./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ --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 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e --- 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-dbf71c6-m [2022-10-17 10:12:19,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:12:19,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:12:19,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:12:19,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:12:19,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:12:19,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:12:19,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:12:19,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:12:19,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:12:19,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:12:19,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:12:19,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:12:19,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:12:19,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:12:19,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:12:19,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:12:19,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:12:19,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:12:19,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:12:19,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:12:19,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:12:19,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:12:19,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:12:19,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:12:19,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:12:19,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:12:19,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:12:19,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:12:19,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:12:19,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:12:19,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:12:19,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:12:19,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:12:19,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:12:19,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:12:19,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:12:19,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:12:19,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:12:19,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:12:19,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:12:19,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:12:19,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:12:19,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:12:19,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:12:19,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:12:19,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:12:19,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:12:19,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:12:19,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:12:19,540 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:12:19,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:12:19,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:12:19,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:12:19,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:12:19,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:12:19,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:12:19,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:12:19,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:12:19,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:12:19,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:12:19,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:12:19,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:12:19,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:12:19,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:12:19,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:12:19,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:19,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:12:19,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:12:19,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:12:19,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:12:19,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:12:19,547 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:12:19,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:12:19,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:12:19,548 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_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ce03462fe975a31ea60daf5f1377957a781bf3e81bf898be84185f681a4ed0e [2022-10-17 10:12:19,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:12:19,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:12:19,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:12:19,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:12:19,867 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:12:19,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2022-10-17 10:12:19,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/data/95f793932/a8e22b8b7beb48bd9fe14d4d5b1e1663/FLAGa934f90e1 [2022-10-17 10:12:20,424 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:12:20,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i [2022-10-17 10:12:20,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/data/95f793932/a8e22b8b7beb48bd9fe14d4d5b1e1663/FLAGa934f90e1 [2022-10-17 10:12:20,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/data/95f793932/a8e22b8b7beb48bd9fe14d4d5b1e1663 [2022-10-17 10:12:20,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:12:20,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:12:20,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:20,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:12:20,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:12:20,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:20" (1/1) ... [2022-10-17 10:12:20,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e3881e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:20, skipping insertion in model container [2022-10-17 10:12:20,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:20" (1/1) ... [2022-10-17 10:12:20,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:12:20,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:12:21,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2022-10-17 10:12:21,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:21,084 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:12:21,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/sv-benchmarks/c/loop-crafted/simple_array_index_value_3.i[920,933] [2022-10-17 10:12:21,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:21,143 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:12:21,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21 WrapperNode [2022-10-17 10:12:21,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:21,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:21,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:12:21,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:12:21,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,184 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-10-17 10:12:21,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:21,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:12:21,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:12:21,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:12:21,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:12:21,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:12:21,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:12:21,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:12:21,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (1/1) ... [2022-10-17 10:12:21,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:21,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:12:21,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:12:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:12:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:12:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:12:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:12:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:12:21,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:12:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:12:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:12:21,405 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:12:21,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:12:21,550 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:12:21,557 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:12:21,557 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:12:21,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:21 BoogieIcfgContainer [2022-10-17 10:12:21,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:12:21,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:12:21,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:12:21,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:12:21,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:12:20" (1/3) ... [2022-10-17 10:12:21,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:21, skipping insertion in model container [2022-10-17 10:12:21,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:21" (2/3) ... [2022-10-17 10:12:21,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:21, skipping insertion in model container [2022-10-17 10:12:21,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:21" (3/3) ... [2022-10-17 10:12:21,571 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.i [2022-10-17 10:12:21,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:12:21,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:12:21,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:12:21,661 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;@28af6cd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:12:21,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:12:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) [2022-10-17 10:12:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:12:21,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:21,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:21,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1156778892, now seen corresponding path program 1 times [2022-10-17 10:12:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:21,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026951918] [2022-10-17 10:12:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026951918] [2022-10-17 10:12:22,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026951918] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:22,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:22,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:12:22,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757836443] [2022-10-17 10:12:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:22,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:12:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:12:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:12:22,180 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:12:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:22,322 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-10-17 10:12:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:12:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2022-10-17 10:12:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:22,338 INFO L225 Difference]: With dead ends: 40 [2022-10-17 10:12:22,338 INFO L226 Difference]: Without dead ends: 19 [2022-10-17 10:12:22,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:12:22,346 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:22,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:12:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-17 10:12:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2022-10-17 10:12:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-10-17 10:12:22,384 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2022-10-17 10:12:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:22,384 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-10-17 10:12:22,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:12:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-10-17 10:12:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:12:22,386 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:22,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:12:22,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:22,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1156719310, now seen corresponding path program 1 times [2022-10-17 10:12:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942645350] [2022-10-17 10:12:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:22,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942645350] [2022-10-17 10:12:22,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942645350] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:22,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:22,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:12:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037530747] [2022-10-17 10:12:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:22,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:12:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:12:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:12:22,542 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. 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) [2022-10-17 10:12:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:22,595 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-10-17 10:12:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:12:22,605 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 [2022-10-17 10:12:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:22,606 INFO L225 Difference]: With dead ends: 36 [2022-10-17 10:12:22,606 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 10:12:22,607 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 [2022-10-17 10:12:22,609 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:22,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:12:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 10:12:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2022-10-17 10:12:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-10-17 10:12:22,616 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-10-17 10:12:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:22,617 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-10-17 10:12:22,617 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) [2022-10-17 10:12:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-10-17 10:12:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:12:22,618 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:22,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:12:22,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash 723292333, now seen corresponding path program 1 times [2022-10-17 10:12:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:22,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638755258] [2022-10-17 10:12:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:22,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:22,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638755258] [2022-10-17 10:12:22,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638755258] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:12:22,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806685775] [2022-10-17 10:12:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:22,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:22,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:22,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:12:22,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:12:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:12:22,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:23,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:12:23,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-10-17 10:12:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:23,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:12:23,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-17 10:12:23,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-10-17 10:12:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:23,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806685775] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:12:23,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:12:23,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2022-10-17 10:12:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755321529] [2022-10-17 10:12:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:12:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:12:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:12:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:12:23,338 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-10-17 10:12:23,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:23,627 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-10-17 10:12:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:12:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 10 [2022-10-17 10:12:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:23,631 INFO L225 Difference]: With dead ends: 50 [2022-10-17 10:12:23,631 INFO L226 Difference]: Without dead ends: 39 [2022-10-17 10:12:23,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:12:23,638 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:23,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 57 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:12:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-17 10:12:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 16. [2022-10-17 10:12:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2022-10-17 10:12:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-10-17 10:12:23,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-10-17 10:12:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:23,655 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-10-17 10:12:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-10-17 10:12:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-10-17 10:12:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:12:23,658 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:23,658 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:23,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 10:12:23,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1125888878, now seen corresponding path program 2 times [2022-10-17 10:12:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785889259] [2022-10-17 10:12:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:24,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785889259] [2022-10-17 10:12:24,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785889259] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:12:24,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127852336] [2022-10-17 10:12:24,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:12:24,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:24,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:24,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:12:24,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:12:24,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:12:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:12:24,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 10:12:24,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:24,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-10-17 10:12:24,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:12:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:24,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:12:24,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-10-17 10:12:24,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-10-17 10:12:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:24,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127852336] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:12:24,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:12:24,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-10-17 10:12:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770463708] [2022-10-17 10:12:24,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:12:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:12:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:12:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:12:24,699 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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) [2022-10-17 10:12:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:25,017 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-10-17 10:12:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:12:25,020 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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 11 [2022-10-17 10:12:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:25,021 INFO L225 Difference]: With dead ends: 62 [2022-10-17 10:12:25,022 INFO L226 Difference]: Without dead ends: 51 [2022-10-17 10:12:25,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:12:25,023 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:25,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 99 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-10-17 10:12:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-17 10:12:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 17. [2022-10-17 10:12:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-17 10:12:25,032 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-10-17 10:12:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:25,033 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-17 10:12:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 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) [2022-10-17 10:12:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-10-17 10:12:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:12:25,035 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:25,036 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:25,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:25,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1679035725, now seen corresponding path program 3 times [2022-10-17 10:12:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:25,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532754811] [2022-10-17 10:12:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:25,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532754811] [2022-10-17 10:12:25,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532754811] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:12:25,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545305580] [2022-10-17 10:12:25,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:12:25,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:25,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:12:25,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:12:25,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 10:12:25,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:12:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:12:25,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:25,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:12:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545305580] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:12:25,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:12:25,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-17 10:12:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032911320] [2022-10-17 10:12:25,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:12:25,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:12:25,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:12:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:12:25,654 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:26,015 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2022-10-17 10:12:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:12:26,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 10:12:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:26,018 INFO L225 Difference]: With dead ends: 104 [2022-10-17 10:12:26,018 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 10:12:26,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:12:26,019 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 176 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:26,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 128 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:12:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 10:12:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 22. [2022-10-17 10:12:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-10-17 10:12:26,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2022-10-17 10:12:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:26,037 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-10-17 10:12:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-10-17 10:12:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:12:26,039 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:26,039 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:26,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:26,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:26,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1586072242, now seen corresponding path program 4 times [2022-10-17 10:12:26,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:26,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16350233] [2022-10-17 10:12:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:26,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:26,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16350233] [2022-10-17 10:12:26,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16350233] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:12:26,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249161423] [2022-10-17 10:12:26,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:12:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:26,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:12:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:12:26,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:12:26,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:12:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:12:26,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:12:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:26,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:12:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:27,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249161423] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:12:27,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:12:27,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-10-17 10:12:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915841591] [2022-10-17 10:12:27,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:12:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 10:12:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 10:12:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:12:27,037 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2022-10-17 10:12:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:30,039 INFO L93 Difference]: Finished difference Result 214 states and 244 transitions. [2022-10-17 10:12:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:12:30,040 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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 17 [2022-10-17 10:12:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:30,043 INFO L225 Difference]: With dead ends: 214 [2022-10-17 10:12:30,043 INFO L226 Difference]: Without dead ends: 203 [2022-10-17 10:12:30,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=506, Unknown=0, NotChecked=0, Total=812 [2022-10-17 10:12:30,045 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 616 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:30,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 554 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 10:12:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-17 10:12:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 32. [2022-10-17 10:12:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:12:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-10-17 10:12:30,072 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17 [2022-10-17 10:12:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:30,073 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-10-17 10:12:30,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2022-10-17 10:12:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-10-17 10:12:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:12:30,075 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:30,075 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:12:30,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:12:30,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:12:30,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 889939858, now seen corresponding path program 5 times [2022-10-17 10:12:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:30,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71998925] [2022-10-17 10:12:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:12:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71998925] [2022-10-17 10:12:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71998925] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:12:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393618887] [2022-10-17 10:12:31,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:12:31,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:12:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:31,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:12:31,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85f859a1-b47a-4984-88eb-90c087dfb909/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:13:03,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-10-17 10:13:03,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:13:03,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 107 conjunts are in the unsatisfiable core [2022-10-17 10:13:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:03,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:13:03,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:13:03,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:13:03,563 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-17 10:13:03,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-17 10:13:03,623 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-17 10:13:03,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-17 10:13:03,682 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-17 10:13:03,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-17 10:13:03,770 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-10-17 10:13:03,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26