./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc --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 b855c2333aba0768da7f98c0f43af3ba5efb2578eeec0e9146f1a7f4f307c07a --- 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-5e519f3 [2022-11-02 20:59:53,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:53,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:53,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:53,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:53,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:53,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:53,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:53,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:53,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:53,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:53,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:53,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:53,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:53,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:53,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:53,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:53,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:53,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:53,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:53,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:53,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:53,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:53,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:53,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:53,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:53,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:53,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:53,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:53,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:53,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:53,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:53,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:53,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:53,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:53,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:53,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:53,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:53,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:53,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:53,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:53,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:59:53,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:53,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:53,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:53,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:53,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:53,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:53,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:53,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:53,353 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:53,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:53,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:53,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:53,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:53,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:53,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:53,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:53,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:53,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:53,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:53,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:53,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:53,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:53,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:53,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:53,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:53,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:53,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:53,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:53,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:53,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:53,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:53,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:53,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:53,360 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_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b855c2333aba0768da7f98c0f43af3ba5efb2578eeec0e9146f1a7f4f307c07a [2022-11-02 20:59:53,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:53,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:53,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:53,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:53,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:53,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i [2022-11-02 20:59:53,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/data/83c50eea9/90a8dac9ce2642faa1c8909b2b9934bb/FLAG3f582ca30 [2022-11-02 20:59:54,394 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:54,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i [2022-11-02 20:59:54,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/data/83c50eea9/90a8dac9ce2642faa1c8909b2b9934bb/FLAG3f582ca30 [2022-11-02 20:59:54,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/data/83c50eea9/90a8dac9ce2642faa1c8909b2b9934bb [2022-11-02 20:59:54,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:54,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:54,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:54,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:54,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:54,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d141103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:54, skipping insertion in model container [2022-11-02 20:59:54,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:54" (1/1) ... [2022-11-02 20:59:54,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:54,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:54,987 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_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i[959,972] [2022-11-02 20:59:55,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:55,011 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:55,021 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_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_flag_init.i[959,972] [2022-11-02 20:59:55,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:55,041 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:55,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55 WrapperNode [2022-11-02 20:59:55,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:55,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:55,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:55,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:55,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,084 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-11-02 20:59:55,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:55,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:55,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:55,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:55,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:55,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:55,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:55,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:55,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:55,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:59:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:59:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:59:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:55,343 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:55,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:55,567 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:55,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:55,572 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:59:55,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:55 BoogieIcfgContainer [2022-11-02 20:59:55,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:55,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:55,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:55,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:55,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:54" (1/3) ... [2022-11-02 20:59:55,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c21db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:55, skipping insertion in model container [2022-11-02 20:59:55,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55" (2/3) ... [2022-11-02 20:59:55,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c21db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:55, skipping insertion in model container [2022-11-02 20:59:55,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:55" (3/3) ... [2022-11-02 20:59:55,583 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2022-11-02 20:59:55,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:55,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:55,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:55,654 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;@7b17861f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:55,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) [2022-11-02 20:59:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:59:55,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:55,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:55,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2022-11-02 20:59:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:55,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345059515] [2022-11-02 20:59:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345059515] [2022-11-02 20:59:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345059515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:56,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296842436] [2022-11-02 20:59:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:56,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:56,171 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:56,218 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2022-11-02 20:59:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:59:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:56,232 INFO L225 Difference]: With dead ends: 38 [2022-11-02 20:59:56,233 INFO L226 Difference]: Without dead ends: 18 [2022-11-02 20:59:56,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:56,249 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:56,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-02 20:59:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-02 20:59:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-02 20:59:56,303 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-11-02 20:59:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:56,304 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-02 20:59:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-02 20:59:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:59:56,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:56,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:56,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1264138591, now seen corresponding path program 1 times [2022-11-02 20:59:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817988743] [2022-11-02 20:59:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:56,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:56,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817988743] [2022-11-02 20:59:56,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817988743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:56,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:59:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796336201] [2022-11-02 20:59:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:56,464 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:56,503 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-11-02 20:59:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:59:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:56,505 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:59:56,507 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:59:56,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:56,509 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:56,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:59:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-11-02 20:59:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-02 20:59:56,521 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2022-11-02 20:59:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:56,522 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-02 20:59:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-02 20:59:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:56,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:56,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:56,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:56,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1458340319, now seen corresponding path program 1 times [2022-11-02 20:59:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354664901] [2022-11-02 20:59:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354664901] [2022-11-02 20:59:56,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354664901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071787685] [2022-11-02 20:59:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:56,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:56,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:56,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:56,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:56,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:56,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:56,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071787685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:56,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:59:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156896318] [2022-11-02 20:59:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:56,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:56,798 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:56,815 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-11-02 20:59:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:56,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-02 20:59:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:56,837 INFO L225 Difference]: With dead ends: 32 [2022-11-02 20:59:56,852 INFO L226 Difference]: Without dead ends: 18 [2022-11-02 20:59:56,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:56,858 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:56,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-02 20:59:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-02 20:59:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-02 20:59:56,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2022-11-02 20:59:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:56,871 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-02 20:59:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-02 20:59:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:59:56,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:56,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:56,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:59:57,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:57,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2027280351, now seen corresponding path program 1 times [2022-11-02 20:59:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:57,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658958768] [2022-11-02 20:59:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658958768] [2022-11-02 20:59:57,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658958768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330546157] [2022-11-02 20:59:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:57,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:57,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:57,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:57,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:59:57,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:57,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:59:57,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330546157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:57,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:57,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-02 20:59:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639335327] [2022-11-02 20:59:57,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:57,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:57,408 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:57,494 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2022-11-02 20:59:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:59:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:57,497 INFO L225 Difference]: With dead ends: 56 [2022-11-02 20:59:57,497 INFO L226 Difference]: Without dead ends: 43 [2022-11-02 20:59:57,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:57,499 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:57,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-02 20:59:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-11-02 20:59:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-11-02 20:59:57,508 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2022-11-02 20:59:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:57,508 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-11-02 20:59:57,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-11-02 20:59:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:59:57,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:57,510 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:57,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:57,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2044266853, now seen corresponding path program 2 times [2022-11-02 20:59:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:57,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130153413] [2022-11-02 20:59:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:59:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:57,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130153413] [2022-11-02 20:59:57,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130153413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034145048] [2022-11-02 20:59:57,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:57,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:57,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:57,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:58,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:58,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:59:58,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:59:58,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034145048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:58,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:58,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 20:59:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538400091] [2022-11-02 20:59:58,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:59:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:59:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:59:58,318 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:58,375 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2022-11-02 20:59:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:59:58,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2022-11-02 20:59:58,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:58,377 INFO L225 Difference]: With dead ends: 55 [2022-11-02 20:59:58,377 INFO L226 Difference]: Without dead ends: 39 [2022-11-02 20:59:58,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:59:58,378 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:58,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-02 20:59:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-02 20:59:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-02 20:59:58,385 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2022-11-02 20:59:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:58,386 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-02 20:59:58,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-02 20:59:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:59:58,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:58,387 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:58,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:58,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:58,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2120045553, now seen corresponding path program 3 times [2022-11-02 20:59:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:58,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952575630] [2022-11-02 20:59:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:58,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:59:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952575630] [2022-11-02 20:59:59,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952575630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907136682] [2022-11-02 20:59:59,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:59,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:59,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:59:59,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:59:59,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:59,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 20:59:59,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 20:59:59,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907136682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:59,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:59,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-11-02 20:59:59,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066205419] [2022-11-02 20:59:59,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:59,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:59:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:59:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:59:59,289 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:59,441 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2022-11-02 20:59:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:59:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:59:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:59,447 INFO L225 Difference]: With dead ends: 106 [2022-11-02 20:59:59,447 INFO L226 Difference]: Without dead ends: 90 [2022-11-02 20:59:59,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:59:59,450 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 85 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 100 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-02 20:59:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2022-11-02 20:59:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-11-02 20:59:59,461 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2022-11-02 20:59:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-11-02 20:59:59,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-11-02 20:59:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:59:59,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:59,463 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:59,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:59,685 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1925935603, now seen corresponding path program 4 times [2022-11-02 20:59:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:59,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951984168] [2022-11-02 20:59:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 21:00:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951984168] [2022-11-02 21:00:00,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951984168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788731791] [2022-11-02 21:00:00,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:00:00,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:00,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:00,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:00,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:00:01,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:00:01,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:01,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:00:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-02 21:00:01,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-02 21:00:01,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788731791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:01,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:01,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2022-11-02 21:00:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554700379] [2022-11-02 21:00:01,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:00:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:00:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:00:01,644 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:01,887 INFO L93 Difference]: Finished difference Result 200 states and 227 transitions. [2022-11-02 21:00:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 21:00:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 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 50 [2022-11-02 21:00:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:01,889 INFO L225 Difference]: With dead ends: 200 [2022-11-02 21:00:01,889 INFO L226 Difference]: Without dead ends: 172 [2022-11-02 21:00:01,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:00:01,891 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:01,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 130 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:00:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-02 21:00:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 79. [2022-11-02 21:00:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 78 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) [2022-11-02 21:00:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-11-02 21:00:01,901 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 50 [2022-11-02 21:00:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:01,901 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-11-02 21:00:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-11-02 21:00:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:00:01,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:01,903 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:01,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:02,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:02,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2083201141, now seen corresponding path program 5 times [2022-11-02 21:00:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:02,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119822904] [2022-11-02 21:00:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-02 21:00:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119822904] [2022-11-02 21:00:02,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119822904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174893208] [2022-11-02 21:00:02,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:00:02,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:02,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:02,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:00:03,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-02 21:00:03,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:03,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:00:03,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-02 21:00:03,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-02 21:00:04,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174893208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:04,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:04,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2022-11-02 21:00:04,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119960037] [2022-11-02 21:00:04,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:04,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 21:00:04,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 21:00:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 21:00:04,423 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 45 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 45 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:04,875 INFO L93 Difference]: Finished difference Result 386 states and 437 transitions. [2022-11-02 21:00:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 21:00:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 45 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-02 21:00:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:04,878 INFO L225 Difference]: With dead ends: 386 [2022-11-02 21:00:04,879 INFO L226 Difference]: Without dead ends: 334 [2022-11-02 21:00:04,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 21:00:04,881 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 570 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:04,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 236 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-02 21:00:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 129. [2022-11-02 21:00:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2022-11-02 21:00:04,914 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 76 [2022-11-02 21:00:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:04,915 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2022-11-02 21:00:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 45 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2022-11-02 21:00:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 21:00:04,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:04,920 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:04,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 21:00:05,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1615061623, now seen corresponding path program 6 times [2022-11-02 21:00:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:05,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975204211] [2022-11-02 21:00:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2022-11-02 21:00:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:05,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975204211] [2022-11-02 21:00:05,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975204211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:05,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768033196] [2022-11-02 21:00:05,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:00:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:05,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:05,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:00:06,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 21:00:06,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:06,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:00:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-02 21:00:06,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:07,431 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-02 21:00:07,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2022-11-02 21:00:07,443 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-02 21:00:07,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-02 21:00:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1504 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-02 21:00:07,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768033196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:07,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:07,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 7] total 26 [2022-11-02 21:00:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632689361] [2022-11-02 21:00:07,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:00:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:00:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:00:07,473 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:07,925 INFO L93 Difference]: Finished difference Result 241 states and 250 transitions. [2022-11-02 21:00:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:00:07,926 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 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 126 [2022-11-02 21:00:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:07,927 INFO L225 Difference]: With dead ends: 241 [2022-11-02 21:00:07,927 INFO L226 Difference]: Without dead ends: 141 [2022-11-02 21:00:07,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=419, Invalid=1387, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 21:00:07,929 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:07,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 106 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-02 21:00:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 134. [2022-11-02 21:00:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2022-11-02 21:00:07,940 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 126 [2022-11-02 21:00:07,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:07,940 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2022-11-02 21:00:07,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2022-11-02 21:00:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-02 21:00:07,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:07,942 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:08,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:08,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:08,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1690999614, now seen corresponding path program 1 times [2022-11-02 21:00:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:08,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454882678] [2022-11-02 21:00:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2022-11-02 21:00:08,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:08,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454882678] [2022-11-02 21:00:08,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454882678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:08,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:08,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785274421] [2022-11-02 21:00:08,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:08,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:08,285 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-02 21:00:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:08,293 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2022-11-02 21:00:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-11-02 21:00:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:08,297 INFO L225 Difference]: With dead ends: 141 [2022-11-02 21:00:08,297 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 21:00:08,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:08,298 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:08,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 21:00:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-02 21:00:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2022-11-02 21:00:08,311 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 131 [2022-11-02 21:00:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:08,312 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2022-11-02 21:00:08,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-02 21:00:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2022-11-02 21:00:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-02 21:00:08,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:08,315 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:08,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1468975112, now seen corresponding path program 1 times [2022-11-02 21:00:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:08,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8673810] [2022-11-02 21:00:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:09,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8673810] [2022-11-02 21:00:09,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8673810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773906478] [2022-11-02 21:00:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:09,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:09,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:09,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:00:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:00:09,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:09,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:10,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773906478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:10,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:10,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-11-02 21:00:10,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333126162] [2022-11-02 21:00:10,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 21:00:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 21:00:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=976, Invalid=1186, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 21:00:10,449 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:10,586 INFO L93 Difference]: Finished difference Result 269 states and 288 transitions. [2022-11-02 21:00:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:00:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 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 133 [2022-11-02 21:00:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:10,588 INFO L225 Difference]: With dead ends: 269 [2022-11-02 21:00:10,588 INFO L226 Difference]: Without dead ends: 166 [2022-11-02 21:00:10,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=976, Invalid=1186, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 21:00:10,590 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 45 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:10,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 58 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-02 21:00:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-02 21:00:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2022-11-02 21:00:10,617 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 133 [2022-11-02 21:00:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:10,617 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2022-11-02 21:00:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2022-11-02 21:00:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:00:10,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:10,620 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:10,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:10,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:10,841 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1733851160, now seen corresponding path program 2 times [2022-11-02 21:00:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:10,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255015249] [2022-11-02 21:00:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2238 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255015249] [2022-11-02 21:00:12,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255015249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010577656] [2022-11-02 21:00:12,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:00:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:12,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:12,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:00:13,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:00:13,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 21:00:13,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2238 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:14,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2238 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:17,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010577656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:17,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:17,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 95 [2022-11-02 21:00:17,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294249826] [2022-11-02 21:00:17,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:17,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-02 21:00:17,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-02 21:00:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4000, Invalid=4930, Unknown=0, NotChecked=0, Total=8930 [2022-11-02 21:00:17,412 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 95 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 95 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:17,729 INFO L93 Difference]: Finished difference Result 333 states and 368 transitions. [2022-11-02 21:00:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-02 21:00:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 95 states have internal predecessors, (200), 0 states have call successors, (0), 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 165 [2022-11-02 21:00:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:17,731 INFO L225 Difference]: With dead ends: 333 [2022-11-02 21:00:17,731 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:17,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4000, Invalid=4930, Unknown=0, NotChecked=0, Total=8930 [2022-11-02 21:00:17,735 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 124 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:17,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 72 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:00:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-02 21:00:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.0131004366812226) internal successors, (232), 229 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2022-11-02 21:00:17,750 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 165 [2022-11-02 21:00:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2022-11-02 21:00:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 95 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2022-11-02 21:00:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-02 21:00:17,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:17,754 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:17,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:00:17,974 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -286095448, now seen corresponding path program 3 times [2022-11-02 21:00:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:17,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519598588] [2022-11-02 21:00:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-02 21:00:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519598588] [2022-11-02 21:00:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519598588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854164030] [2022-11-02 21:00:23,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:00:23,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:23,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:23,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:00:24,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 21:00:24,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:00:24,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:00:24,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:24,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 21:00:25,745 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:25,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-11-02 21:00:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 4971 trivial. 0 not checked. [2022-11-02 21:00:25,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:27,213 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 50 treesize of output 42 [2022-11-02 21:00:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 4971 trivial. 0 not checked. [2022-11-02 21:00:28,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854164030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:00:28,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:00:28,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 9, 9] total 77 [2022-11-02 21:00:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029375762] [2022-11-02 21:00:28,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:00:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-11-02 21:00:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-11-02 21:00:28,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=3605, Unknown=0, NotChecked=0, Total=5852 [2022-11-02 21:00:28,195 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand has 77 states, 77 states have (on average 2.155844155844156) internal successors, (166), 77 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:37,483 INFO L93 Difference]: Finished difference Result 324 states and 328 transitions. [2022-11-02 21:00:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-02 21:00:37,483 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.155844155844156) internal successors, (166), 77 states have internal predecessors, (166), 0 states have call successors, (0), 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 229 [2022-11-02 21:00:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:37,484 INFO L225 Difference]: With dead ends: 324 [2022-11-02 21:00:37,484 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:00:37,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 444 SyntacticMatches, 4 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11569 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=13241, Invalid=29401, Unknown=0, NotChecked=0, Total=42642 [2022-11-02 21:00:37,494 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-02 21:00:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:00:37,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:00:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:00:37,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2022-11-02 21:00:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:37,496 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:00:37,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.155844155844156) internal successors, (166), 77 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:00:37,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:00:37,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:00:37,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 21:00:37,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 21:00:39,101 INFO L899 garLoopResultBuilder]: For program point L35-2(lines 35 41) no Hoare annotation was computed. [2022-11-02 21:00:39,102 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 41) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0#1.base|))) (let ((.cse1 (forall ((|ULTIMATE.start_main_~i~1#1| Int)) (or (not (= (select .cse0 (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |ULTIMATE.start_main_~i~1#1| 4))) 0)) (not (< |ULTIMATE.start_main_~i~1#1| 100000)) (<= |ULTIMATE.start_main_~i~1#1| 99998)))) (.cse2 (= |ULTIMATE.start_main_~flag~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~#a~0#1.offset| 0))) (or (and (<= |ULTIMATE.start_main_~i~1#1| 99999) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|) 0) (= (select .cse0 |ULTIMATE.start_main_~#a~0#1.offset|) 0) .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~i~1#1| 0) .cse1 .cse2 .cse3) (<= 1 |ULTIMATE.start_main_~flag~0#1|)))) [2022-11-02 21:00:39,102 INFO L899 garLoopResultBuilder]: For program point L35-4(lines 35 41) no Hoare annotation was computed. [2022-11-02 21:00:39,102 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2022-11-02 21:00:39,102 INFO L895 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#a~0#1.offset| |ULTIMATE.start_init_~a#1.offset|)) (.cse1 (= |ULTIMATE.start_init_~size#1| 100000)) (.cse2 (= |ULTIMATE.start_main_~flag~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse4 (= |ULTIMATE.start_init_~a#1.base| |ULTIMATE.start_main_~#a~0#1.base|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_init_~i~0#1| 0) .cse2 .cse3 .cse4) (and .cse0 .cse1 (exists ((|v_ULTIMATE.start_init_~i~0#1_110| Int)) (and (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_init_~i~0#1_110| 4))) 0)) (< |v_ULTIMATE.start_init_~i~0#1_110| |ULTIMATE.start_init_~size#1|) (<= |ULTIMATE.start_init_~i~0#1| (+ |v_ULTIMATE.start_init_~i~0#1_110| 1)))) .cse2 .cse3 .cse4))) [2022-11-02 21:00:39,102 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-02 21:00:39,102 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 27) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 46) no Hoare annotation was computed. [2022-11-02 21:00:39,103 INFO L895 garLoopResultBuilder]: At program point L42-3(lines 42 46) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~flag~0#1|) [2022-11-02 21:00:39,104 INFO L899 garLoopResultBuilder]: For program point L42-4(lines 42 46) no Hoare annotation was computed. [2022-11-02 21:00:39,104 INFO L902 garLoopResultBuilder]: At program point L47(lines 28 48) the Hoare annotation is: true [2022-11-02 21:00:39,107 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1, 1] [2022-11-02 21:00:39,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:00:39,122 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,123 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,123 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,123 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,126 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,129 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-02 21:00:39,129 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,130 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,131 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,131 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,136 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-02 21:00:39,137 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,137 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,137 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,138 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,138 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,138 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,138 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,138 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,139 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:00:39 BoogieIcfgContainer [2022-11-02 21:00:39,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:00:39,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:00:39,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:00:39,141 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:00:39,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:55" (3/4) ... [2022-11-02 21:00:39,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:00:39,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-02 21:00:39,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-02 21:00:39,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:00:39,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:00:39,175 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((a == a && size == 100000) && i == 0) && flag == 0) && a == 0) && a == a) || (((((a == a && size == 100000) && (\exists v_ULTIMATE.start_init_~i~0#1_110 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0#1_110 * 4] == 0) && v_ULTIMATE.start_init_~i~0#1_110 < size) && i <= v_ULTIMATE.start_init_~i~0#1_110 + 1)) && flag == 0) && a == 0) && a == a) [2022-11-02 21:00:39,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:00:39,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:00:39,185 INFO L158 Benchmark]: Toolchain (without parser) took 44416.61ms. Allocated memory was 94.4MB in the beginning and 478.2MB in the end (delta: 383.8MB). Free memory was 60.0MB in the beginning and 331.1MB in the end (delta: -271.1MB). Peak memory consumption was 111.8MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,186 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:39,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.15ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 68.6MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,187 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.65ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,187 INFO L158 Benchmark]: Boogie Preprocessor took 54.98ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 65.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:39,187 INFO L158 Benchmark]: RCFGBuilder took 433.48ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 54.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,188 INFO L158 Benchmark]: TraceAbstraction took 43563.56ms. Allocated memory was 94.4MB in the beginning and 478.2MB in the end (delta: 383.8MB). Free memory was 54.2MB in the beginning and 334.3MB in the end (delta: -280.0MB). Peak memory consumption was 272.1MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,188 INFO L158 Benchmark]: Witness Printer took 44.64ms. Allocated memory is still 478.2MB. Free memory was 334.3MB in the beginning and 331.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:00:39,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.15ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 68.6MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.65ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.98ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 65.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 433.48ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 54.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 43563.56ms. Allocated memory was 94.4MB in the beginning and 478.2MB in the end (delta: 383.8MB). Free memory was 54.2MB in the beginning and 334.3MB in the end (delta: -280.0MB). Peak memory consumption was 272.1MB. Max. memory is 16.1GB. * Witness Printer took 44.64ms. Allocated memory is still 478.2MB. Free memory was 334.3MB in the beginning and 331.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.5s, OverallIterations: 13, TraceHistogramMax: 62, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1202 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1202 mSDsluCounter, 947 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 23 IncrementalHoareTripleChecker+Unchecked, 758 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 966 IncrementalHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 189 mSDtfsCounter, 966 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2050 GetRequests, 1548 SyntacticMatches, 5 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13004 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=12, InterpolantAutomatonStates: 376, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 368 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 101 NumberOfFragments, 142 HoareAnnotationTreeSize, 4 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 4059 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 1891 NumberOfCodeBlocks, 1571 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2713 ConstructedInterpolants, 181 QuantifiedInterpolants, 16467 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3721 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 32 InterpolantComputations, 4 PerfectInterpolantSequences, 26190/35105 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2022-11-02 21:00:39,216 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,218 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,218 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,227 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] [2022-11-02 21:00:39,227 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_init_~i~0#1_110,QUANTIFIED] Derived loop invariant: (((((a == a && size == 100000) && i == 0) && flag == 0) && a == 0) && a == a) || (((((a == a && size == 100000) && (\exists v_ULTIMATE.start_init_~i~0#1_110 : int :: (!(#memory_$Pointer$[a][a + v_ULTIMATE.start_init_~i~0#1_110 * 4] == 0) && v_ULTIMATE.start_init_~i~0#1_110 < size) && i <= v_ULTIMATE.start_init_~i~0#1_110 + 1)) && flag == 0) && a == 0) && a == a) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 <= flag - InvariantResult [Line: 35]: Loop Invariant [2022-11-02 21:00:39,228 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-02 21:00:39,229 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,229 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,229 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,229 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,229 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,230 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,230 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,230 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,230 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,231 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-02 21:00:39,231 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,231 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,231 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,232 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,232 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,232 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-02 21:00:39,232 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,232 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] [2022-11-02 21:00:39,233 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~1#1,QUANTIFIED] Derived loop invariant: ((((((i <= 99999 && #memory_$Pointer$[a][a] == 0) && #memory_$Pointer$[a][a] == 0) && (forall ULTIMATE.start_main_~i~1#1 : int :: (!(#memory_$Pointer$[a][a + ULTIMATE.start_main_~i~1#1 * 4] == 0) || !(ULTIMATE.start_main_~i~1#1 < 100000)) || ULTIMATE.start_main_~i~1#1 <= 99998)) && flag == 0) && a == 0) || (((i == 0 && (forall ULTIMATE.start_main_~i~1#1 : int :: (!(#memory_$Pointer$[a][a + ULTIMATE.start_main_~i~1#1 * 4] == 0) || !(ULTIMATE.start_main_~i~1#1 < 100000)) || ULTIMATE.start_main_~i~1#1 <= 99998)) && flag == 0) && a == 0)) || 1 <= flag RESULT: Ultimate proved your program to be correct! [2022-11-02 21:00:39,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa6d04a4-45a7-4ea8-b2e1-1207bf568885/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE