./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0 --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 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:46:33,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:46:33,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:46:33,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:46:33,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:46:33,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:46:33,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:46:33,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:46:33,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:46:33,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:46:33,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:46:33,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:46:33,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:46:33,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:46:33,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:46:33,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:46:33,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:46:33,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:46:33,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:46:33,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:46:33,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:46:33,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:46:33,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:46:33,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:46:33,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:46:33,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:46:33,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:46:33,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:46:33,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:46:33,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:46:33,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:46:33,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:46:33,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:46:33,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:46:33,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:46:33,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:46:33,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:46:33,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:46:33,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:46:33,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:46:33,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:46:33,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:46:33,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:46:33,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:46:33,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:46:33,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:46:33,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:46:33,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:46:33,360 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:46:33,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:46:33,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:46:33,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:46:33,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:46:33,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:46:33,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:46:33,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:46:33,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:46:33,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:46:33,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:46:33,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:46:33,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:46:33,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:46:33,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:46:33,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:46:33,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:46:33,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:46:33,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:46:33,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:46:33,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:46:33,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:46:33,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:46:33,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:46:33,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:46:33,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:46:33,366 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_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 [2021-11-22 14:46:33,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:46:33,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:46:33,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:46:33,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:46:33,697 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:46:33,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2021-11-22 14:46:33,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/data/aee735655/ef683777094b431aa2c6faacc96004d9/FLAGa5f673382 [2021-11-22 14:46:34,434 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:46:34,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2021-11-22 14:46:34,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/data/aee735655/ef683777094b431aa2c6faacc96004d9/FLAGa5f673382 [2021-11-22 14:46:34,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/data/aee735655/ef683777094b431aa2c6faacc96004d9 [2021-11-22 14:46:34,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:46:34,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:46:34,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:46:34,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:46:34,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:46:34,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:46:34" (1/1) ... [2021-11-22 14:46:34,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767c1d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:34, skipping insertion in model container [2021-11-22 14:46:34,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:46:34" (1/1) ... [2021-11-22 14:46:34,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:46:34,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:46:35,090 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_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2021-11-22 14:46:35,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:46:35,119 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:46:35,136 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_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2021-11-22 14:46:35,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:46:35,179 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:46:35,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35 WrapperNode [2021-11-22 14:46:35,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:46:35,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:46:35,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:46:35,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:46:35,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,239 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2021-11-22 14:46:35,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:46:35,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:46:35,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:46:35,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:46:35,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:46:35,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:46:35,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:46:35,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:46:35,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (1/1) ... [2021-11-22 14:46:35,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:46:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:35,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:46:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:46:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:46:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:46:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:46:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:46:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:46:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:46:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:46:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:46:35,480 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:46:35,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:46:35,715 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:46:35,722 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:46:35,722 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 14:46:35,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:46:35 BoogieIcfgContainer [2021-11-22 14:46:35,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:46:35,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:46:35,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:46:35,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:46:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:46:34" (1/3) ... [2021-11-22 14:46:35,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4907aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:46:35, skipping insertion in model container [2021-11-22 14:46:35,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:35" (2/3) ... [2021-11-22 14:46:35,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4907aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:46:35, skipping insertion in model container [2021-11-22 14:46:35,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:46:35" (3/3) ... [2021-11-22 14:46:35,764 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2021-11-22 14:46:35,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:46:35,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 14:46:35,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:46:35,855 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:46:35,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 14:46:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.565217391304348) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 14:46:35,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:35,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:35,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:35,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2006137184, now seen corresponding path program 1 times [2021-11-22 14:46:35,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:35,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388184321] [2021-11-22 14:46:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:35,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:46:36,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:36,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388184321] [2021-11-22 14:46:36,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388184321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:46:36,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:46:36,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:46:36,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451502462] [2021-11-22 14:46:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:46:36,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:46:36,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:46:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:46:36,129 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.565217391304348) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-22 14:46:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:36,175 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2021-11-22 14:46:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:46:36,178 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 [2021-11-22 14:46:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:36,187 INFO L225 Difference]: With dead ends: 53 [2021-11-22 14:46:36,188 INFO L226 Difference]: Without dead ends: 27 [2021-11-22 14:46:36,191 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:46:36,195 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:46:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-22 14:46:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-22 14:46:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-22 14:46:36,235 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2021-11-22 14:46:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:36,236 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-22 14:46:36,236 INFO L471 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) [2021-11-22 14:46:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-22 14:46:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 14:46:36,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:36,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:36,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:46:36,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash -324137903, now seen corresponding path program 1 times [2021-11-22 14:46:36,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497738721] [2021-11-22 14:46:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:36,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:46:36,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497738721] [2021-11-22 14:46:36,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497738721] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:36,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513081418] [2021-11-22 14:46:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:36,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:36,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:36,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:36,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:46:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:36,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:46:36,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:46:36,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:46:36,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513081418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:46:36,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:46:36,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 14:46:36,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060704683] [2021-11-22 14:46:36,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:46:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:46:36,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:46:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:46:36,575 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:36,648 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2021-11-22 14:46:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:46:36,649 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 [2021-11-22 14:46:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:36,650 INFO L225 Difference]: With dead ends: 58 [2021-11-22 14:46:36,650 INFO L226 Difference]: Without dead ends: 39 [2021-11-22 14:46:36,651 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:46:36,654 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:36,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:46:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-22 14:46:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-22 14:46:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-11-22 14:46:36,664 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 14 [2021-11-22 14:46:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:36,665 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-11-22 14:46:36,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-11-22 14:46:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 14:46:36,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:36,667 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:36,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:36,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:36,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash 668967821, now seen corresponding path program 2 times [2021-11-22 14:46:36,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:36,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3671068] [2021-11-22 14:46:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:36,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-22 14:46:37,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:37,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3671068] [2021-11-22 14:46:37,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3671068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:37,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127237156] [2021-11-22 14:46:37,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:46:37,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:37,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:37,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:37,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:46:37,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:46:37,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:46:37,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:46:37,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-22 14:46:37,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-22 14:46:37,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127237156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:46:37,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:46:37,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-22 14:46:37,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639978608] [2021-11-22 14:46:37,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:46:37,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 14:46:37,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 14:46:37,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-22 14:46:37,523 INFO L87 Difference]: Start difference. First operand 39 states and 46 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) [2021-11-22 14:46:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:37,695 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-11-22 14:46:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 14:46:37,699 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 [2021-11-22 14:46:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:37,701 INFO L225 Difference]: With dead ends: 97 [2021-11-22 14:46:37,701 INFO L226 Difference]: Without dead ends: 69 [2021-11-22 14:46:37,702 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:46:37,703 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 84 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:37,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 61 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:46:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-22 14:46:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-22 14:46:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 68 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2021-11-22 14:46:37,720 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 29 [2021-11-22 14:46:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:37,720 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-11-22 14:46:37,720 INFO L471 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) [2021-11-22 14:46:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2021-11-22 14:46:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 14:46:37,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:37,723 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:37,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:37,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:37,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1077163713, now seen corresponding path program 3 times [2021-11-22 14:46:37,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:37,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651178813] [2021-11-22 14:46:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:37,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-22 14:46:38,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:38,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651178813] [2021-11-22 14:46:38,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651178813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:38,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721608404] [2021-11-22 14:46:38,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:46:38,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:38,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:38,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:38,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:46:41,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-22 14:46:41,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:46:41,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 14:46:41,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-22 14:46:41,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-22 14:46:42,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721608404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:46:42,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:46:42,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-22 14:46:42,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360148446] [2021-11-22 14:46:42,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:46:42,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-22 14:46:42,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 14:46:42,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-22 14:46:42,102 INFO L87 Difference]: Start difference. First operand 69 states and 82 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) [2021-11-22 14:46:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:42,444 INFO L93 Difference]: Finished difference Result 175 states and 236 transitions. [2021-11-22 14:46:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 14:46:42,445 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 [2021-11-22 14:46:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:42,448 INFO L225 Difference]: With dead ends: 175 [2021-11-22 14:46:42,448 INFO L226 Difference]: Without dead ends: 129 [2021-11-22 14:46:42,449 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:46:42,451 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 213 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:42,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 88 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:46:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-22 14:46:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-22 14:46:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 128 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2021-11-22 14:46:42,470 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 59 [2021-11-22 14:46:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:42,471 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2021-11-22 14:46:42,471 INFO L471 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) [2021-11-22 14:46:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2021-11-22 14:46:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-22 14:46:42,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:42,477 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:42,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:42,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:42,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash 962315561, now seen corresponding path program 4 times [2021-11-22 14:46:42,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:42,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965855128] [2021-11-22 14:46:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:42,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-22 14:46:43,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965855128] [2021-11-22 14:46:43,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965855128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529273020] [2021-11-22 14:46:43,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:46:43,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:43,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:43,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:43,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:46:43,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:46:43,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:46:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 14:46:43,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-22 14:46:43,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-22 14:46:45,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529273020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:46:45,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:46:45,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-22 14:46:45,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609772486] [2021-11-22 14:46:45,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:46:45,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-22 14:46:45,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-22 14:46:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-22 14:46:45,050 INFO L87 Difference]: Start difference. First operand 129 states and 154 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) [2021-11-22 14:46:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:45,723 INFO L93 Difference]: Finished difference Result 331 states and 452 transitions. [2021-11-22 14:46:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 14:46:45,723 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 [2021-11-22 14:46:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:45,726 INFO L225 Difference]: With dead ends: 331 [2021-11-22 14:46:45,726 INFO L226 Difference]: Without dead ends: 249 [2021-11-22 14:46:45,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-22 14:46:45,729 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 556 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:45,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 112 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:46:45,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-22 14:46:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-22 14:46:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.2064777327935223) internal successors, (298), 248 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-22 14:46:45,755 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 119 [2021-11-22 14:46:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:45,755 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-22 14:46:45,756 INFO L471 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) [2021-11-22 14:46:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-22 14:46:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-22 14:46:45,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:45,761 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:45,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:45,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:45,980 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1753711097, now seen corresponding path program 5 times [2021-11-22 14:46:45,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:45,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073648530] [2021-11-22 14:46:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:45,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2021-11-22 14:46:47,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:47,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073648530] [2021-11-22 14:46:47,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073648530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:47,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774982207] [2021-11-22 14:46:47,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:46:47,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:47,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:47,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:47,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4489ea7-f5e2-4408-ba7a-904fae1bdf35/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process