48:59,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:49:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:49:07,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:07,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686453740] [2021-10-21 19:49:07,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:49:07,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476974063] [2021-10-21 19:49:07,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476974063] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:49:07,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:49:07,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-21 19:49:07,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548270633] [2021-10-21 19:49:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:49:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:49:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:49:07,192 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:17,036 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2021-10-21 19:49:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 19:49:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-21 19:49:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:17,037 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:49:17,037 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 19:49:17,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 8223.0ms TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:49:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 19:49:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2021-10-21 19:49:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-10-21 19:49:17,080 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 71 [2021-10-21 19:49:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:17,080 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-10-21 19:49:17,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-10-21 19:49:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 19:49:17,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:49:17,082 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:49:17,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:17,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:49:17,294 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:49:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:17,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1394501143, now seen corresponding path program 9 times [2021-10-21 19:49:17,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:17,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515060417] [2021-10-21 19:49:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:17,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:17,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:49:17,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129643607] [2021-10-21 19:49:17,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:49:17,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:17,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:49:17,318 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:49:17,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:49:17,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:49:17,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:49:17,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:49:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:49:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-21 19:49:18,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:49:18,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515060417] [2021-10-21 19:49:18,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:49:18,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129643607] [2021-10-21 19:49:18,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129643607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:49:18,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:49:18,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:49:18,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182488747] [2021-10-21 19:49:18,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:49:18,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:49:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:49:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:49:18,162 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:49:18,305 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2021-10-21 19:49:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:49:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-21 19:49:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:49:18,306 INFO L225 Difference]: With dead ends: 117 [2021-10-21 19:49:18,306 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:49:18,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:49:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:49:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:49:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:49:18,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-10-21 19:49:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:49:18,308 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:49:18,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:49:18,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:49:18,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:49:18,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:49:18,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:49:18,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:49:18,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:18,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:18,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:19,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:49:45,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,349 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-21 19:49:45,349 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 60) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse2 .cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and .cse0 .cse4 .cse1 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse4 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~a~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 19:49:45,349 INFO L857 garLoopResultBuilder]: For program point L36-3(lines 36 60) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L853 garLoopResultBuilder]: At program point L45-2(lines 45 57) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 1 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse6 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))))) (.cse7 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))) (or (let ((.cse3 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 (= (+ ULTIMATE.start_main_~r~0 (* 4 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~b~0 .cse3) .cse4 .cse5 (< ULTIMATE.start_main_~x~0 (* 8 ULTIMATE.start_main_~y~0)) (<= .cse3 ULTIMATE.start_main_~r~0) .cse6 .cse7)) (and .cse0 .cse8 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse8 .cse2 .cse4 .cse5 .cse6 .cse7))) [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point L45-3(lines 45 57) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,350 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,351 INFO L860 garLoopResultBuilder]: At program point L63(lines 22 64) the Hoare annotation is: true [2021-10-21 19:49:45,351 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,351 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,351 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (or (let ((.cse2 (* 2 ULTIMATE.start_main_~y~0))) (and .cse1 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse2)) .cse3 (<= .cse2 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 (= ULTIMATE.start_main_~q~0 1) .cse5))) (and .cse1 .cse6 .cse3 .cse7 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse1 .cse0 .cse6 .cse3 .cse4 .cse7 .cse5))) [2021-10-21 19:49:45,351 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,351 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 40 41) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (let ((.cse2 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse2)) (<= .cse2 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 1) .cse5))) .cse6 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse7 .cse3 .cse8 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse6 .cse7 .cse3 .cse4 .cse8 .cse5))) [2021-10-21 19:49:45,351 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,352 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-21 19:49:45,352 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,352 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-21 19:49:45,352 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,352 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 50 51) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-21 19:49:45,352 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,352 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:49:45,352 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-21 19:49:45,352 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:49:45,353 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:49:45,357 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:49:45,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:49:45 BoogieIcfgContainer [2021-10-21 19:49:45,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:49:45,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:49:45,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:49:45,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:49:45,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:47:16" (3/4) ... [2021-10-21 19:49:45,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:49:45,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-21 19:49:45,406 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:49:45,406 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:49:45,406 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:49:45,458 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:49:45,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:49:45,459 INFO L168 Benchmark]: Toolchain (without parser) took 149579.15 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 71.1 MB in the beginning and 52.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,460 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 87.5 MB in the beginning and 87.5 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:49:45,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.68 ms. Allocated memory is still 107.0 MB. Free memory was 70.9 MB in the beginning and 83.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 81.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,461 INFO L168 Benchmark]: Boogie Preprocessor took 23.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,461 INFO L168 Benchmark]: RCFGBuilder took 388.00 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 69.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,462 INFO L168 Benchmark]: TraceAbstraction took 148785.27 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 69.1 MB in the beginning and 55.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 106.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,462 INFO L168 Benchmark]: Witness Printer took 67.89 ms. Allocated memory is still 134.2 MB. Free memory was 55.1 MB in the beginning and 52.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:45,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 87.5 MB in the beginning and 87.5 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.68 ms. Allocated memory is still 107.0 MB. Free memory was 70.9 MB in the beginning and 83.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 81.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.56 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.00 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 69.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 148785.27 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 69.1 MB in the beginning and 55.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 106.6 MB. Max. memory is 16.1 GB. * Witness Printer took 67.89 ms. Allocated memory is still 134.2 MB. Free memory was 55.1 MB in the beginning and 52.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 148642.8ms, OverallIterations: 19, TraceHistogramMax: 7, EmptinessCheckTime: 29.9ms, AutomataDifference: 84561.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26830.9ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 458 SDtfs, 1227 SDslu, 1044 SDs, 0 SdLazy, 2939 SolverSat, 467 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 46668.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 764 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 50902.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=10, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 336.8ms AutomataMinimizationTime, 19 MinimizatonAttempts, 412 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 101 NumberOfFragments, 688 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1699357 FormulaSimplificationTreeSizeReduction, 1256.8ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 322443 FormulaSimplificationTreeSizeReductionInter, 25565.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 145.4ms SsaConstructionTime, 494.7ms SatisfiabilityAnalysisTime, 28552.0ms InterpolantComputationTime, 686 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 667 ConstructedInterpolants, 2 QuantifiedInterpolants, 9265 SizeOfPredicates, 132 NumberOfNonLiveVariables, 2154 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 386/744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (1 == cond && x == r + q * y) && (((((cond == 1 && 1 <= y) && 1 <= r) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || ((((cond == 1 && 1 <= y) && a == 1) && 1 <= r) && b == y)) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 <= cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 <= cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y) || ((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && 1 <= cond) && r + 4 * y == x) && 1 <= y) && b == 2 * y) && 1 <= r) && x == r + q * y) && x < 8 * y) && 2 * y <= r) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || ((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y)) || (((((((cond == 1 && 1 <= cond) && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 2 * y <= x) || ((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && a == 1) && q == 1) && b == y)) && r < y) && b <= y) || (((((cond == 1 && 1 == cond) && 1 <= y) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || ((((((cond == 1 && r < y) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((r < y && b <= y) && (((((cond == 1 && q == 2) && x == r + 2 * y) && 1 <= y) && 2 * y <= x) || ((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && a == 1) && q == 1) && b == y))) || (((((cond == 1 && 1 == cond) && 1 <= y) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || ((((((cond == 1 && r < y) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && b == y) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((cond == 1 && 1 <= y) && a == q) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && r == x) || (((((cond == 1 && 1 <= cond) && 1 <= y) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0)) || ((((((cond == 1 && 1 <= cond) && r < y) && 1 <= y) && a == 1) && x == r + q * y) && b == y) RESULT: Ultimate proved your program to be correct! [2021-10-21 19:49:45,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37134af7-b63e-4599-ae62-3ebf7c9c6947/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...