./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD --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 fc74ae7e31589f228260101e75826f872a5ff2be20b18370840af309ca05fc6e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:58:21,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:58:21,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:58:21,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:58:21,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:58:21,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:58:21,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:58:21,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:58:21,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:58:21,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:58:21,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:58:21,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:58:21,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:58:21,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:58:21,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:58:21,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:58:21,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:58:21,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:58:21,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:58:21,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:58:21,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:58:21,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:58:21,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:58:21,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:58:21,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:58:21,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:58:21,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:58:21,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:58:21,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:58:21,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:58:21,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:58:21,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:58:21,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:58:21,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:58:21,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:58:21,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:58:21,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:58:21,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:58:21,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:58:21,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:58:21,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:58:21,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:58:21,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:58:21,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:58:21,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:58:21,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:58:21,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:58:21,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:58:21,213 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:58:21,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:58:21,214 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:58:21,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:58:21,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:58:21,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:58:21,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:58:21,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:58:21,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:58:21,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:58:21,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:58:21,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:58:21,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:58:21,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:58:21,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:58:21,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:58:21,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:58:21,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:58:21,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:58:21,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:58:21,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:58:21,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:58:21,218 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:58:21,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:58:21,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:58:21,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:58:21,219 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_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc74ae7e31589f228260101e75826f872a5ff2be20b18370840af309ca05fc6e [2021-10-28 22:58:21,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:58:21,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:58:21,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:58:21,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:58:21,483 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:58:21,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2021-10-28 22:58:21,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/data/c8fe0cc49/ee0358b9aeaa43fa980b6e96347efc37/FLAG30bd9b26e [2021-10-28 22:58:22,062 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:58:22,063 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2021-10-28 22:58:22,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/data/c8fe0cc49/ee0358b9aeaa43fa980b6e96347efc37/FLAG30bd9b26e [2021-10-28 22:58:22,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/data/c8fe0cc49/ee0358b9aeaa43fa980b6e96347efc37 [2021-10-28 22:58:22,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:58:22,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:58:22,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:22,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:58:22,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:58:22,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71591222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22, skipping insertion in model container [2021-10-28 22:58:22,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:58:22,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:58:22,721 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2021-10-28 22:58:22,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2021-10-28 22:58:22,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2021-10-28 22:58:22,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2021-10-28 22:58:22,740 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2021-10-28 22:58:22,742 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2021-10-28 22:58:22,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2021-10-28 22:58:22,747 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2021-10-28 22:58:22,749 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2021-10-28 22:58:22,751 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2021-10-28 22:58:22,754 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2021-10-28 22:58:22,755 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2021-10-28 22:58:22,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2021-10-28 22:58:22,760 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2021-10-28 22:58:22,762 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2021-10-28 22:58:22,764 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2021-10-28 22:58:22,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2021-10-28 22:58:22,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:22,776 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:58:22,791 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2021-10-28 22:58:22,792 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2021-10-28 22:58:22,794 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2021-10-28 22:58:22,795 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2021-10-28 22:58:22,798 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2021-10-28 22:58:22,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2021-10-28 22:58:22,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2021-10-28 22:58:22,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2021-10-28 22:58:22,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2021-10-28 22:58:22,806 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2021-10-28 22:58:22,809 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2021-10-28 22:58:22,812 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2021-10-28 22:58:22,814 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2021-10-28 22:58:22,818 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2021-10-28 22:58:22,821 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2021-10-28 22:58:22,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2021-10-28 22:58:22,825 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2021-10-28 22:58:22,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:22,840 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:58:22,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22 WrapperNode [2021-10-28 22:58:22,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:22,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:22,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:58:22,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:58:22,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:22,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:58:22,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:58:22,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:58:22,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:58:22,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:58:22,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:58:22,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:58:22,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (1/1) ... [2021-10-28 22:58:22,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:58:22,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:23,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:23,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:58:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:58:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:58:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:58:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:58:23,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:58:23,467 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 22:58:23,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:23 BoogieIcfgContainer [2021-10-28 22:58:23,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:58:23,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:58:23,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:58:23,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:58:23,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:58:22" (1/3) ... [2021-10-28 22:58:23,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5bc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:23, skipping insertion in model container [2021-10-28 22:58:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:22" (2/3) ... [2021-10-28 22:58:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5bc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:23, skipping insertion in model container [2021-10-28 22:58:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:23" (3/3) ... [2021-10-28 22:58:23,501 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2021-10-28 22:58:23,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:58:23,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-28 22:58:23,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:58:23,558 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:58:23,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-28 22:58:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 53 states have (on average 1.849056603773585) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:58:23,588 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:23,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:23,589 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:23,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 123971630, now seen corresponding path program 1 times [2021-10-28 22:58:23,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:23,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659858142] [2021-10-28 22:58:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:23,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:23,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:23,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659858142] [2021-10-28 22:58:23,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659858142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:23,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:23,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:23,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108138035] [2021-10-28 22:58:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:23,871 INFO L87 Difference]: Start difference. First operand has 71 states, 53 states have (on average 1.849056603773585) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:24,018 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2021-10-28 22:58:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:24,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 22:58:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:24,029 INFO L225 Difference]: With dead ends: 125 [2021-10-28 22:58:24,029 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 22:58:24,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 22:58:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 65. [2021-10-28 22:58:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-28 22:58:24,067 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2021-10-28 22:58:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-28 22:58:24,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-28 22:58:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:58:24,069 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:24,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:24,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:58:24,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 120336139, now seen corresponding path program 1 times [2021-10-28 22:58:24,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:24,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620984947] [2021-10-28 22:58:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:24,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:24,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:24,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620984947] [2021-10-28 22:58:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620984947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:24,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:24,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:24,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935035351] [2021-10-28 22:58:24,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:24,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:24,137 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:24,228 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-10-28 22:58:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:24,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 22:58:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:24,234 INFO L225 Difference]: With dead ends: 65 [2021-10-28 22:58:24,234 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 22:58:24,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 22:58:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-28 22:58:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-10-28 22:58:24,247 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 8 [2021-10-28 22:58:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:24,248 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-28 22:58:24,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-10-28 22:58:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 22:58:24,249 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:24,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:24,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:58:24,249 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -564542931, now seen corresponding path program 1 times [2021-10-28 22:58:24,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:24,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833699363] [2021-10-28 22:58:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:24,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:24,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:24,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833699363] [2021-10-28 22:58:24,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833699363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:24,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:24,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:24,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955511660] [2021-10-28 22:58:24,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:24,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:24,371 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:24,454 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-10-28 22:58:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 22:58:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:24,457 INFO L225 Difference]: With dead ends: 69 [2021-10-28 22:58:24,457 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 22:58:24,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 22:58:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-10-28 22:58:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-28 22:58:24,465 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 9 [2021-10-28 22:58:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:24,465 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-28 22:58:24,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-28 22:58:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:58:24,466 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:24,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:24,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:58:24,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash -429055130, now seen corresponding path program 1 times [2021-10-28 22:58:24,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:24,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055907029] [2021-10-28 22:58:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:24,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:24,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:24,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055907029] [2021-10-28 22:58:24,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055907029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:24,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:24,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:24,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049143291] [2021-10-28 22:58:24,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:24,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:24,576 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:24,678 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-28 22:58:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:24,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 22:58:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:24,683 INFO L225 Difference]: With dead ends: 67 [2021-10-28 22:58:24,684 INFO L226 Difference]: Without dead ends: 65 [2021-10-28 22:58:24,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-28 22:58:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-10-28 22:58:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.36) internal successors, (68), 63 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) [2021-10-28 22:58:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-10-28 22:58:24,698 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 11 [2021-10-28 22:58:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:24,699 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-10-28 22:58:24,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-10-28 22:58:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:58:24,700 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:24,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:24,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:58:24,700 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1359750351, now seen corresponding path program 1 times [2021-10-28 22:58:24,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:24,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652090623] [2021-10-28 22:58:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:24,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:24,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:24,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652090623] [2021-10-28 22:58:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652090623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:24,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:24,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:24,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690800847] [2021-10-28 22:58:24,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:24,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:24,801 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:24,906 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-10-28 22:58:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 22:58:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:24,912 INFO L225 Difference]: With dead ends: 65 [2021-10-28 22:58:24,913 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 22:58:24,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 22:58:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-10-28 22:58:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.346938775510204) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-28 22:58:24,928 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 11 [2021-10-28 22:58:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:24,929 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-28 22:58:24,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-28 22:58:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:58:24,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:24,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:24,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:58:24,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -415802953, now seen corresponding path program 1 times [2021-10-28 22:58:24,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:24,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996905829] [2021-10-28 22:58:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:24,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996905829] [2021-10-28 22:58:25,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996905829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:25,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343889513] [2021-10-28 22:58:25,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:25,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:25,018 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-28 22:58:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,073 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2021-10-28 22:58:25,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:25,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-10-28 22:58:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,074 INFO L225 Difference]: With dead ends: 63 [2021-10-28 22:58:25,074 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 22:58:25,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 22:58:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-10-28 22:58:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-10-28 22:58:25,080 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 12 [2021-10-28 22:58:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,081 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-10-28 22:58:25,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-28 22:58:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-10-28 22:58:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:58:25,082 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,082 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:58:25,083 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -415312395, now seen corresponding path program 1 times [2021-10-28 22:58:25,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959302078] [2021-10-28 22:58:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959302078] [2021-10-28 22:58:25,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959302078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:25,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115201592] [2021-10-28 22:58:25,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:25,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:25,127 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-28 22:58:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,222 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-10-28 22:58:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2021-10-28 22:58:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,224 INFO L225 Difference]: With dead ends: 100 [2021-10-28 22:58:25,224 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 22:58:25,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 22:58:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 56. [2021-10-28 22:58:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-10-28 22:58:25,230 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 12 [2021-10-28 22:58:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,231 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-10-28 22:58:25,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-28 22:58:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-10-28 22:58:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:58:25,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:58:25,233 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 797416153, now seen corresponding path program 1 times [2021-10-28 22:58:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132330751] [2021-10-28 22:58:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132330751] [2021-10-28 22:58:25,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132330751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:25,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954365680] [2021-10-28 22:58:25,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:25,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:25,269 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-28 22:58:25,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,309 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-10-28 22:58:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-10-28 22:58:25,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,311 INFO L225 Difference]: With dead ends: 57 [2021-10-28 22:58:25,311 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 22:58:25,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 22:58:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-10-28 22:58:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-28 22:58:25,316 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 12 [2021-10-28 22:58:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-28 22:58:25,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-28 22:58:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-28 22:58:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:58:25,317 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,318 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:58:25,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 10221853, now seen corresponding path program 1 times [2021-10-28 22:58:25,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399503221] [2021-10-28 22:58:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399503221] [2021-10-28 22:58:25,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399503221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:25,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911440363] [2021-10-28 22:58:25,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:25,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:25,424 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,576 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2021-10-28 22:58:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:25,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-28 22:58:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,578 INFO L225 Difference]: With dead ends: 118 [2021-10-28 22:58:25,578 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 22:58:25,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 22:58:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 57. [2021-10-28 22:58:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-10-28 22:58:25,584 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 13 [2021-10-28 22:58:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,585 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-10-28 22:58:25,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-10-28 22:58:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:58:25,586 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:58:25,587 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1032848570, now seen corresponding path program 1 times [2021-10-28 22:58:25,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198817987] [2021-10-28 22:58:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198817987] [2021-10-28 22:58:25,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198817987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:25,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13890997] [2021-10-28 22:58:25,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:25,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:25,626 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,730 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-10-28 22:58:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:25,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-28 22:58:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,733 INFO L225 Difference]: With dead ends: 74 [2021-10-28 22:58:25,733 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 22:58:25,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 22:58:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-10-28 22:58:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-10-28 22:58:25,738 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 13 [2021-10-28 22:58:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,738 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-10-28 22:58:25,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-10-28 22:58:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:58:25,739 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:58:25,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1031124666, now seen corresponding path program 1 times [2021-10-28 22:58:25,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454161857] [2021-10-28 22:58:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454161857] [2021-10-28 22:58:25,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454161857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:25,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826169282] [2021-10-28 22:58:25,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:25,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:25,777 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:25,831 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-10-28 22:58:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:25,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-28 22:58:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:25,832 INFO L225 Difference]: With dead ends: 55 [2021-10-28 22:58:25,832 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 22:58:25,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 22:58:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 22:58:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-28 22:58:25,837 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2021-10-28 22:58:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:25,837 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-28 22:58:25,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-28 22:58:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 22:58:25,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:25,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:58:25,839 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 310078394, now seen corresponding path program 1 times [2021-10-28 22:58:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:25,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857509182] [2021-10-28 22:58:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:25,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:25,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:25,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857509182] [2021-10-28 22:58:25,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857509182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:25,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:25,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:25,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353005390] [2021-10-28 22:58:25,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:25,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:25,929 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,018 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2021-10-28 22:58:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 22:58:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,020 INFO L225 Difference]: With dead ends: 78 [2021-10-28 22:58:26,020 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 22:58:26,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 22:58:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2021-10-28 22:58:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-28 22:58:26,026 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 14 [2021-10-28 22:58:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,026 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-28 22:58:26,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-28 22:58:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 22:58:26,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:58:26,027 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1953530500, now seen corresponding path program 1 times [2021-10-28 22:58:26,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991975799] [2021-10-28 22:58:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991975799] [2021-10-28 22:58:26,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991975799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:26,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817778094] [2021-10-28 22:58:26,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:26,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:26,126 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,219 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-10-28 22:58:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:26,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 22:58:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,220 INFO L225 Difference]: With dead ends: 92 [2021-10-28 22:58:26,220 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 22:58:26,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 22:58:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2021-10-28 22:58:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 60 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) [2021-10-28 22:58:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-10-28 22:58:26,225 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2021-10-28 22:58:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,225 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-10-28 22:58:26,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-10-28 22:58:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 22:58:26,226 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:58:26,227 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1951983355, now seen corresponding path program 1 times [2021-10-28 22:58:26,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644875950] [2021-10-28 22:58:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644875950] [2021-10-28 22:58:26,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644875950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882870500] [2021-10-28 22:58:26,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:58:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:26,265 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,351 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2021-10-28 22:58:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 22:58:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,353 INFO L225 Difference]: With dead ends: 81 [2021-10-28 22:58:26,353 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 22:58:26,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 22:58:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2021-10-28 22:58:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-28 22:58:26,360 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 14 [2021-10-28 22:58:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,361 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-28 22:58:26,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-28 22:58:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 22:58:26,362 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 22:58:26,364 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1900089420, now seen corresponding path program 1 times [2021-10-28 22:58:26,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615072404] [2021-10-28 22:58:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615072404] [2021-10-28 22:58:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615072404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:26,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474289759] [2021-10-28 22:58:26,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:26,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:26,463 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,542 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-10-28 22:58:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 22:58:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,543 INFO L225 Difference]: With dead ends: 70 [2021-10-28 22:58:26,543 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 22:58:26,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 22:58:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-10-28 22:58:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-28 22:58:26,549 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2021-10-28 22:58:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,550 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-28 22:58:26,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-28 22:58:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 22:58:26,551 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 22:58:26,551 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash -381937728, now seen corresponding path program 1 times [2021-10-28 22:58:26,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882254073] [2021-10-28 22:58:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882254073] [2021-10-28 22:58:26,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882254073] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:26,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79578687] [2021-10-28 22:58:26,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:26,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:26,632 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-28 22:58:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,730 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2021-10-28 22:58:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:58:26,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 [2021-10-28 22:58:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,731 INFO L225 Difference]: With dead ends: 87 [2021-10-28 22:58:26,732 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 22:58:26,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:58:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 22:58:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2021-10-28 22:58:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.25) internal successors, (70), 62 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-10-28 22:58:26,739 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2021-10-28 22:58:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,740 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-10-28 22:58:26,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-28 22:58:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-10-28 22:58:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 22:58:26,742 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 22:58:26,743 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -441974753, now seen corresponding path program 1 times [2021-10-28 22:58:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561197206] [2021-10-28 22:58:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561197206] [2021-10-28 22:58:26,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561197206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:26,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463553117] [2021-10-28 22:58:26,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:26,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:26,780 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,805 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-10-28 22:58:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 22:58:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,806 INFO L225 Difference]: With dead ends: 63 [2021-10-28 22:58:26,806 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 22:58:26,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 22:58:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 22:58:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 60 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) [2021-10-28 22:58:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-10-28 22:58:26,812 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 16 [2021-10-28 22:58:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,814 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-10-28 22:58:26,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-10-28 22:58:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:58:26,815 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,815 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 22:58:26,816 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -816311340, now seen corresponding path program 1 times [2021-10-28 22:58:26,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583587162] [2021-10-28 22:58:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:26,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:26,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583587162] [2021-10-28 22:58:26,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583587162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:26,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:26,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:26,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10812764] [2021-10-28 22:58:26,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:58:26,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:26,868 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:26,904 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-28 22:58:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:58:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 22:58:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:26,905 INFO L225 Difference]: With dead ends: 61 [2021-10-28 22:58:26,906 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 22:58:26,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 22:58:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-28 22:58:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-10-28 22:58:26,911 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 17 [2021-10-28 22:58:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:26,911 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-10-28 22:58:26,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-10-28 22:58:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:58:26,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:26,912 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:26,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 22:58:26,913 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -508949322, now seen corresponding path program 1 times [2021-10-28 22:58:26,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205002127] [2021-10-28 22:58:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:27,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:27,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205002127] [2021-10-28 22:58:27,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205002127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:27,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957666309] [2021-10-28 22:58:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:27,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:58:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:58:27,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:27,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957666309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:27,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:58:27,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-28 22:58:27,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842629579] [2021-10-28 22:58:27,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:58:27,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:58:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:58:27,583 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:27,793 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2021-10-28 22:58:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 22:58:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:58:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:27,794 INFO L225 Difference]: With dead ends: 104 [2021-10-28 22:58:27,795 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 22:58:27,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:58:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 22:58:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 53. [2021-10-28 22:58:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2021-10-28 22:58:27,801 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 18 [2021-10-28 22:58:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:27,801 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2021-10-28 22:58:27,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2021-10-28 22:58:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:58:27,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:27,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:27,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:28,014 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,014 INFO L85 PathProgramCache]: Analyzing trace with hash 479271318, now seen corresponding path program 1 times [2021-10-28 22:58:28,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026616821] [2021-10-28 22:58:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:28,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026616821] [2021-10-28 22:58:28,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026616821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:28,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:28,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:28,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686447269] [2021-10-28 22:58:28,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:28,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:28,067 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:28,160 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-10-28 22:58:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:58:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:28,162 INFO L225 Difference]: With dead ends: 68 [2021-10-28 22:58:28,162 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 22:58:28,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 22:58:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2021-10-28 22:58:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-28 22:58:28,167 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2021-10-28 22:58:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:28,167 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-28 22:58:28,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-28 22:58:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:58:28,168 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:28,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:28,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 22:58:28,169 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash 397067279, now seen corresponding path program 1 times [2021-10-28 22:58:28,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532832378] [2021-10-28 22:58:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:28,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532832378] [2021-10-28 22:58:28,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532832378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:28,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:28,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:28,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584214312] [2021-10-28 22:58:28,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:28,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:28,251 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:28,342 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-10-28 22:58:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 22:58:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:28,344 INFO L225 Difference]: With dead ends: 60 [2021-10-28 22:58:28,344 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 22:58:28,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 22:58:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2021-10-28 22:58:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-10-28 22:58:28,349 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 19 [2021-10-28 22:58:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:28,349 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-10-28 22:58:28,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-10-28 22:58:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:58:28,350 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:28,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:28,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 22:58:28,351 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 450508359, now seen corresponding path program 1 times [2021-10-28 22:58:28,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730843115] [2021-10-28 22:58:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:28,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730843115] [2021-10-28 22:58:28,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730843115] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:28,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:28,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:58:28,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257752235] [2021-10-28 22:58:28,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:58:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:58:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:58:28,409 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:28,477 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-10-28 22:58:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 22:58:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:28,478 INFO L225 Difference]: With dead ends: 43 [2021-10-28 22:58:28,478 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 22:58:28,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 22:58:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 22:58:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-28 22:58:28,481 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2021-10-28 22:58:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:28,482 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-28 22:58:28,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-28 22:58:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:58:28,483 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:28,483 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:28,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 22:58:28,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-10-28 22:58:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1395641153, now seen corresponding path program 1 times [2021-10-28 22:58:28,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318551613] [2021-10-28 22:58:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:28,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318551613] [2021-10-28 22:58:28,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318551613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:28,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231437306] [2021-10-28 22:58:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:28,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:28,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:58:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:58:28,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231437306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:28,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:58:28,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-28 22:58:28,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090170134] [2021-10-28 22:58:28,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:58:28,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:58:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:58:28,916 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:28,998 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-28 22:58:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:58:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 22:58:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:28,999 INFO L225 Difference]: With dead ends: 31 [2021-10-28 22:58:28,999 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 22:58:29,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-28 22:58:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 22:58:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 22:58:29,000 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) [2021-10-28 22:58:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 22:58:29,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-28 22:58:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:29,001 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:29,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:58:29,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 22:58:29,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:58:29,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:29,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:29,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 22:58:29,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:58:29,930 INFO L857 garLoopResultBuilder]: For program point L225(line 225) no Hoare annotation was computed. [2021-10-28 22:58:29,930 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2021-10-28 22:58:29,931 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 358) no Hoare annotation was computed. [2021-10-28 22:58:29,931 INFO L853 garLoopResultBuilder]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2021-10-28 22:58:29,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2021-10-28 22:58:29,931 INFO L857 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 316) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 252) no Hoare annotation was computed. [2021-10-28 22:58:29,932 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 362) no Hoare annotation was computed. [2021-10-28 22:58:29,933 INFO L857 garLoopResultBuilder]: For program point L127(line 127) no Hoare annotation was computed. [2021-10-28 22:58:29,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2021-10-28 22:58:29,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 22:58:29,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 22:58:29,933 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 374) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 243) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point L351(line 351) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2021-10-28 22:58:29,934 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 161) no Hoare annotation was computed. [2021-10-28 22:58:29,935 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 254) no Hoare annotation was computed. [2021-10-28 22:58:29,935 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2021-10-28 22:58:29,935 INFO L857 garLoopResultBuilder]: For program point L310(line 310) no Hoare annotation was computed. [2021-10-28 22:58:29,935 INFO L857 garLoopResultBuilder]: For program point L277(lines 277 364) no Hoare annotation was computed. [2021-10-28 22:58:29,935 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2021-10-28 22:58:29,936 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 95) no Hoare annotation was computed. [2021-10-28 22:58:29,936 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2021-10-28 22:58:29,936 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 197) no Hoare annotation was computed. [2021-10-28 22:58:29,936 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 204) no Hoare annotation was computed. [2021-10-28 22:58:29,936 INFO L857 garLoopResultBuilder]: For program point L237(line 237) no Hoare annotation was computed. [2021-10-28 22:58:29,937 INFO L853 garLoopResultBuilder]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~main__t~0 1)) (.cse1 (+ ULTIMATE.start_main_~main__tagbuf_len~0 1))) (let ((.cse0 (let ((.cse3 (<= 1 ULTIMATE.start_main_~main__t~0)) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 (not (= ULTIMATE.start_main_~main__tagbuf_len~0 0)) .cse2 .cse4 (< 0 .cse1)) (and .cse3 .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))))))) (or (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17) (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) (< ULTIMATE.start_main_~main__t~0 .cse1) (or (and .cse2 .cse0) (= ULTIMATE.start_main_~main__t~0 0)))))) [2021-10-28 22:58:29,937 INFO L853 garLoopResultBuilder]: At program point L196(lines 60 254) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2021-10-28 22:58:29,937 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2021-10-28 22:58:29,937 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-28 22:58:29,937 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-28 22:58:29,938 INFO L857 garLoopResultBuilder]: For program point L279(line 279) no Hoare annotation was computed. [2021-10-28 22:58:29,938 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 360) no Hoare annotation was computed. [2021-10-28 22:58:29,938 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2021-10-28 22:58:29,948 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 210) no Hoare annotation was computed. [2021-10-28 22:58:29,948 INFO L857 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-10-28 22:58:29,948 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 318) no Hoare annotation was computed. [2021-10-28 22:58:29,948 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 368) no Hoare annotation was computed. [2021-10-28 22:58:29,948 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 22:58:29,949 INFO L857 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2021-10-28 22:58:29,949 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-28 22:58:29,949 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 369) no Hoare annotation was computed. [2021-10-28 22:58:29,949 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-10-28 22:58:29,949 INFO L857 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-10-28 22:58:29,950 INFO L857 garLoopResultBuilder]: For program point L289(lines 289 363) no Hoare annotation was computed. [2021-10-28 22:58:29,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 22:58:29,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2021-10-28 22:58:29,950 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 245) no Hoare annotation was computed. [2021-10-28 22:58:29,950 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 93) no Hoare annotation was computed. [2021-10-28 22:58:29,951 INFO L857 garLoopResultBuilder]: For program point L339(line 339) no Hoare annotation was computed. [2021-10-28 22:58:29,951 INFO L857 garLoopResultBuilder]: For program point L141(lines 141 163) no Hoare annotation was computed. [2021-10-28 22:58:29,951 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 256) no Hoare annotation was computed. [2021-10-28 22:58:29,951 INFO L857 garLoopResultBuilder]: For program point L298(line 298) no Hoare annotation was computed. [2021-10-28 22:58:29,951 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 202) no Hoare annotation was computed. [2021-10-28 22:58:29,952 INFO L860 garLoopResultBuilder]: At program point L315(lines 32 368) the Hoare annotation is: true [2021-10-28 22:58:29,952 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2021-10-28 22:58:29,952 INFO L857 garLoopResultBuilder]: For program point L216(lines 216 251) no Hoare annotation was computed. [2021-10-28 22:58:29,952 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-10-28 22:58:29,952 INFO L860 garLoopResultBuilder]: At program point L373(lines 15 375) the Hoare annotation is: true [2021-10-28 22:58:29,953 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 199) no Hoare annotation was computed. [2021-10-28 22:58:29,953 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2021-10-28 22:58:29,953 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 366) no Hoare annotation was computed. [2021-10-28 22:58:29,953 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 201) no Hoare annotation was computed. [2021-10-28 22:58:29,954 INFO L853 garLoopResultBuilder]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse3 (<= 0 ULTIMATE.start_main_~main__t~0))) (or (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)) .cse2 .cse3) (and .cse2 .cse1 .cse3))))) (or (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17) (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) (<= 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 .cse1)))) [2021-10-28 22:58:29,957 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:29,959 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:58:29,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:58:29 BoogieIcfgContainer [2021-10-28 22:58:29,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:58:29,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:58:29,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:58:29,979 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:58:29,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:23" (3/4) ... [2021-10-28 22:58:29,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:58:29,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 22:58:29,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 22:58:29,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:58:29,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:58:30,063 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:58:30,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:58:30,065 INFO L168 Benchmark]: Toolchain (without parser) took 7614.17 ms. Allocated memory was 88.1 MB in the beginning and 167.8 MB in the end (delta: 79.7 MB). Free memory was 55.7 MB in the beginning and 135.5 MB in the end (delta: -79.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:30,065 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:30,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.90 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 86.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:30,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.37 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:30,067 INFO L168 Benchmark]: Boogie Preprocessor took 64.38 ms. Allocated memory is still 115.3 MB. Free memory was 84.3 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:30,067 INFO L168 Benchmark]: RCFGBuilder took 501.17 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 69.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:30,068 INFO L168 Benchmark]: TraceAbstraction took 6507.43 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 68.3 MB in the beginning and 140.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:30,068 INFO L168 Benchmark]: Witness Printer took 84.38 ms. Allocated memory is still 167.8 MB. Free memory was 140.6 MB in the beginning and 135.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:30,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.90 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 86.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.37 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.38 ms. Allocated memory is still 115.3 MB. Free memory was 84.3 MB in the beginning and 82.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.17 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 69.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6507.43 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 68.3 MB in the beginning and 140.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * Witness Printer took 84.38 ms. Allocated memory is still 167.8 MB. Free memory was 140.6 MB in the beginning and 135.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: 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, 71 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 1404 SDslu, 1445 SDs, 0 SdLazy, 1729 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, InterpolantAutomatonStates: 139, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 349 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 17 NumberOfFragments, 191 HoareAnnotationTreeSize, 6 FomulaSimplifications, 665720 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 78994 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1540 SizeOfPredicates, 6 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 4/16 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 17 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && 1 <= main__t) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((main__t <= main__tagbuf_len && 1 <= main__t) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && main__t < main__tagbuf_len) && (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t) || ((!(__VERIFIER_assert__cond == 0) && main__t == 0) && 0 <= main__t))) || (((!(main__t == main__tagbuf_len) && 0 <= main__tagbuf_len) && (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t) || ((!(__VERIFIER_assert__cond == 0) && main__t == 0) && 0 <= main__t))) && main__t == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && main__t < main__tagbuf_len) && (((((1 <= main__t && !(main__tagbuf_len == 0)) && main__t <= 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__tagbuf_len + 1) || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) || ((!(main__t == main__tagbuf_len) && main__t < main__tagbuf_len + 1) && ((main__t <= 1 && (((((1 <= main__t && !(main__tagbuf_len == 0)) && main__t <= 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__tagbuf_len + 1) || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) || main__t == 0)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 22:58:30,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b50480a-5785-4691-8f6c-17c158ec0150/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...