./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.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_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/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_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/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_8730aa57-27d7-47a5-b3f9-5022e5296975/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 b0dc7e6cdf006545b97e616af165994b39a2e54c024b52d6607380c5e84ee914 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:23:39,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:23:39,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:23:39,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:23:39,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:23:39,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:23:39,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:23:39,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:23:39,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:23:39,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:23:39,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:23:39,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:23:39,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:23:39,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:23:39,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:23:39,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:23:39,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:23:39,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:23:39,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:23:39,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:23:39,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:23:39,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:23:39,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:23:39,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:23:39,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:23:39,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:23:39,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:23:39,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:23:39,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:23:39,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:23:39,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:23:39,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:23:39,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:23:39,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:23:39,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:23:39,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:23:39,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:23:39,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:23:39,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:23:39,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:23:39,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:23:39,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:23:39,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:23:39,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:23:39,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:23:39,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:23:39,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:23:39,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:23:39,480 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:23:39,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:23:39,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:23:39,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:23:39,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:23:39,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:23:39,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:23:39,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:23:39,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:23:39,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:23:39,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:23:39,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:23:39,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:23:39,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:23:39,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:23:39,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:23:39,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:23:39,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:23:39,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:23:39,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:23:39,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:23:39,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:23:39,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:23:39,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:23:39,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:23:39,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:23:39,487 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_8730aa57-27d7-47a5-b3f9-5022e5296975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0dc7e6cdf006545b97e616af165994b39a2e54c024b52d6607380c5e84ee914 [2021-10-21 19:23:39,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:23:39,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:23:39,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:23:39,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:23:39,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:23:39,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-10-21 19:23:39,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/data/bf6dfdb7c/eddfa169804b4d9a8a4b14c3ac8d4171/FLAG363d3d8fd [2021-10-21 19:23:40,521 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:23:40,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-10-21 19:23:40,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/data/bf6dfdb7c/eddfa169804b4d9a8a4b14c3ac8d4171/FLAG363d3d8fd [2021-10-21 19:23:40,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/data/bf6dfdb7c/eddfa169804b4d9a8a4b14c3ac8d4171 [2021-10-21 19:23:40,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:23:40,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:23:40,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:40,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:23:40,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:23:40,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:40" (1/1) ... [2021-10-21 19:23:40,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76607ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:40, skipping insertion in model container [2021-10-21 19:23:40,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:40" (1/1) ... [2021-10-21 19:23:40,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:23:40,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:23:41,161 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_8730aa57-27d7-47a5-b3f9-5022e5296975/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2021-10-21 19:23:41,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:41,192 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:23:41,204 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_8730aa57-27d7-47a5-b3f9-5022e5296975/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2021-10-21 19:23:41,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:41,229 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:23:41,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41 WrapperNode [2021-10-21 19:23:41,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:41,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:41,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:23:41,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:23:41,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:41,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:23:41,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:23:41,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:23:41,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:23:41,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:23:41,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:23:41,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:23:41,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (1/1) ... [2021-10-21 19:23:41,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:23:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:41,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:41,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:23:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:23:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:23:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:23:41,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:23:41,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:23:41,772 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-21 19:23:41,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:41 BoogieIcfgContainer [2021-10-21 19:23:41,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:23:41,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:23:41,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:23:41,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:23:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:23:40" (1/3) ... [2021-10-21 19:23:41,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533521ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:23:41, skipping insertion in model container [2021-10-21 19:23:41,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:41" (2/3) ... [2021-10-21 19:23:41,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533521ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:23:41, skipping insertion in model container [2021-10-21 19:23:41,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:41" (3/3) ... [2021-10-21 19:23:41,785 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound20.c [2021-10-21 19:23:41,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:23:41,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 19:23:41,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:23:41,927 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 19:23:41,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:23:41,953 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 19:23:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:23:41,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:41,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:23:41,960 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 19:23:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-21 19:23:41,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:41,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805050715] [2021-10-21 19:23:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:41,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:42,289 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 19:23:42,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:42,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805050715] [2021-10-21 19:23:42,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805050715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:42,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:42,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:42,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895877476] [2021-10-21 19:23:42,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:42,319 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:42,487 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-10-21 19:23:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:23:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 19:23:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:42,501 INFO L225 Difference]: With dead ends: 102 [2021-10-21 19:23:42,501 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 19:23:42,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 19:23:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-10-21 19:23:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-21 19:23:42,560 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-10-21 19:23:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:42,562 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-21 19:23:42,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-21 19:23:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:23:42,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:42,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:42,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:23:42,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-10-21 19:23:42,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:42,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578138997] [2021-10-21 19:23:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:42,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:42,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:42,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166203562] [2021-10-21 19:23:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:42,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:42,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:42,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:42,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:23:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:42,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:23:42,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:42,823 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 19:23:42,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578138997] [2021-10-21 19:23:42,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166203562] [2021-10-21 19:23:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166203562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:42,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:42,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:23:42,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302275262] [2021-10-21 19:23:42,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:42,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:42,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:42,846 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:42,868 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-10-21 19:23:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 19:23:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:42,873 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:23:42,874 INFO L226 Difference]: Without dead ends: 35 [2021-10-21 19:23:42,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-21 19:23:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-21 19:23:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 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 19:23:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-21 19:23:42,891 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-10-21 19:23:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:42,891 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-21 19:23:42,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-21 19:23:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:23:42,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:42,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:42,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:43,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:43,109 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 19:23:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-21 19:23:43,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:43,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885764844] [2021-10-21 19:23:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:43,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:43,229 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 19:23:43,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:43,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885764844] [2021-10-21 19:23:43,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885764844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:43,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:43,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:43,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943238736] [2021-10-21 19:23:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:43,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:43,237 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:43,351 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-10-21 19:23:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:23:43,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 19:23:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:43,353 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:23:43,353 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:23:43,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:23:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-10-21 19:23:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-21 19:23:43,365 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-10-21 19:23:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:43,365 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-21 19:23:43,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-21 19:23:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:23:43,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:43,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:43,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:23:43,390 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 19:23:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-21 19:23:43,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:43,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776031292] [2021-10-21 19:23:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:43,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:43,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:43,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132832577] [2021-10-21 19:23:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:43,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:43,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:43,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:23:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:43,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:43,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:43,793 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 19:23:43,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:43,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776031292] [2021-10-21 19:23:43,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:43,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132832577] [2021-10-21 19:23:43,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132832577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:43,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:43,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:43,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716783496] [2021-10-21 19:23:43,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:43,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:43,798 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:43,889 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-10-21 19:23:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:23:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:23:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:43,891 INFO L225 Difference]: With dead ends: 79 [2021-10-21 19:23:43,891 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:23:43,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:23:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-10-21 19:23:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 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 19:23:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-10-21 19:23:43,908 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-10-21 19:23:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:43,909 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-10-21 19:23:43,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-10-21 19:23:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:23:43,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:43,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:43,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:44,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,121 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-10-21 19:23:44,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:44,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734842885] [2021-10-21 19:23:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:44,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:44,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:44,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129780044] [2021-10-21 19:23:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:44,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:44,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:44,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:23:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:44,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:44,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:44,424 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 19:23:44,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:44,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734842885] [2021-10-21 19:23:44,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:44,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129780044] [2021-10-21 19:23:44,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129780044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:44,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:44,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:44,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455804095] [2021-10-21 19:23:44,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:44,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:44,429 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:44,518 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-10-21 19:23:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 19:23:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:44,520 INFO L225 Difference]: With dead ends: 66 [2021-10-21 19:23:44,520 INFO L226 Difference]: Without dead ends: 54 [2021-10-21 19:23:44,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-21 19:23:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-10-21 19:23:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 19:23:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-10-21 19:23:44,530 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2021-10-21 19:23:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:44,530 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-10-21 19:23:44,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-10-21 19:23:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:23:44,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:44,532 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:44,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:44,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,749 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:44,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2021-10-21 19:23:44,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:44,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116606490] [2021-10-21 19:23:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:44,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:44,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:44,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483269380] [2021-10-21 19:23:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:44,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:44,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:44,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:23:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:23:44,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:44,964 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 19:23:44,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:44,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116606490] [2021-10-21 19:23:44,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:44,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483269380] [2021-10-21 19:23:44,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483269380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:44,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:44,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-21 19:23:44,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907717276] [2021-10-21 19:23:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:23:44,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:23:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:44,969 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:45,003 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-21 19:23:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:23:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:23:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:45,006 INFO L225 Difference]: With dead ends: 78 [2021-10-21 19:23:45,008 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:23:45,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:23:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 19:23:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.288888888888889) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-21 19:23:45,028 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2021-10-21 19:23:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-21 19:23:45,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-10-21 19:23:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:23:45,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:45,032 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:45,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:45,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:45,248 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:45,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:45,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-10-21 19:23:45,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:45,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251358628] [2021-10-21 19:23:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:45,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:45,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:45,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559690760] [2021-10-21 19:23:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:45,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:45,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:45,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:23:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:45,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:23:45,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:45,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:45,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251358628] [2021-10-21 19:23:45,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:45,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559690760] [2021-10-21 19:23:45,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559690760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:45,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:45,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:23:45,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367630184] [2021-10-21 19:23:45,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:23:45,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:45,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:23:45,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:45,708 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:45,877 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2021-10-21 19:23:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:23:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:23:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:45,880 INFO L225 Difference]: With dead ends: 126 [2021-10-21 19:23:45,880 INFO L226 Difference]: Without dead ends: 86 [2021-10-21 19:23:45,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-21 19:23:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2021-10-21 19:23:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-10-21 19:23:45,893 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2021-10-21 19:23:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:45,894 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-10-21 19:23:45,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-10-21 19:23:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:23:45,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:45,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:45,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:46,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:46,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2021-10-21 19:23:46,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:46,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966939592] [2021-10-21 19:23:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:46,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:46,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:46,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63259533] [2021-10-21 19:23:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:46,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:46,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:46,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:46,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:23:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:46,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:46,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:46,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:46,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966939592] [2021-10-21 19:23:46,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:46,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63259533] [2021-10-21 19:23:46,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63259533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:46,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:46,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:23:46,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670507543] [2021-10-21 19:23:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:23:46,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:23:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:46,410 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 19:23:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:46,440 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2021-10-21 19:23:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:23:46,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 25 [2021-10-21 19:23:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:46,442 INFO L225 Difference]: With dead ends: 78 [2021-10-21 19:23:46,442 INFO L226 Difference]: Without dead ends: 72 [2021-10-21 19:23:46,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-21 19:23:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-21 19:23:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-10-21 19:23:46,453 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 25 [2021-10-21 19:23:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:46,454 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-10-21 19:23:46,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 19:23:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-10-21 19:23:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:23:46,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:46,456 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:46,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:46,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:46,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:46,685 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2021-10-21 19:23:46,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:46,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822959018] [2021-10-21 19:23:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:46,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:46,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:46,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507407406] [2021-10-21 19:23:46,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:46,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:46,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:46,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:23:46,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:23:46,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:46,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-21 19:23:46,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822959018] [2021-10-21 19:23:46,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507407406] [2021-10-21 19:23:46,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507407406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:46,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:46,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:23:46,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340110373] [2021-10-21 19:23:46,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:23:46,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:46,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:23:46,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:46,958 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:46,994 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-10-21 19:23:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:23:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:23:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:46,996 INFO L225 Difference]: With dead ends: 107 [2021-10-21 19:23:46,996 INFO L226 Difference]: Without dead ends: 79 [2021-10-21 19:23:46,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-21 19:23:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-10-21 19:23:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:23:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-10-21 19:23:47,006 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 26 [2021-10-21 19:23:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:47,007 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-10-21 19:23:47,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-10-21 19:23:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:23:47,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:47,009 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-21 19:23:47,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 19:23:47,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 19:23:47,236 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-10-21 19:23:47,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:47,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781491085] [2021-10-21 19:23:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:47,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:47,249 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:47,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55779004] [2021-10-21 19:23:47,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:47,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:47,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:47,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:23:47,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:47,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:47,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:23:47,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:47,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:47,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781491085] [2021-10-21 19:23:47,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:47,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55779004] [2021-10-21 19:23:47,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55779004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:47,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:47,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:23:47,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319797980] [2021-10-21 19:23:47,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:23:47,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:23:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:47,820 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:48,124 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2021-10-21 19:23:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:23:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:23:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:48,126 INFO L225 Difference]: With dead ends: 182 [2021-10-21 19:23:48,126 INFO L226 Difference]: Without dead ends: 141 [2021-10-21 19:23:48,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:23:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-21 19:23:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2021-10-21 19:23:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 96 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 19:23:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2021-10-21 19:23:48,141 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 26 [2021-10-21 19:23:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:48,142 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2021-10-21 19:23:48,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2021-10-21 19:23:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:23:48,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:48,144 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:48,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:48,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:23:48,365 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2021-10-21 19:23:48,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:48,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973347346] [2021-10-21 19:23:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:48,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:48,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:48,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650121277] [2021-10-21 19:23:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:48,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:48,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:48,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:23:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:48,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:48,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:48,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:48,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973347346] [2021-10-21 19:23:48,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:48,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650121277] [2021-10-21 19:23:48,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650121277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:48,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:48,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:23:48,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410950321] [2021-10-21 19:23:48,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:23:48,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:48,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:23:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:48,694 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:48,733 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2021-10-21 19:23:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:23:48,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-21 19:23:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:48,735 INFO L225 Difference]: With dead ends: 105 [2021-10-21 19:23:48,735 INFO L226 Difference]: Without dead ends: 97 [2021-10-21 19:23:48,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-21 19:23:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-21 19:23:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.25) internal successors, (115), 96 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 19:23:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2021-10-21 19:23:48,746 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 27 [2021-10-21 19:23:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:48,746 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2021-10-21 19:23:48,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2021-10-21 19:23:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:23:48,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:48,748 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] [2021-10-21 19:23:48,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:48,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:48,967 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:48,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2021-10-21 19:23:48,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:48,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439989345] [2021-10-21 19:23:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:48,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:48,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:48,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171084844] [2021-10-21 19:23:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:48,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:48,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:48,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:49,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:23:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:49,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:23:49,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:49,771 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 19:23:49,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:49,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439989345] [2021-10-21 19:23:49,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:49,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171084844] [2021-10-21 19:23:49,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171084844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:49,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:49,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:23:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592315805] [2021-10-21 19:23:49,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:23:49,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:23:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:23:49,775 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:49,934 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-10-21 19:23:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:23:49,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 19:23:49,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:49,936 INFO L225 Difference]: With dead ends: 115 [2021-10-21 19:23:49,936 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 19:23:49,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 19:23:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2021-10-21 19:23:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.24) internal successors, (124), 104 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:23:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2021-10-21 19:23:49,948 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 29 [2021-10-21 19:23:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:49,948 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2021-10-21 19:23:49,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2021-10-21 19:23:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:23:49,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:49,954 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:50,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:50,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:50,172 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2021-10-21 19:23:50,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:50,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287270687] [2021-10-21 19:23:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:50,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:50,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:50,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073351925] [2021-10-21 19:23:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:50,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:50,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:50,188 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:50,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:23:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:50,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:50,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:50,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:50,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287270687] [2021-10-21 19:23:50,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:50,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073351925] [2021-10-21 19:23:50,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073351925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:50,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:50,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:23:50,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031670780] [2021-10-21 19:23:50,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:50,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:50,573 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) 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 19:23:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:50,612 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2021-10-21 19:23:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:23:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) 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 19:23:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:50,616 INFO L225 Difference]: With dead ends: 116 [2021-10-21 19:23:50,616 INFO L226 Difference]: Without dead ends: 106 [2021-10-21 19:23:50,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-21 19:23:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-10-21 19:23:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.22) internal successors, (122), 104 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2021-10-21 19:23:50,630 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 30 [2021-10-21 19:23:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:50,631 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2021-10-21 19:23:50,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) 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 19:23:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2021-10-21 19:23:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:23:50,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:50,636 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-10-21 19:23:50,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:50,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:50,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2021-10-21 19:23:50,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:50,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566100864] [2021-10-21 19:23:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:50,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:50,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:50,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512530895] [2021-10-21 19:23:50,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:50,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:50,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:50,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:23:51,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:23:51,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:51,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:23:51,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-21 19:23:51,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:51,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566100864] [2021-10-21 19:23:51,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:51,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512530895] [2021-10-21 19:23:51,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512530895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:51,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:23:51,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445927377] [2021-10-21 19:23:51,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:51,357 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 19:23:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:51,569 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2021-10-21 19:23:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:23:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 34 [2021-10-21 19:23:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:51,571 INFO L225 Difference]: With dead ends: 123 [2021-10-21 19:23:51,571 INFO L226 Difference]: Without dead ends: 113 [2021-10-21 19:23:51,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-21 19:23:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-10-21 19:23:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:23:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2021-10-21 19:23:51,583 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 34 [2021-10-21 19:23:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:51,583 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2021-10-21 19:23:51,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 19:23:51,583 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2021-10-21 19:23:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:23:51,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:51,584 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:51,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:51,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:23:51,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2021-10-21 19:23:51,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:51,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749692811] [2021-10-21 19:23:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:51,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:51,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:51,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664210957] [2021-10-21 19:23:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:51,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:51,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:51,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:51,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:23:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 19:23:52,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:52,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:52,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749692811] [2021-10-21 19:23:52,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:52,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664210957] [2021-10-21 19:23:52,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664210957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:52,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:52,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:23:52,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33362317] [2021-10-21 19:23:52,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:52,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:52,543 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:52,707 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-10-21 19:23:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:23:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-21 19:23:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:52,709 INFO L225 Difference]: With dead ends: 114 [2021-10-21 19:23:52,709 INFO L226 Difference]: Without dead ends: 97 [2021-10-21 19:23:52,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:23:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-21 19:23:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-21 19:23:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.202127659574468) internal successors, (113), 96 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 19:23:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-21 19:23:52,720 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 34 [2021-10-21 19:23:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:52,720 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-21 19:23:52,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-21 19:23:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 19:23:52,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:52,721 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:52,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:52,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:23:52,940 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:52,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2021-10-21 19:23:52,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:52,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612285860] [2021-10-21 19:23:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:52,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:52,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:52,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268219731] [2021-10-21 19:23:52,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:52,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:52,981 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:52,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:23:53,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:53,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:53,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:53,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:53,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:53,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612285860] [2021-10-21 19:23:53,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:53,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268219731] [2021-10-21 19:23:53,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268219731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:53,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:53,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:23:53,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638870051] [2021-10-21 19:23:53,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:53,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:53,325 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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 19:23:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:53,362 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2021-10-21 19:23:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:23:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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 19:23:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:53,364 INFO L225 Difference]: With dead ends: 107 [2021-10-21 19:23:53,364 INFO L226 Difference]: Without dead ends: 99 [2021-10-21 19:23:53,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:23:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-21 19:23:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-21 19:23:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 98 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 19:23:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-10-21 19:23:53,373 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 35 [2021-10-21 19:23:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:53,374 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-10-21 19:23:53,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 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 19:23:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-10-21 19:23:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:23:53,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:53,375 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:53,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:53,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:23:53,600 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:53,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2021-10-21 19:23:53,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:53,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3160554] [2021-10-21 19:23:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:53,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:53,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:53,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579464517] [2021-10-21 19:23:53,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:53,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:53,625 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:53,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:23:53,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:53,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:53,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 19:23:53,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:54,595 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 19:23:54,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:54,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3160554] [2021-10-21 19:23:54,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:54,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579464517] [2021-10-21 19:23:54,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579464517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:54,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:54,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:23:54,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484891140] [2021-10-21 19:23:54,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:54,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:54,598 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:54,823 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2021-10-21 19:23:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:23:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-21 19:23:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:54,825 INFO L225 Difference]: With dead ends: 126 [2021-10-21 19:23:54,825 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 19:23:54,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:23:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 19:23:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2021-10-21 19:23:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 19:23:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-21 19:23:54,836 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 37 [2021-10-21 19:23:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:54,836 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-21 19:23:54,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 19:23:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-21 19:23:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:23:54,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:54,837 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:54,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:23:55,064 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2021-10-21 19:23:55,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:55,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558668143] [2021-10-21 19:23:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:55,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:55,077 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:55,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809502430] [2021-10-21 19:23:55,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:55,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:55,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:55,079 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:55,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:23:55,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:55,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:55,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:23:55,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:55,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558668143] [2021-10-21 19:23:55,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809502430] [2021-10-21 19:23:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809502430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:55,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:55,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:23:55,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186793068] [2021-10-21 19:23:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:23:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:23:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:55,536 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 19:23:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:55,589 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2021-10-21 19:23:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:23:55,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-21 19:23:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:55,591 INFO L225 Difference]: With dead ends: 121 [2021-10-21 19:23:55,591 INFO L226 Difference]: Without dead ends: 111 [2021-10-21 19:23:55,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-21 19:23:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-10-21 19:23:55,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 19:23:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-21 19:23:55,602 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 38 [2021-10-21 19:23:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:55,602 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-21 19:23:55,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 19:23:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-21 19:23:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 19:23:55,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:55,604 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:55,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:55,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:23:55,816 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2021-10-21 19:23:55,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:55,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077494097] [2021-10-21 19:23:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:55,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:55,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:55,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251692789] [2021-10-21 19:23:55,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:55,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:55,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:55,834 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:55,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:23:56,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:23:56,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:56,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:23:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:56,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:56,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077494097] [2021-10-21 19:23:56,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:56,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251692789] [2021-10-21 19:23:56,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251692789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:56,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:56,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:23:56,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089234216] [2021-10-21 19:23:56,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:23:56,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:23:56,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:56,310 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:56,375 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-21 19:23:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:23:56,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-21 19:23:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:56,378 INFO L225 Difference]: With dead ends: 120 [2021-10-21 19:23:56,378 INFO L226 Difference]: Without dead ends: 112 [2021-10-21 19:23:56,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:23:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-21 19:23:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-21 19:23:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.165137614678899) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 19:23:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-10-21 19:23:56,392 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 43 [2021-10-21 19:23:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:56,393 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-10-21 19:23:56,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-10-21 19:23:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-21 19:23:56,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:56,394 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:23:56,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:56,608 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:56,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2021-10-21 19:23:56,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:56,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940698122] [2021-10-21 19:23:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:56,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:56,616 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:56,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254580762] [2021-10-21 19:23:56,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:56,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:56,618 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:56,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:23:56,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:23:56,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:56,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:23:56,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 19:23:57,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:57,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940698122] [2021-10-21 19:23:57,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:57,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254580762] [2021-10-21 19:23:57,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254580762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:57,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:57,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:23:57,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160039069] [2021-10-21 19:23:57,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:23:57,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:23:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:57,691 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:57,799 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-10-21 19:23:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:57,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-21 19:23:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:57,801 INFO L225 Difference]: With dead ends: 112 [2021-10-21 19:23:57,801 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 19:23:57,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 19:23:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-10-21 19:23:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 19:23:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-21 19:23:57,815 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 44 [2021-10-21 19:23:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:57,815 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-21 19:23:57,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-21 19:23:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 19:23:57,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:57,816 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:57,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:58,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:58,041 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2021-10-21 19:23:58,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:58,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781542161] [2021-10-21 19:23:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:58,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:58,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:58,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817589723] [2021-10-21 19:23:58,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:58,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:58,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:58,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:58,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:23:58,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:23:58,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:58,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:23:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:58,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:58,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781542161] [2021-10-21 19:23:58,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:58,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817589723] [2021-10-21 19:23:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817589723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:58,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:58,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:23:58,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285262406] [2021-10-21 19:23:58,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:23:58,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:58,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:23:58,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:58,696 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:58,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:58,757 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2021-10-21 19:23:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:23:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 19:23:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:58,759 INFO L225 Difference]: With dead ends: 137 [2021-10-21 19:23:58,759 INFO L226 Difference]: Without dead ends: 125 [2021-10-21 19:23:58,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:23:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-21 19:23:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-10-21 19:23:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.1311475409836065) internal successors, (138), 123 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2021-10-21 19:23:58,773 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 45 [2021-10-21 19:23:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:58,773 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2021-10-21 19:23:58,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2021-10-21 19:23:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 19:23:58,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:58,774 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:58,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:58,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:58,996 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:23:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2021-10-21 19:23:58,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:58,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407301304] [2021-10-21 19:23:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:58,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:59,008 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:23:59,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438386036] [2021-10-21 19:23:59,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:59,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:59,010 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:59,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 19:23:59,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:23:59,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:59,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:23:59,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-21 19:23:59,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:59,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407301304] [2021-10-21 19:23:59,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:23:59,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438386036] [2021-10-21 19:23:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438386036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:59,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:23:59,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138395609] [2021-10-21 19:23:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:23:59,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:23:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:59,643 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:59,845 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-10-21 19:23:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:23:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-21 19:23:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:59,849 INFO L225 Difference]: With dead ends: 134 [2021-10-21 19:23:59,849 INFO L226 Difference]: Without dead ends: 95 [2021-10-21 19:23:59,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:23:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-21 19:23:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2021-10-21 19:23:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-10-21 19:23:59,862 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 49 [2021-10-21 19:23:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:59,863 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-10-21 19:23:59,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-10-21 19:23:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:23:59,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:59,864 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:59,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:00,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:00,084 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:00,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2021-10-21 19:24:00,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:00,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929881830] [2021-10-21 19:24:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:00,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:00,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:00,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360663115] [2021-10-21 19:24:00,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:24:00,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:00,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:00,103 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:00,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:24:00,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:24:00,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:00,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:24:00,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:00,668 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 19:24:00,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:00,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929881830] [2021-10-21 19:24:00,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:00,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360663115] [2021-10-21 19:24:00,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360663115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:00,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:00,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:24:00,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384322439] [2021-10-21 19:24:00,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:24:00,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:24:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:24:00,670 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:00,743 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2021-10-21 19:24:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:24:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-21 19:24:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:00,745 INFO L225 Difference]: With dead ends: 97 [2021-10-21 19:24:00,745 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 19:24:00,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:24:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 19:24:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-21 19:24:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 88 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 19:24:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2021-10-21 19:24:00,756 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 51 [2021-10-21 19:24:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:00,757 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2021-10-21 19:24:00,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2021-10-21 19:24:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:24:00,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:00,758 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:00,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:00,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-21 19:24:00,984 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1117773943, now seen corresponding path program 4 times [2021-10-21 19:24:00,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:00,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622435693] [2021-10-21 19:24:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:00,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:01,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:01,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305206085] [2021-10-21 19:24:01,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:24:01,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:01,008 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:01,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 19:24:01,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:24:01,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:01,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:24:01,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:01,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:01,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622435693] [2021-10-21 19:24:01,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:01,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305206085] [2021-10-21 19:24:01,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305206085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:01,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:01,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:24:01,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243319173] [2021-10-21 19:24:01,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:24:01,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:24:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:24:01,683 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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 19:24:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:01,749 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-10-21 19:24:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:24:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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 19:24:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:01,751 INFO L225 Difference]: With dead ends: 120 [2021-10-21 19:24:01,751 INFO L226 Difference]: Without dead ends: 110 [2021-10-21 19:24:01,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:24:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-21 19:24:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-10-21 19:24:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 19:24:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2021-10-21 19:24:01,774 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 53 [2021-10-21 19:24:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2021-10-21 19:24:01,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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 19:24:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2021-10-21 19:24:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-21 19:24:01,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:01,776 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:01,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:01,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-21 19:24:01,991 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2021-10-21 19:24:01,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:01,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798069531] [2021-10-21 19:24:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:01,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:02,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:02,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152680148] [2021-10-21 19:24:02,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:24:02,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:02,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:02,013 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:02,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:24:02,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-21 19:24:02,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:02,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:24:02,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:02,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:02,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798069531] [2021-10-21 19:24:02,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:02,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152680148] [2021-10-21 19:24:02,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152680148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:02,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:02,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:24:02,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150217010] [2021-10-21 19:24:02,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:24:02,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:24:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:24:02,645 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:02,743 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2021-10-21 19:24:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:24:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-21 19:24:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:02,745 INFO L225 Difference]: With dead ends: 119 [2021-10-21 19:24:02,745 INFO L226 Difference]: Without dead ends: 111 [2021-10-21 19:24:02,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:24:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-21 19:24:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-21 19:24:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 110 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2021-10-21 19:24:02,758 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 59 [2021-10-21 19:24:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2021-10-21 19:24:02,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2021-10-21 19:24:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 19:24:02,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:02,760 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:02,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:02,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-21 19:24:02,984 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1856062402, now seen corresponding path program 5 times [2021-10-21 19:24:02,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:02,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427585931] [2021-10-21 19:24:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:02,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:02,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:02,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596601754] [2021-10-21 19:24:02,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:24:02,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:02,997 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:03,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 19:24:04,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 19:24:04,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:04,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:24:04,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:04,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:04,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427585931] [2021-10-21 19:24:04,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:04,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596601754] [2021-10-21 19:24:04,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596601754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:04,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:04,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:24:04,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675734895] [2021-10-21 19:24:04,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:24:04,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:24:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:24:04,673 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 19:24:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:04,761 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-10-21 19:24:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:24:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-10-21 19:24:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:04,763 INFO L225 Difference]: With dead ends: 142 [2021-10-21 19:24:04,763 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:24:04,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:24:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:24:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-10-21 19:24:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 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 19:24:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2021-10-21 19:24:04,779 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 60 [2021-10-21 19:24:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:04,780 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2021-10-21 19:24:04,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 19:24:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2021-10-21 19:24:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-21 19:24:04,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:04,781 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:04,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:04,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:04,990 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:04,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1836406497, now seen corresponding path program 6 times [2021-10-21 19:24:04,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:04,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140959543] [2021-10-21 19:24:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:04,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:05,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:05,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828897261] [2021-10-21 19:24:05,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:24:05,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:05,009 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:05,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:24:05,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-21 19:24:05,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:05,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:24:05,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:05,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:05,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140959543] [2021-10-21 19:24:05,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:05,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828897261] [2021-10-21 19:24:05,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828897261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:05,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:05,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:24:05,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972574464] [2021-10-21 19:24:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:24:05,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:24:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:24:05,730 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:05,850 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-10-21 19:24:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:24:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-21 19:24:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:05,852 INFO L225 Difference]: With dead ends: 141 [2021-10-21 19:24:05,852 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 19:24:05,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:24:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 19:24:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-21 19:24:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 132 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 19:24:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-10-21 19:24:05,867 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 67 [2021-10-21 19:24:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:05,867 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-10-21 19:24:05,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-10-21 19:24:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-21 19:24:05,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:05,869 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:05,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:06,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 19:24:06,092 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash 843932311, now seen corresponding path program 6 times [2021-10-21 19:24:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:06,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324165853] [2021-10-21 19:24:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:06,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:06,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:06,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411385754] [2021-10-21 19:24:06,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:24:06,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:06,105 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:06,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 19:24:06,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-21 19:24:06,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:06,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:24:06,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:07,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:07,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324165853] [2021-10-21 19:24:07,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:07,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411385754] [2021-10-21 19:24:07,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411385754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:07,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:07,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:24:07,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890006712] [2021-10-21 19:24:07,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:24:07,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:24:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:24:07,063 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:07,173 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2021-10-21 19:24:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:24:07,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-21 19:24:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:07,175 INFO L225 Difference]: With dead ends: 164 [2021-10-21 19:24:07,175 INFO L226 Difference]: Without dead ends: 154 [2021-10-21 19:24:07,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:24:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-21 19:24:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-10-21 19:24:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.1258278145695364) internal successors, (170), 152 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2021-10-21 19:24:07,191 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 67 [2021-10-21 19:24:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:07,192 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2021-10-21 19:24:07,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2021-10-21 19:24:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:24:07,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:07,193 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:07,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:07,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 19:24:07,415 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1778423326, now seen corresponding path program 7 times [2021-10-21 19:24:07,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:07,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139868770] [2021-10-21 19:24:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:07,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:07,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:07,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172824311] [2021-10-21 19:24:07,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:24:07,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:07,426 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:07,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 19:24:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:07,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:24:07,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:08,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:08,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139868770] [2021-10-21 19:24:08,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:08,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172824311] [2021-10-21 19:24:08,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172824311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:08,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:08,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:24:08,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157813952] [2021-10-21 19:24:08,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:24:08,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:24:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:24:08,184 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:08,322 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2021-10-21 19:24:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:24:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-10-21 19:24:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:08,325 INFO L225 Difference]: With dead ends: 188 [2021-10-21 19:24:08,325 INFO L226 Difference]: Without dead ends: 176 [2021-10-21 19:24:08,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:24:08,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-21 19:24:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2021-10-21 19:24:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 174 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:24:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2021-10-21 19:24:08,343 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 74 [2021-10-21 19:24:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:08,343 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2021-10-21 19:24:08,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2021-10-21 19:24:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-21 19:24:08,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:08,345 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:08,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:08,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-21 19:24:08,563 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:08,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 8 times [2021-10-21 19:24:08,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:08,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527246396] [2021-10-21 19:24:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:08,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:08,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:08,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19222091] [2021-10-21 19:24:08,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:24:08,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:08,575 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:08,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:24:09,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:24:09,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:09,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:24:09,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:09,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:09,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527246396] [2021-10-21 19:24:09,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:09,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19222091] [2021-10-21 19:24:09,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19222091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:09,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:09,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 19:24:09,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732040519] [2021-10-21 19:24:09,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:24:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:24:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:24:09,453 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:09,608 INFO L93 Difference]: Finished difference Result 210 states and 235 transitions. [2021-10-21 19:24:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:24:09,609 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-21 19:24:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:09,611 INFO L225 Difference]: With dead ends: 210 [2021-10-21 19:24:09,611 INFO L226 Difference]: Without dead ends: 198 [2021-10-21 19:24:09,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:24:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-21 19:24:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-10-21 19:24:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.1282051282051282) internal successors, (220), 196 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 19:24:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-10-21 19:24:09,652 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 81 [2021-10-21 19:24:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:09,652 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-10-21 19:24:09,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-10-21 19:24:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-21 19:24:09,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:09,654 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:09,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-21 19:24:09,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:09,879 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1309693954, now seen corresponding path program 9 times [2021-10-21 19:24:09,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:09,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835970828] [2021-10-21 19:24:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:09,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:09,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:09,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408855817] [2021-10-21 19:24:09,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:24:09,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:09,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:09,893 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:09,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 19:24:10,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-21 19:24:10,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:10,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:24:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:10,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:10,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835970828] [2021-10-21 19:24:10,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:10,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408855817] [2021-10-21 19:24:10,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408855817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:10,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-21 19:24:10,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701298561] [2021-10-21 19:24:10,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:24:10,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:24:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:24:10,907 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:24:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:11,088 INFO L93 Difference]: Finished difference Result 232 states and 260 transitions. [2021-10-21 19:24:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:24:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-10-21 19:24:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:11,090 INFO L225 Difference]: With dead ends: 232 [2021-10-21 19:24:11,090 INFO L226 Difference]: Without dead ends: 220 [2021-10-21 19:24:11,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=163, Invalid=299, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:24:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-21 19:24:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-10-21 19:24:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.1290322580645162) internal successors, (245), 218 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 19:24:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 245 transitions. [2021-10-21 19:24:11,113 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 245 transitions. Word has length 88 [2021-10-21 19:24:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:11,113 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 245 transitions. [2021-10-21 19:24:11,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:24:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 245 transitions. [2021-10-21 19:24:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-21 19:24:11,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:11,119 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:11,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:11,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:11,344 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:11,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:11,345 INFO L82 PathProgramCache]: Analyzing trace with hash -321929513, now seen corresponding path program 10 times [2021-10-21 19:24:11,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:11,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27602914] [2021-10-21 19:24:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:11,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:11,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:11,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785957468] [2021-10-21 19:24:11,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:24:11,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:11,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:11,360 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:11,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-21 19:24:13,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:24:13,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:13,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 19:24:13,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:13,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:13,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27602914] [2021-10-21 19:24:13,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:13,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785957468] [2021-10-21 19:24:13,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785957468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:13,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:13,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-21 19:24:13,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417805905] [2021-10-21 19:24:13,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:24:13,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:24:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:24:13,975 INFO L87 Difference]: Start difference. First operand 219 states and 245 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:14,167 INFO L93 Difference]: Finished difference Result 254 states and 285 transitions. [2021-10-21 19:24:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 19:24:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-21 19:24:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:14,170 INFO L225 Difference]: With dead ends: 254 [2021-10-21 19:24:14,170 INFO L226 Difference]: Without dead ends: 242 [2021-10-21 19:24:14,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:24:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-21 19:24:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2021-10-21 19:24:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 239 states have (on average 1.1297071129707112) internal successors, (270), 240 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 19:24:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2021-10-21 19:24:14,197 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 95 [2021-10-21 19:24:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:14,198 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2021-10-21 19:24:14,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2021-10-21 19:24:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-21 19:24:14,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:14,200 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:14,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:14,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-21 19:24:14,410 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:14,411 INFO L82 PathProgramCache]: Analyzing trace with hash 497676766, now seen corresponding path program 11 times [2021-10-21 19:24:14,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:14,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270402713] [2021-10-21 19:24:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:14,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:14,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:14,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520272012] [2021-10-21 19:24:14,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:24:14,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:14,435 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:14,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-21 19:24:36,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-21 19:24:36,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:36,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 19:24:36,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:37,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:37,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270402713] [2021-10-21 19:24:37,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:37,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520272012] [2021-10-21 19:24:37,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520272012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:37,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:37,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-21 19:24:37,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472418206] [2021-10-21 19:24:37,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:24:37,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:24:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:24:37,158 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 19:24:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:37,371 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2021-10-21 19:24:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 19:24:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-10-21 19:24:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:37,374 INFO L225 Difference]: With dead ends: 276 [2021-10-21 19:24:37,374 INFO L226 Difference]: Without dead ends: 264 [2021-10-21 19:24:37,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 219.6ms TimeCoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:24:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-21 19:24:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2021-10-21 19:24:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 1.1302681992337165) internal successors, (295), 262 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 19:24:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 295 transitions. [2021-10-21 19:24:37,401 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 295 transitions. Word has length 102 [2021-10-21 19:24:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:37,401 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 295 transitions. [2021-10-21 19:24:37,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 19:24:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 295 transitions. [2021-10-21 19:24:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-21 19:24:37,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:37,403 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:37,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:37,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-21 19:24:37,617 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash -693593865, now seen corresponding path program 12 times [2021-10-21 19:24:37,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:37,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140257371] [2021-10-21 19:24:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:37,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:37,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:37,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728309247] [2021-10-21 19:24:37,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:24:37,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:37,642 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:37,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 19:24:38,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-21 19:24:38,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:38,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:24:38,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 173 proven. 87 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-21 19:24:39,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:39,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140257371] [2021-10-21 19:24:39,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:39,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728309247] [2021-10-21 19:24:39,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728309247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:39,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:39,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:24:39,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238254685] [2021-10-21 19:24:39,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:24:39,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:39,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:24:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:24:39,290 INFO L87 Difference]: Start difference. First operand 263 states and 295 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 19:24:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:39,579 INFO L93 Difference]: Finished difference Result 396 states and 446 transitions. [2021-10-21 19:24:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:24:39,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 109 [2021-10-21 19:24:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:39,582 INFO L225 Difference]: With dead ends: 396 [2021-10-21 19:24:39,582 INFO L226 Difference]: Without dead ends: 249 [2021-10-21 19:24:39,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:24:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-21 19:24:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-10-21 19:24:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.125506072874494) internal successors, (278), 248 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 19:24:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2021-10-21 19:24:39,613 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 109 [2021-10-21 19:24:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:39,614 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2021-10-21 19:24:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 19:24:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2021-10-21 19:24:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-21 19:24:39,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:39,616 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:39,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:39,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:39,844 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:39,845 INFO L82 PathProgramCache]: Analyzing trace with hash -554060688, now seen corresponding path program 13 times [2021-10-21 19:24:39,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:39,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735933506] [2021-10-21 19:24:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:39,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:39,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:39,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186911256] [2021-10-21 19:24:39,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:24:39,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:39,861 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:39,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 19:24:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:40,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:24:40,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:41,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:41,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735933506] [2021-10-21 19:24:41,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:41,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186911256] [2021-10-21 19:24:41,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186911256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:41,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:41,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-21 19:24:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075100055] [2021-10-21 19:24:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:24:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:24:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:24:41,199 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:41,460 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-21 19:24:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:24:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-21 19:24:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:41,463 INFO L225 Difference]: With dead ends: 284 [2021-10-21 19:24:41,463 INFO L226 Difference]: Without dead ends: 272 [2021-10-21 19:24:41,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 266.4ms TimeCoverageRelationStatistics Valid=246, Invalid=456, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:24:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-21 19:24:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2021-10-21 19:24:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 269 states have (on average 1.1263940520446096) internal successors, (303), 270 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 19:24:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 303 transitions. [2021-10-21 19:24:41,496 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 303 transitions. Word has length 110 [2021-10-21 19:24:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:41,496 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 303 transitions. [2021-10-21 19:24:41,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 303 transitions. [2021-10-21 19:24:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-21 19:24:41,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:41,499 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:41,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:41,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:41,720 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1327092187, now seen corresponding path program 14 times [2021-10-21 19:24:41,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:41,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663291232] [2021-10-21 19:24:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:41,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:41,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:41,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185632006] [2021-10-21 19:24:41,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:24:41,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:41,739 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:41,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 19:24:42,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:24:42,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:42,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 19:24:42,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:43,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:43,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663291232] [2021-10-21 19:24:43,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:43,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185632006] [2021-10-21 19:24:43,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185632006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:43,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:43,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-21 19:24:43,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771318728] [2021-10-21 19:24:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:24:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:24:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:24:43,166 INFO L87 Difference]: Start difference. First operand 271 states and 303 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:43,447 INFO L93 Difference]: Finished difference Result 306 states and 343 transitions. [2021-10-21 19:24:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-21 19:24:43,448 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-21 19:24:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:43,451 INFO L225 Difference]: With dead ends: 306 [2021-10-21 19:24:43,451 INFO L226 Difference]: Without dead ends: 294 [2021-10-21 19:24:43,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 278.8ms TimeCoverageRelationStatistics Valid=285, Invalid=527, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:24:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-21 19:24:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-10-21 19:24:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.127147766323024) internal successors, (328), 292 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 19:24:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 328 transitions. [2021-10-21 19:24:43,485 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 328 transitions. Word has length 117 [2021-10-21 19:24:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:43,486 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 328 transitions. [2021-10-21 19:24:43,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 328 transitions. [2021-10-21 19:24:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-21 19:24:43,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:43,489 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:43,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:43,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-21 19:24:43,716 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash -35369264, now seen corresponding path program 15 times [2021-10-21 19:24:43,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:43,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624307335] [2021-10-21 19:24:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:43,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:43,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:43,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382082087] [2021-10-21 19:24:43,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:24:43,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:43,733 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:43,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-21 19:24:44,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-21 19:24:44,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-21 19:24:44,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:45,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:45,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624307335] [2021-10-21 19:24:45,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:45,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382082087] [2021-10-21 19:24:45,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382082087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:45,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:45,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-21 19:24:45,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079460224] [2021-10-21 19:24:45,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-21 19:24:45,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:24:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:24:45,332 INFO L87 Difference]: Start difference. First operand 293 states and 328 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:24:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:45,615 INFO L93 Difference]: Finished difference Result 328 states and 368 transitions. [2021-10-21 19:24:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 19:24:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-10-21 19:24:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:45,618 INFO L225 Difference]: With dead ends: 328 [2021-10-21 19:24:45,619 INFO L226 Difference]: Without dead ends: 316 [2021-10-21 19:24:45,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:24:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-21 19:24:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-10-21 19:24:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 313 states have (on average 1.1277955271565496) internal successors, (353), 314 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 19:24:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 353 transitions. [2021-10-21 19:24:45,653 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 353 transitions. Word has length 124 [2021-10-21 19:24:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:45,654 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 353 transitions. [2021-10-21 19:24:45,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:24:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 353 transitions. [2021-10-21 19:24:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-21 19:24:45,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:45,656 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:45,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-21 19:24:45,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-21 19:24:45,872 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1076570053, now seen corresponding path program 16 times [2021-10-21 19:24:45,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:45,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451893434] [2021-10-21 19:24:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:45,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:45,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:45,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405982286] [2021-10-21 19:24:45,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:24:45,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:45,892 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:45,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-21 19:24:49,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:24:49,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:24:49,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 19:24:49,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:24:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 0 proven. 566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:24:50,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:50,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451893434] [2021-10-21 19:24:50,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:24:50,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405982286] [2021-10-21 19:24:50,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405982286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:24:50,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:24:50,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-21 19:24:50,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959663194] [2021-10-21 19:24:50,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:24:50,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:24:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:24:50,221 INFO L87 Difference]: Start difference. First operand 315 states and 353 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 19:24:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:50,565 INFO L93 Difference]: Finished difference Result 350 states and 393 transitions. [2021-10-21 19:24:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-21 19:24:50,566 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-10-21 19:24:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:24:50,569 INFO L225 Difference]: With dead ends: 350 [2021-10-21 19:24:50,569 INFO L226 Difference]: Without dead ends: 338 [2021-10-21 19:24:50,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 332.6ms TimeCoverageRelationStatistics Valid=372, Invalid=684, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:24:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-21 19:24:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2021-10-21 19:24:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.128358208955224) internal successors, (378), 336 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 19:24:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 378 transitions. [2021-10-21 19:24:50,610 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 378 transitions. Word has length 131 [2021-10-21 19:24:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:24:50,611 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 378 transitions. [2021-10-21 19:24:50,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 19:24:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 378 transitions. [2021-10-21 19:24:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-21 19:24:50,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:24:50,621 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:50,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:24:50,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-21 19:24:50,834 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:24:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1803632944, now seen corresponding path program 17 times [2021-10-21 19:24:50,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:50,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447319515] [2021-10-21 19:24:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:50,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:50,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:24:50,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114319828] [2021-10-21 19:24:50,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:24:50,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:24:50,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:50,862 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:24:50,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-21 19:33:02,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-21 19:33:02,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:02,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-21 19:33:02,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:03,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:03,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447319515] [2021-10-21 19:33:03,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:03,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114319828] [2021-10-21 19:33:03,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114319828] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:03,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:03,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-21 19:33:03,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064887316] [2021-10-21 19:33:03,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:33:03,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:33:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:33:03,285 INFO L87 Difference]: Start difference. First operand 337 states and 378 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:03,556 INFO L93 Difference]: Finished difference Result 372 states and 418 transitions. [2021-10-21 19:33:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:33:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-21 19:33:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:03,559 INFO L225 Difference]: With dead ends: 372 [2021-10-21 19:33:03,559 INFO L226 Difference]: Without dead ends: 360 [2021-10-21 19:33:03,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 277.8ms TimeCoverageRelationStatistics Valid=420, Invalid=770, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:33:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-21 19:33:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2021-10-21 19:33:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 357 states have (on average 1.1288515406162465) internal successors, (403), 358 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 19:33:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 403 transitions. [2021-10-21 19:33:03,603 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 403 transitions. Word has length 138 [2021-10-21 19:33:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:03,604 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 403 transitions. [2021-10-21 19:33:03,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 403 transitions. [2021-10-21 19:33:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-21 19:33:03,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:03,606 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:03,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:03,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-21 19:33:03,828 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1542113637, now seen corresponding path program 18 times [2021-10-21 19:33:03,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:03,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677135742] [2021-10-21 19:33:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:03,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:03,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:03,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59717785] [2021-10-21 19:33:03,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:33:03,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:03,842 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:03,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-21 19:33:04,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-21 19:33:04,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:05,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-21 19:33:05,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 320 proven. 146 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-21 19:33:06,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:06,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677135742] [2021-10-21 19:33:06,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:06,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59717785] [2021-10-21 19:33:06,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59717785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:06,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:06,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:33:06,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441198385] [2021-10-21 19:33:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:33:06,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:33:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:33:06,463 INFO L87 Difference]: Start difference. First operand 359 states and 403 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:06,772 INFO L93 Difference]: Finished difference Result 548 states and 618 transitions. [2021-10-21 19:33:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:33:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-10-21 19:33:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:06,775 INFO L225 Difference]: With dead ends: 548 [2021-10-21 19:33:06,775 INFO L226 Difference]: Without dead ends: 345 [2021-10-21 19:33:06,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 181.9ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:33:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-10-21 19:33:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-10-21 19:33:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 343 states have (on average 1.1253644314868805) internal successors, (386), 344 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 19:33:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 386 transitions. [2021-10-21 19:33:06,819 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 386 transitions. Word has length 145 [2021-10-21 19:33:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:06,819 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 386 transitions. [2021-10-21 19:33:06,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 386 transitions. [2021-10-21 19:33:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-21 19:33:06,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:06,822 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:06,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:07,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:07,036 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1431216834, now seen corresponding path program 19 times [2021-10-21 19:33:07,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:07,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107605628] [2021-10-21 19:33:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:07,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:07,050 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:07,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849202270] [2021-10-21 19:33:07,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:33:07,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:07,051 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:07,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-21 19:33:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:08,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-21 19:33:08,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:08,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:08,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107605628] [2021-10-21 19:33:08,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:08,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849202270] [2021-10-21 19:33:08,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849202270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:08,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:08,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-21 19:33:08,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035070231] [2021-10-21 19:33:08,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:33:08,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:33:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:33:08,654 INFO L87 Difference]: Start difference. First operand 345 states and 386 transitions. Second operand has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:08,950 INFO L93 Difference]: Finished difference Result 380 states and 426 transitions. [2021-10-21 19:33:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-21 19:33:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-10-21 19:33:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:08,953 INFO L225 Difference]: With dead ends: 380 [2021-10-21 19:33:08,953 INFO L226 Difference]: Without dead ends: 368 [2021-10-21 19:33:08,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 342.2ms TimeCoverageRelationStatistics Valid=441, Invalid=819, Unknown=0, NotChecked=0, Total=1260 [2021-10-21 19:33:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-21 19:33:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2021-10-21 19:33:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 365 states have (on average 1.126027397260274) internal successors, (411), 366 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 19:33:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 411 transitions. [2021-10-21 19:33:09,002 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 411 transitions. Word has length 146 [2021-10-21 19:33:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:09,005 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 411 transitions. [2021-10-21 19:33:09,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 411 transitions. [2021-10-21 19:33:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-21 19:33:09,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:09,007 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:09,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:09,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:09,220 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:09,221 INFO L82 PathProgramCache]: Analyzing trace with hash -773202029, now seen corresponding path program 20 times [2021-10-21 19:33:09,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:09,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143315364] [2021-10-21 19:33:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:09,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:09,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:09,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718294902] [2021-10-21 19:33:09,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:33:09,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:09,235 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:09,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-21 19:33:10,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:33:10,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:10,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:33:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 345 proven. 220 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-21 19:33:10,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:10,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143315364] [2021-10-21 19:33:10,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:10,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718294902] [2021-10-21 19:33:10,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718294902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:10,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:10,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:33:10,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131909981] [2021-10-21 19:33:10,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:33:10,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:33:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:33:10,681 INFO L87 Difference]: Start difference. First operand 367 states and 411 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 19:33:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:10,825 INFO L93 Difference]: Finished difference Result 556 states and 626 transitions. [2021-10-21 19:33:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:33:10,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-10-21 19:33:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:10,828 INFO L225 Difference]: With dead ends: 556 [2021-10-21 19:33:10,828 INFO L226 Difference]: Without dead ends: 353 [2021-10-21 19:33:10,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:33:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-10-21 19:33:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-10-21 19:33:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1225071225071226) internal successors, (394), 352 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 19:33:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2021-10-21 19:33:10,875 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 153 [2021-10-21 19:33:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:10,876 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2021-10-21 19:33:10,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 19:33:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2021-10-21 19:33:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-21 19:33:10,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:10,878 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:10,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-21 19:33:11,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-21 19:33:11,080 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1624092076, now seen corresponding path program 21 times [2021-10-21 19:33:11,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:11,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726451720] [2021-10-21 19:33:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:11,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:11,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:11,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301296386] [2021-10-21 19:33:11,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:33:11,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:11,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:11,111 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:11,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-21 19:33:12,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-10-21 19:33:12,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:12,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 19:33:12,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 308 proven. 309 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-21 19:33:13,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:13,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726451720] [2021-10-21 19:33:13,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:13,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301296386] [2021-10-21 19:33:13,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301296386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:13,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:13,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:33:13,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25052357] [2021-10-21 19:33:13,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:33:13,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:33:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:33:13,011 INFO L87 Difference]: Start difference. First operand 353 states and 394 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:13,185 INFO L93 Difference]: Finished difference Result 528 states and 593 transitions. [2021-10-21 19:33:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:33:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-21 19:33:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:13,187 INFO L225 Difference]: With dead ends: 528 [2021-10-21 19:33:13,188 INFO L226 Difference]: Without dead ends: 339 [2021-10-21 19:33:13,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:33:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-21 19:33:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-10-21 19:33:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 337 states have (on average 1.1186943620178043) internal successors, (377), 338 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 19:33:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 377 transitions. [2021-10-21 19:33:13,222 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 377 transitions. Word has length 154 [2021-10-21 19:33:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 377 transitions. [2021-10-21 19:33:13,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 377 transitions. [2021-10-21 19:33:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-21 19:33:13,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:13,226 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:13,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:13,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:13,440 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:13,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1808426545, now seen corresponding path program 22 times [2021-10-21 19:33:13,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:13,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917982540] [2021-10-21 19:33:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:13,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:13,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:13,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404986856] [2021-10-21 19:33:13,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:33:13,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:13,477 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:13,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-21 19:33:14,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:33:14,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:33:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:33:14,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 243 proven. 413 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-21 19:33:15,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:15,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917982540] [2021-10-21 19:33:15,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:33:15,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404986856] [2021-10-21 19:33:15,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404986856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:33:15,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:33:15,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:33:15,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225552060] [2021-10-21 19:33:15,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:33:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:33:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:33:15,403 INFO L87 Difference]: Start difference. First operand 339 states and 377 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 19:33:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:15,578 INFO L93 Difference]: Finished difference Result 500 states and 560 transitions. [2021-10-21 19:33:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:33:15,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 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 155 [2021-10-21 19:33:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:15,580 INFO L225 Difference]: With dead ends: 500 [2021-10-21 19:33:15,580 INFO L226 Difference]: Without dead ends: 325 [2021-10-21 19:33:15,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:33:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-21 19:33:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-10-21 19:33:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 323 states have (on average 1.1145510835913313) internal successors, (360), 324 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 19:33:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 360 transitions. [2021-10-21 19:33:15,612 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 360 transitions. Word has length 155 [2021-10-21 19:33:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:15,612 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 360 transitions. [2021-10-21 19:33:15,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 19:33:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 360 transitions. [2021-10-21 19:33:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-10-21 19:33:15,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:15,632 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:15,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-21 19:33:15,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:15,852 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:33:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1571014424, now seen corresponding path program 23 times [2021-10-21 19:33:15,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:15,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341680449] [2021-10-21 19:33:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:15,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:15,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:33:15,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537787796] [2021-10-21 19:33:15,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:33:15,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:33:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:15,867 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:33:15,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-21 19:34:24,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-21 19:34:24,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:34:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-21 19:34:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:34:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 150 proven. 532 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 19:34:24,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:34:24,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341680449] [2021-10-21 19:34:24,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:34:24,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537787796] [2021-10-21 19:34:24,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537787796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:34:24,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:34:24,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:34:24,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961162775] [2021-10-21 19:34:24,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:34:24,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:34:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:34:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:34:24,544 INFO L87 Difference]: Start difference. First operand 325 states and 360 transitions. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 19:34:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:34:24,748 INFO L93 Difference]: Finished difference Result 472 states and 527 transitions. [2021-10-21 19:34:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:34:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 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 156 [2021-10-21 19:34:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:34:24,751 INFO L225 Difference]: With dead ends: 472 [2021-10-21 19:34:24,751 INFO L226 Difference]: Without dead ends: 311 [2021-10-21 19:34:24,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:34:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-21 19:34:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-10-21 19:34:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 309 states have (on average 1.110032362459547) internal successors, (343), 310 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 19:34:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 343 transitions. [2021-10-21 19:34:24,786 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 343 transitions. Word has length 156 [2021-10-21 19:34:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:34:24,787 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 343 transitions. [2021-10-21 19:34:24,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 19:34:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 343 transitions. [2021-10-21 19:34:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-21 19:34:24,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:34:24,789 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:34:24,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-21 19:34:25,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-21 19:34:25,002 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:34:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 255477259, now seen corresponding path program 24 times [2021-10-21 19:34:25,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:25,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948837016] [2021-10-21 19:34:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:25,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:25,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:34:25,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798250601] [2021-10-21 19:34:25,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:34:25,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:34:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:34:25,050 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:34:25,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-21 19:34:26,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-21 19:34:26,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:34:26,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-21 19:34:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:34:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 29 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:34:30,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:34:30,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948837016] [2021-10-21 19:34:30,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:34:30,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798250601] [2021-10-21 19:34:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798250601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:34:30,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:34:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-10-21 19:34:30,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233460188] [2021-10-21 19:34:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-21 19:34:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:34:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-21 19:34:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:34:30,184 INFO L87 Difference]: Start difference. First operand 311 states and 343 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 19:34:32,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:34:32,676 INFO L93 Difference]: Finished difference Result 499 states and 556 transitions. [2021-10-21 19:34:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 19:34:32,677 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-10-21 19:34:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:34:32,678 INFO L225 Difference]: With dead ends: 499 [2021-10-21 19:34:32,678 INFO L226 Difference]: Without dead ends: 297 [2021-10-21 19:34:32,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1139.2ms TimeCoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:34:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-21 19:34:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-10-21 19:34:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.1050847457627118) internal successors, (326), 296 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 19:34:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2021-10-21 19:34:32,707 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 157 [2021-10-21 19:34:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:34:32,707 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2021-10-21 19:34:32,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 19:34:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2021-10-21 19:34:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-21 19:34:32,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:34:32,709 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:34:32,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-21 19:34:32,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-21 19:34:32,932 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:34:32,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:34:32,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1197626916, now seen corresponding path program 25 times [2021-10-21 19:34:32,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:34:32,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492677228] [2021-10-21 19:34:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:34:32,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:34:32,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:34:32,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960661342] [2021-10-21 19:34:32,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:34:32,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:34:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:34:32,948 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:34:32,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-21 19:34:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:35,013 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:34:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:34:35,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:35,259 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:34:35,260 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:34:35,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:34:35,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:34:35,491 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:34:35,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:34:35 BoogieIcfgContainer [2021-10-21 19:34:35,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:34:35,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:34:35,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:34:35,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:34:35,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:41" (3/4) ... [2021-10-21 19:34:35,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:34:35,721 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:34:35,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:34:35,723 INFO L168 Benchmark]: Toolchain (without parser) took 654840.90 ms. Allocated memory was 88.1 MB in the beginning and 312.5 MB in the end (delta: 224.4 MB). Free memory was 51.8 MB in the beginning and 57.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 219.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,723 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:34:35,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.60 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 51.6 MB in the beginning and 94.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 119.5 MB. Free memory was 94.5 MB in the beginning and 93.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,725 INFO L168 Benchmark]: Boogie Preprocessor took 29.94 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 91.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,726 INFO L168 Benchmark]: RCFGBuilder took 465.51 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 80.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,727 INFO L168 Benchmark]: TraceAbstraction took 653824.13 ms. Allocated memory was 119.5 MB in the beginning and 312.5 MB in the end (delta: 192.9 MB). Free memory was 80.4 MB in the beginning and 67.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 207.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,728 INFO L168 Benchmark]: Witness Printer took 119.75 ms. Allocated memory is still 312.5 MB. Free memory was 67.7 MB in the beginning and 57.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:34:35,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.60 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 51.6 MB in the beginning and 94.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.48 ms. Allocated memory is still 119.5 MB. Free memory was 94.5 MB in the beginning and 93.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.94 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 91.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 465.51 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 80.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 653824.13 ms. Allocated memory was 119.5 MB in the beginning and 312.5 MB in the end (delta: 192.9 MB). Free memory was 80.4 MB in the beginning and 67.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 207.2 MB. Max. memory is 16.1 GB. * Witness Printer took 119.75 ms. Allocated memory is still 312.5 MB. Free memory was 67.7 MB in the beginning and 57.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=6] [L34] EXPR counter++ VAL [counter=7] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=7] [L34] EXPR counter++ VAL [counter=8] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=8] [L34] EXPR counter++ VAL [counter=9] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=9] [L34] EXPR counter++ VAL [counter=10] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=10] [L34] EXPR counter++ VAL [counter=11] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L38] COND TRUE !(r >= d) VAL [counter=11] [L44] EXPR counter++ VAL [counter=12] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=12] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=12] [L44] EXPR counter++ VAL [counter=13] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=13] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=13] [L44] EXPR counter++ VAL [counter=14] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=14] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=14] [L44] EXPR counter++ VAL [counter=15] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=15] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=15] [L44] EXPR counter++ VAL [counter=16] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=16] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=16] [L44] EXPR counter++ VAL [counter=17] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=17] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=17] [L44] EXPR counter++ VAL [counter=18] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=18] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=18] [L44] EXPR counter++ VAL [counter=19] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=19] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=19] [L44] EXPR counter++ VAL [counter=20] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=20] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=20] [L44] EXPR counter++ VAL [counter=21] [L44] COND FALSE !(counter++<20) [L15] COND TRUE !(cond) VAL [counter=21] [L17] reach_error() VAL [counter=21] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 653583.2ms, OverallIterations: 47, TraceHistogramMax: 15, EmptinessCheckTime: 104.3ms, AutomataDifference: 9617.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1598 SDtfs, 4349 SDslu, 9685 SDs, 0 SdLazy, 5395 SolverSat, 765 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4567.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3332 GetRequests, 2744 SyntacticMatches, 4 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 5734.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=41, InterpolantAutomatonStates: 637, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 966.3ms AutomataMinimizationTime, 46 MinimizatonAttempts, 188 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 488.9ms SsaConstructionTime, 589292.6ms SatisfiabilityAnalysisTime, 20312.1ms InterpolantComputationTime, 3354 NumberOfCodeBlocks, 3256 NumberOfCodeBlocksAsserted, 182 NumberOfCheckSat, 3150 ConstructedInterpolants, 1 QuantifiedInterpolants, 14489 SizeOfPredicates, 304 NumberOfNonLiveVariables, 11776 ConjunctsInSsa, 979 ConjunctsInUnsatCore, 46 InterpolantComputations, 6 PerfectInterpolantSequences, 2508/10028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:34:35,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730aa57-27d7-47a5-b3f9-5022e5296975/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...