./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN --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 a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:12:14,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:12:14,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:12:14,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:12:14,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:12:14,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:12:14,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:12:14,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:12:14,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:12:14,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:12:14,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:12:14,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:12:14,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:12:14,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:12:14,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:12:14,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:12:14,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:12:14,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:12:14,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:12:14,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:12:14,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:12:14,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:12:14,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:12:14,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:12:14,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:12:14,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:12:14,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:12:14,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:12:14,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:12:14,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:12:14,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:12:14,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:12:14,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:12:14,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:12:14,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:12:14,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:12:14,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:12:14,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:12:14,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:12:14,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:12:14,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:12:14,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:12:14,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:12:14,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:12:14,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:12:14,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:12:14,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:12:14,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:12:14,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:12:14,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:12:14,445 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:12:14,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:12:14,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:12:14,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:12:14,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:12:14,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:12:14,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:12:14,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:12:14,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:12:14,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:12:14,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:12:14,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:12:14,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:12:14,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:12:14,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:12:14,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:12:14,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:12:14,450 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:12:14,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:12:14,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:12:14,451 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_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 [2022-11-20 12:12:14,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:12:14,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:12:14,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:12:14,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:12:14,764 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:12:14,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2022-11-20 12:12:17,828 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:12:18,019 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:12:18,020 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2022-11-20 12:12:18,025 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/data/92b27fa3a/2af7bb7ea20540718a45a11fee3374fa/FLAGb7c6b7675 [2022-11-20 12:12:18,039 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/data/92b27fa3a/2af7bb7ea20540718a45a11fee3374fa [2022-11-20 12:12:18,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:12:18,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:12:18,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:12:18,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:12:18,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:12:18,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cb6e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18, skipping insertion in model container [2022-11-20 12:12:18,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:12:18,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:12:18,273 WARN L237 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_b5fd79fb-5906-40a6-8245-105006428f32/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2022-11-20 12:12:18,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:12:18,306 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:12:18,319 WARN L237 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_b5fd79fb-5906-40a6-8245-105006428f32/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2022-11-20 12:12:18,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:12:18,353 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:12:18,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18 WrapperNode [2022-11-20 12:12:18,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:12:18,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:12:18,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:12:18,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:12:18,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,389 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-20 12:12:18,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:12:18,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:12:18,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:12:18,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:12:18,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:12:18,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:12:18,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:12:18,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:12:18,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (1/1) ... [2022-11-20 12:12:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:12:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:18,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:12:18,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:12:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:12:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:12:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:12:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:12:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:12:18,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:12:18,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:12:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:12:18,598 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:12:18,600 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:12:18,805 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:12:18,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:12:18,813 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:12:18,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:12:18 BoogieIcfgContainer [2022-11-20 12:12:18,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:12:18,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:12:18,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:12:18,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:12:18,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:12:18" (1/3) ... [2022-11-20 12:12:18,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2359ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:12:18, skipping insertion in model container [2022-11-20 12:12:18,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:12:18" (2/3) ... [2022-11-20 12:12:18,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2359ecf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:12:18, skipping insertion in model container [2022-11-20 12:12:18,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:12:18" (3/3) ... [2022-11-20 12:12:18,836 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2022-11-20 12:12:18,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:12:18,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:12:18,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:12:18,923 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36f60700, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:12:18,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:12:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) [2022-11-20 12:12:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 12:12:18,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:18,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:18,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2005182879, now seen corresponding path program 1 times [2022-11-20 12:12:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746211872] [2022-11-20 12:12:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:18,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:19,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746211872] [2022-11-20 12:12:19,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746211872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:19,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:19,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963935200] [2022-11-20 12:12:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:19,240 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:19,282 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2022-11-20 12:12:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 12:12:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:19,292 INFO L225 Difference]: With dead ends: 39 [2022-11-20 12:12:19,292 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 12:12:19,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:19,298 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:19,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:12:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 12:12:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-11-20 12:12:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-20 12:12:19,332 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2022-11-20 12:12:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:19,332 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-20 12:12:19,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-20 12:12:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:12:19,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:19,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:19,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:12:19,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:19,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1959207727, now seen corresponding path program 1 times [2022-11-20 12:12:19,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923867715] [2022-11-20 12:12:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:19,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923867715] [2022-11-20 12:12:19,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923867715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866104325] [2022-11-20 12:12:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:19,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:19,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:19,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:12:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:19,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:12:19,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:19,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866104325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:19,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 12:12:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424830461] [2022-11-20 12:12:19,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:19,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:12:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:12:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:19,712 INFO L87 Difference]: Start difference. First operand 17 states and 20 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) [2022-11-20 12:12:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:19,778 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-11-20 12:12:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:12:19,784 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 14 [2022-11-20 12:12:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:19,787 INFO L225 Difference]: With dead ends: 44 [2022-11-20 12:12:19,788 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 12:12:19,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:12:19,790 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:19,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:12:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 12:12:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:12:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 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) [2022-11-20 12:12:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-20 12:12:19,806 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2022-11-20 12:12:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:19,807 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-20 12:12:19,807 INFO L496 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) [2022-11-20 12:12:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-20 12:12:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:12:19,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:19,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:19,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:20,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:20,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1208394382, now seen corresponding path program 2 times [2022-11-20 12:12:20,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:20,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830034000] [2022-11-20 12:12:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:20,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:12:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:20,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830034000] [2022-11-20 12:12:20,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830034000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:20,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483571116] [2022-11-20 12:12:20,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:20,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:20,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:20,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:20,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:12:20,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:12:20,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:20,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:12:20,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:12:20,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:12:20,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483571116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:20,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:20,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 12:12:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324992561] [2022-11-20 12:12:20,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:12:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:12:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:12:20,550 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:20,663 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2022-11-20 12:12:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:12:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 12:12:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:20,664 INFO L225 Difference]: With dead ends: 83 [2022-11-20 12:12:20,664 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 12:12:20,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:12:20,666 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:20,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 47 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:12:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 12:12:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 12:12:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 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) [2022-11-20 12:12:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-11-20 12:12:20,675 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 29 [2022-11-20 12:12:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:20,676 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-11-20 12:12:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-11-20 12:12:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:12:20,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:20,678 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:20,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:20,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:20,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1285339298, now seen corresponding path program 3 times [2022-11-20 12:12:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:20,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475293829] [2022-11-20 12:12:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 12:12:21,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475293829] [2022-11-20 12:12:21,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475293829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169612191] [2022-11-20 12:12:21,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:12:21,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:21,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:21,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:12:21,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 12:12:21,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:21,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:12:21,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 12:12:21,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 12:12:21,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169612191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:21,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:21,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-20 12:12:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667470957] [2022-11-20 12:12:21,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:12:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:12:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:12:21,967 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:22,205 INFO L93 Difference]: Finished difference Result 161 states and 220 transitions. [2022-11-20 12:12:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:12:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-20 12:12:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:22,214 INFO L225 Difference]: With dead ends: 161 [2022-11-20 12:12:22,214 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 12:12:22,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:12:22,220 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 155 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 83 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:12:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 12:12:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-20 12:12:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 121 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) [2022-11-20 12:12:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2022-11-20 12:12:22,245 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 59 [2022-11-20 12:12:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:22,249 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2022-11-20 12:12:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2022-11-20 12:12:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 12:12:22,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:22,257 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:22,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:22,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:22,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1971297078, now seen corresponding path program 4 times [2022-11-20 12:12:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940000845] [2022-11-20 12:12:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:22,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-20 12:12:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940000845] [2022-11-20 12:12:23,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940000845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698346433] [2022-11-20 12:12:23,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:12:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:23,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:23,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:12:23,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:12:23,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:12:23,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-20 12:12:23,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-20 12:12:24,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698346433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:24,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:24,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-20 12:12:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329633392] [2022-11-20 12:12:24,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:12:24,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:12:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 12:12:24,677 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:25,356 INFO L93 Difference]: Finished difference Result 317 states and 436 transitions. [2022-11-20 12:12:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:12:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-11-20 12:12:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:25,358 INFO L225 Difference]: With dead ends: 317 [2022-11-20 12:12:25,359 INFO L226 Difference]: Without dead ends: 242 [2022-11-20 12:12:25,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 12:12:25,361 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 534 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:25,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 75 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:12:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-20 12:12:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-11-20 12:12:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.2033195020746887) internal successors, (290), 241 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2022-11-20 12:12:25,391 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 119 [2022-11-20 12:12:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:25,392 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2022-11-20 12:12:25,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2022-11-20 12:12:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 12:12:25,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:25,395 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:25,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:25,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:25,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1676624614, now seen corresponding path program 5 times [2022-11-20 12:12:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:25,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610719044] [2022-11-20 12:12:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-11-20 12:12:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610719044] [2022-11-20 12:12:28,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610719044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785939524] [2022-11-20 12:12:28,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:12:28,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:28,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:28,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:14:18,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-11-20 12:14:18,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:18,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 12:14:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-11-20 12:14:18,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-11-20 12:14:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785939524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:22,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:22,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-11-20 12:14:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539864572] [2022-11-20 12:14:22,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:22,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-20 12:14:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-20 12:14:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-20 12:14:22,229 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:24,404 INFO L93 Difference]: Finished difference Result 629 states and 868 transitions. [2022-11-20 12:14:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-20 12:14:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 0 states have call successors, (0), 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 239 [2022-11-20 12:14:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:24,407 INFO L225 Difference]: With dead ends: 629 [2022-11-20 12:14:24,408 INFO L226 Difference]: Without dead ends: 482 [2022-11-20 12:14:24,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-11-20 12:14:24,412 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1130 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:24,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 138 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:14:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-20 12:14:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-11-20 12:14:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.2016632016632016) internal successors, (578), 481 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 578 transitions. [2022-11-20 12:14:24,440 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 578 transitions. Word has length 239 [2022-11-20 12:14:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:24,440 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 578 transitions. [2022-11-20 12:14:24,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.0) internal successors, (388), 97 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:14:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 578 transitions. [2022-11-20 12:14:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-20 12:14:24,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:24,459 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:24,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:24,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:24,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 833449402, now seen corresponding path program 6 times [2022-11-20 12:14:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863754913] [2022-11-20 12:14:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 13207 trivial. 0 not checked. [2022-11-20 12:14:34,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:34,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863754913] [2022-11-20 12:14:34,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863754913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:34,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778646730] [2022-11-20 12:14:34,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:14:34,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:34,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:34,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:34,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5fd79fb-5906-40a6-8245-105006428f32/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process