./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:05:50,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:05:50,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:05:50,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:05:50,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:05:50,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:05:50,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:05:50,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:05:50,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:05:50,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:05:50,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:05:50,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:05:50,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:05:50,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:05:50,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:05:50,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:05:50,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:05:50,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:05:50,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:05:50,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:05:50,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:05:50,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:05:50,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:05:50,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:05:50,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:05:50,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:05:50,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:05:50,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:05:50,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:05:50,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:05:50,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:05:50,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:05:50,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:05:50,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:05:50,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:05:50,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:05:50,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:05:50,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:05:50,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:05:50,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:05:50,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:05:50,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:05:50,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:05:50,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:05:50,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:05:50,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:05:50,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:05:50,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:05:50,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:05:50,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:05:50,202 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:05:50,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:05:50,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:50,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:05:50,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:05:50,204 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_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93d1510274ba16ddd1276e8e93ff0a644bf6fb4a262c4c9dde32fe8591d5ce8c [2021-12-06 23:05:50,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:05:50,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:05:50,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:05:50,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:05:50,399 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:05:50,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-12-06 23:05:50,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/data/12197fe30/b26537adc9644f9fa006194e793f48c0/FLAGd4f906a2b [2021-12-06 23:05:50,877 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:05:50,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/sv-benchmarks/c/list-simple/dll2n_insert_equal.i [2021-12-06 23:05:50,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/data/12197fe30/b26537adc9644f9fa006194e793f48c0/FLAGd4f906a2b [2021-12-06 23:05:50,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/data/12197fe30/b26537adc9644f9fa006194e793f48c0 [2021-12-06 23:05:50,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:05:50,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:05:50,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:50,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:05:50,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:05:50,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:50" (1/1) ... [2021-12-06 23:05:50,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df5f11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:50, skipping insertion in model container [2021-12-06 23:05:50,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:50" (1/1) ... [2021-12-06 23:05:50,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:05:50,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:05:51,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-12-06 23:05:51,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:51,196 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:05:51,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/sv-benchmarks/c/list-simple/dll2n_insert_equal.i[24706,24719] [2021-12-06 23:05:51,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:51,258 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:05:51,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51 WrapperNode [2021-12-06 23:05:51,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:51,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:51,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:05:51,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:05:51,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,304 INFO L137 Inliner]: procedures = 127, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 139 [2021-12-06 23:05:51,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:51,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:05:51,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:05:51,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:05:51,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:05:51,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:05:51,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:05:51,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:05:51,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (1/1) ... [2021-12-06 23:05:51,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:51,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:05:51,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:05:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 23:05:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:05:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:05:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:05:51,458 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:05:51,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:05:51,476 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 23:05:51,722 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:05:51,727 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:05:51,727 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 23:05:51,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:51 BoogieIcfgContainer [2021-12-06 23:05:51,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:05:51,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:05:51,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:05:51,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:05:51,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:05:50" (1/3) ... [2021-12-06 23:05:51,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b053f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:51, skipping insertion in model container [2021-12-06 23:05:51,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:51" (2/3) ... [2021-12-06 23:05:51,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b053f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:51, skipping insertion in model container [2021-12-06 23:05:51,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:51" (3/3) ... [2021-12-06 23:05:51,735 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2021-12-06 23:05:51,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:05:51,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-12-06 23:05:51,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:05:51,781 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-06 23:05:51,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-12-06 23:05:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 115 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 23:05:51,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:51,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 23:05:51,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2021-12-06 23:05:51,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175338246] [2021-12-06 23:05:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:51,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:51,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175338246] [2021-12-06 23:05:51,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175338246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:51,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:51,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:05:51,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30774492] [2021-12-06 23:05:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:51,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:51,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:51,959 INFO L87 Difference]: Start difference. First operand has 117 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 115 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 23:05:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:52,098 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2021-12-06 23:05:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-06 23:05:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:52,110 INFO L225 Difference]: With dead ends: 207 [2021-12-06 23:05:52,110 INFO L226 Difference]: Without dead ends: 200 [2021-12-06 23:05:52,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,115 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 110 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:52,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 230 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-06 23:05:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 108. [2021-12-06 23:05:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 58 states have (on average 2.0) internal successors, (116), 107 states have internal predecessors, (116), 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) [2021-12-06 23:05:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-12-06 23:05:52,152 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 5 [2021-12-06 23:05:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:52,152 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-12-06 23:05:52,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 23:05:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-12-06 23:05:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 23:05:52,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:52,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 23:05:52,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:05:52,153 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2021-12-06 23:05:52,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:52,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306363389] [2021-12-06 23:05:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:52,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306363389] [2021-12-06 23:05:52,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306363389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:52,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:52,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:05:52,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157217709] [2021-12-06 23:05:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:52,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:52,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,208 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 23:05:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:52,311 INFO L93 Difference]: Finished difference Result 199 states and 214 transitions. [2021-12-06 23:05:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-06 23:05:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:52,314 INFO L225 Difference]: With dead ends: 199 [2021-12-06 23:05:52,314 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 23:05:52,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,316 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 108 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:52,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 224 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 23:05:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 105. [2021-12-06 23:05:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 58 states have (on average 1.9482758620689655) internal successors, (113), 104 states have internal predecessors, (113), 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) [2021-12-06 23:05:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-12-06 23:05:52,331 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 5 [2021-12-06 23:05:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:52,331 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-12-06 23:05:52,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-06 23:05:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-12-06 23:05:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:05:52,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:52,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:52,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:05:52,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2021-12-06 23:05:52,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:52,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256214791] [2021-12-06 23:05:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:52,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256214791] [2021-12-06 23:05:52,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256214791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:52,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:52,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:05:52,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838352384] [2021-12-06 23:05:52,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:52,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:52,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,365 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 23:05:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:52,371 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-12-06 23:05:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-06 23:05:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:52,373 INFO L225 Difference]: With dead ends: 115 [2021-12-06 23:05:52,373 INFO L226 Difference]: Without dead ends: 115 [2021-12-06 23:05:52,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,374 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 10 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:52,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 220 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-06 23:05:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2021-12-06 23:05:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 59 states have (on average 1.9322033898305084) internal successors, (114), 105 states have internal predecessors, (114), 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) [2021-12-06 23:05:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2021-12-06 23:05:52,381 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 7 [2021-12-06 23:05:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:52,381 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2021-12-06 23:05:52,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-06 23:05:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2021-12-06 23:05:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:05:52,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:52,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:52,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:05:52,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2021-12-06 23:05:52,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23781965] [2021-12-06 23:05:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23781965] [2021-12-06 23:05:52,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23781965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:52,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:52,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:05:52,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232021062] [2021-12-06 23:05:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:52,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:52,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,430 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:52,441 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-12-06 23:05:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:05:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:52,442 INFO L225 Difference]: With dead ends: 112 [2021-12-06 23:05:52,442 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 23:05:52,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:52,443 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:52,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 215 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 23:05:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2021-12-06 23:05:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.859375) internal successors, (119), 110 states have internal predecessors, (119), 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) [2021-12-06 23:05:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2021-12-06 23:05:52,449 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 9 [2021-12-06 23:05:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:52,449 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2021-12-06 23:05:52,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2021-12-06 23:05:52,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:05:52,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:52,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:52,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:05:52,451 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:52,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2021-12-06 23:05:52,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:52,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814028505] [2021-12-06 23:05:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814028505] [2021-12-06 23:05:52,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814028505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:52,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961502083] [2021-12-06 23:05:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:52,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:52,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:05:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:05:52,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:52,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961502083] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:52,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:52,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-06 23:05:52,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933377026] [2021-12-06 23:05:52,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:52,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:52,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:52,638 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:52,650 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2021-12-06 23:05:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:05:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 23:05:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:52,651 INFO L225 Difference]: With dead ends: 113 [2021-12-06 23:05:52,652 INFO L226 Difference]: Without dead ends: 113 [2021-12-06 23:05:52,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:52,653 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 16 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:52,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 429 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-06 23:05:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-12-06 23:05:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.8333333333333333) internal successors, (121), 112 states have internal predecessors, (121), 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) [2021-12-06 23:05:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2021-12-06 23:05:52,657 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 14 [2021-12-06 23:05:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:52,657 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2021-12-06 23:05:52,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2021-12-06 23:05:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:05:52,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:52,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:52,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:52,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:52,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2021-12-06 23:05:52,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:52,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733509608] [2021-12-06 23:05:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:52,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:53,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:53,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733509608] [2021-12-06 23:05:53,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733509608] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:53,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967575308] [2021-12-06 23:05:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:53,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:53,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:53,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:05:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:53,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:05:53,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:53,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:53,172 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:05:53,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 23:05:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:53,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:53,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967575308] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:53,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:53,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2021-12-06 23:05:53,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039582182] [2021-12-06 23:05:53,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:53,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:05:53,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:05:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:05:53,315 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:53,397 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2021-12-06 23:05:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:05:53,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:05:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:53,398 INFO L225 Difference]: With dead ends: 124 [2021-12-06 23:05:53,398 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 23:05:53,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:05:53,400 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 307 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:53,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 91 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-06 23:05:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 23:05:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-12-06 23:05:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 66 states have (on average 1.8181818181818181) internal successors, (120), 111 states have internal predecessors, (120), 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) [2021-12-06 23:05:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2021-12-06 23:05:53,406 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 16 [2021-12-06 23:05:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:53,407 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2021-12-06 23:05:53,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2021-12-06 23:05:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:05:53,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:53,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:53,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:05:53,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:53,609 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2021-12-06 23:05:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:53,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849803778] [2021-12-06 23:05:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:53,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:53,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:53,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849803778] [2021-12-06 23:05:53,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849803778] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:53,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53691731] [2021-12-06 23:05:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:53,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:53,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:53,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:05:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:05:53,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:53,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:53,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:53,837 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:05:53,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 23:05:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:53,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:54,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-12-06 23:05:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:54,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53691731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:54,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:54,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-12-06 23:05:54,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310567414] [2021-12-06 23:05:54,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:54,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:05:54,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:05:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:05:54,080 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-12-06 23:05:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:54,192 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-12-06 23:05:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:05:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 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 [2021-12-06 23:05:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:54,193 INFO L225 Difference]: With dead ends: 123 [2021-12-06 23:05:54,194 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 23:05:54,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:54,194 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 659 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:54,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 100 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 113 Invalid, 0 Unknown, 99 Unchecked, 0.1s Time] [2021-12-06 23:05:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 23:05:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2021-12-06 23:05:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.803030303030303) internal successors, (119), 110 states have internal predecessors, (119), 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) [2021-12-06 23:05:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2021-12-06 23:05:54,200 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 16 [2021-12-06 23:05:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:54,200 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2021-12-06 23:05:54,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-12-06 23:05:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2021-12-06 23:05:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:05:54,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:54,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:54,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:05:54,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 23:05:54,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957328, now seen corresponding path program 2 times [2021-12-06 23:05:54,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:54,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109272428] [2021-12-06 23:05:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:54,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:54,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:54,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109272428] [2021-12-06 23:05:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109272428] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889570046] [2021-12-06 23:05:54,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:54,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:54,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:54,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:05:54,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 23:05:54,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:05:54,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:54,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:54,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:05:54,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889570046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:54,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:05:54,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-12-06 23:05:54,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516769217] [2021-12-06 23:05:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:54,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:54,656 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2021-12-06 23:05:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:54,703 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-12-06 23:05:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 21 [2021-12-06 23:05:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:54,704 INFO L225 Difference]: With dead ends: 120 [2021-12-06 23:05:54,704 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 23:05:54,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:54,705 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 90 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:54,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 77 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 23:05:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2021-12-06 23:05:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.7575757575757576) internal successors, (116), 107 states have internal predecessors, (116), 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) [2021-12-06 23:05:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-12-06 23:05:54,711 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 21 [2021-12-06 23:05:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:54,711 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-12-06 23:05:54,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2021-12-06 23:05:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-12-06 23:05:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:05:54,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:54,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:54,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:54,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:54,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 1 times [2021-12-06 23:05:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:54,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068612318] [2021-12-06 23:05:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:54,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:55,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:55,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068612318] [2021-12-06 23:05:55,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068612318] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:55,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145869143] [2021-12-06 23:05:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:55,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:55,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:55,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:05:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:55,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:05:55,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:55,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:55,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145869143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:55,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:55,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-12-06 23:05:55,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957807875] [2021-12-06 23:05:55,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:55,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:55,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:05:55,204 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:55,222 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-12-06 23:05:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:05:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:05:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:55,223 INFO L225 Difference]: With dead ends: 108 [2021-12-06 23:05:55,223 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 23:05:55,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:55,224 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 199 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:55,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 104 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 23:05:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-06 23:05:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 107 states have internal predecessors, (115), 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) [2021-12-06 23:05:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2021-12-06 23:05:55,229 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 21 [2021-12-06 23:05:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:55,229 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2021-12-06 23:05:55,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2021-12-06 23:05:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 23:05:55,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:55,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:55,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:05:55,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:55,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2020822092, now seen corresponding path program 1 times [2021-12-06 23:05:55,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973838164] [2021-12-06 23:05:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:55,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:55,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:55,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973838164] [2021-12-06 23:05:55,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973838164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:55,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:55,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:05:55,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605314298] [2021-12-06 23:05:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:55,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:55,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:55,586 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-12-06 23:05:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:55,633 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-12-06 23:05:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 22 [2021-12-06 23:05:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:55,635 INFO L225 Difference]: With dead ends: 105 [2021-12-06 23:05:55,635 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 23:05:55,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:55,636 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:55,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 72 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 23:05:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-06 23:05:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.696969696969697) internal successors, (112), 104 states have internal predecessors, (112), 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) [2021-12-06 23:05:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2021-12-06 23:05:55,639 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 22 [2021-12-06 23:05:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:55,640 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2021-12-06 23:05:55,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2021-12-06 23:05:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2021-12-06 23:05:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:05:55,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:55,641 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:55,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:05:55,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2021-12-06 23:05:55,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:55,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896467465] [2021-12-06 23:05:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:55,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:55,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:55,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896467465] [2021-12-06 23:05:55,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896467465] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:55,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340940223] [2021-12-06 23:05:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:55,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:55,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:55,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:05:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:05:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:55,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:55,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:55,875 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:05:55,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:55,902 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:05:55,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:05:55,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:05:55,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340940223] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:55,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:55,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 8 [2021-12-06 23:05:55,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395860904] [2021-12-06 23:05:55,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:55,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:05:55,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:05:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:05:55,989 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:56,052 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2021-12-06 23:05:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:05:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:56,053 INFO L225 Difference]: With dead ends: 110 [2021-12-06 23:05:56,053 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 23:05:56,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:05:56,054 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 257 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:56,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 152 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2021-12-06 23:05:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 23:05:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2021-12-06 23:05:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 97 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2021-12-06 23:05:56,058 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 27 [2021-12-06 23:05:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:56,058 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2021-12-06 23:05:56,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2021-12-06 23:05:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:05:56,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:56,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:56,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:05:56,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 23:05:56,261 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:56,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2021-12-06 23:05:56,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:56,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443272504] [2021-12-06 23:05:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:56,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:05:56,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:56,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443272504] [2021-12-06 23:05:56,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443272504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:56,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769819048] [2021-12-06 23:05:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:56,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:56,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:05:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:56,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 23:05:56,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:56,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:56,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:56,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:56,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:56,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:56,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:05:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:56,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:05:56,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769819048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:56,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:05:56,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-06 23:05:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608021460] [2021-12-06 23:05:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:56,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:56,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:05:56,723 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:56,777 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2021-12-06 23:05:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:05:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:56,778 INFO L225 Difference]: With dead ends: 91 [2021-12-06 23:05:56,778 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 23:05:56,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:05:56,779 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:56,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 59 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 23:05:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-12-06 23:05:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 90 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) [2021-12-06 23:05:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-12-06 23:05:56,782 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 27 [2021-12-06 23:05:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:56,782 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-12-06 23:05:56,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-12-06 23:05:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:05:56,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:56,784 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:56,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:05:56,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:56,984 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1248708524, now seen corresponding path program 1 times [2021-12-06 23:05:56,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:56,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902268803] [2021-12-06 23:05:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:56,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:05:57,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902268803] [2021-12-06 23:05:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902268803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 23:05:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915698492] [2021-12-06 23:05:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:05:57,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:05:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:57,091 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,310 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2021-12-06 23:05:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:05:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 23:05:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,312 INFO L225 Difference]: With dead ends: 161 [2021-12-06 23:05:57,312 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 23:05:57,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:57,313 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 526 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 184 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:05:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 23:05:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 99. [2021-12-06 23:05:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 98 states have internal predecessors, (117), 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) [2021-12-06 23:05:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2021-12-06 23:05:57,317 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 30 [2021-12-06 23:05:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,317 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2021-12-06 23:05:57,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2021-12-06 23:05:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:05:57,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:05:57,318 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1248708523, now seen corresponding path program 1 times [2021-12-06 23:05:57,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484651654] [2021-12-06 23:05:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:57,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484651654] [2021-12-06 23:05:57,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484651654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:05:57,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672415694] [2021-12-06 23:05:57,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:05:57,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:05:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:05:57,455 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,697 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2021-12-06 23:05:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:05:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 23:05:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,698 INFO L225 Difference]: With dead ends: 150 [2021-12-06 23:05:57,698 INFO L226 Difference]: Without dead ends: 150 [2021-12-06 23:05:57,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:05:57,699 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 491 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 187 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:05:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-06 23:05:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 99. [2021-12-06 23:05:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.554054054054054) internal successors, (115), 98 states have internal predecessors, (115), 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) [2021-12-06 23:05:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-12-06 23:05:57,701 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 30 [2021-12-06 23:05:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,702 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-12-06 23:05:57,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-12-06 23:05:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:05:57,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:05:57,703 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -55260162, now seen corresponding path program 1 times [2021-12-06 23:05:57,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680472095] [2021-12-06 23:05:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:57,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680472095] [2021-12-06 23:05:57,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680472095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:05:57,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031492783] [2021-12-06 23:05:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:05:57,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:05:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:57,735 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,744 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2021-12-06 23:05:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:05:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 23:05:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,745 INFO L225 Difference]: With dead ends: 125 [2021-12-06 23:05:57,745 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 23:05:57,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:05:57,746 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 156 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 23:05:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 94. [2021-12-06 23:05:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 93 states have internal predecessors, (102), 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) [2021-12-06 23:05:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2021-12-06 23:05:57,749 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 31 [2021-12-06 23:05:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,749 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2021-12-06 23:05:57,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2021-12-06 23:05:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:05:57,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:05:57,750 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1713045098, now seen corresponding path program 1 times [2021-12-06 23:05:57,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022076233] [2021-12-06 23:05:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:57,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022076233] [2021-12-06 23:05:57,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022076233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:05:57,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148913086] [2021-12-06 23:05:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:57,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:57,787 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,844 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2021-12-06 23:05:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 23:05:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,845 INFO L225 Difference]: With dead ends: 103 [2021-12-06 23:05:57,845 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 23:05:57,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:05:57,846 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 194 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 94 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 23:05:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-12-06 23:05:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.434782608695652) internal successors, (99), 90 states have internal predecessors, (99), 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) [2021-12-06 23:05:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-12-06 23:05:57,848 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 32 [2021-12-06 23:05:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,848 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-12-06 23:05:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-12-06 23:05:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:05:57,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:05:57,849 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1713045097, now seen corresponding path program 1 times [2021-12-06 23:05:57,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035459678] [2021-12-06 23:05:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:57,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035459678] [2021-12-06 23:05:57,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035459678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:05:57,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043278413] [2021-12-06 23:05:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:57,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:05:57,886 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,897 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-12-06 23:05:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:05:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 23:05:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,898 INFO L225 Difference]: With dead ends: 90 [2021-12-06 23:05:57,898 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 23:05:57,898 INFO L932 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 [2021-12-06 23:05:57,899 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 79 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 155 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 23:05:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-12-06 23:05:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 89 states have internal predecessors, (97), 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) [2021-12-06 23:05:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2021-12-06 23:05:57,901 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 32 [2021-12-06 23:05:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,901 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2021-12-06 23:05:57,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2021-12-06 23:05:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:05:57,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:05:57,902 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1563834333, now seen corresponding path program 1 times [2021-12-06 23:05:57,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709356140] [2021-12-06 23:05:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:57,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709356140] [2021-12-06 23:05:57,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709356140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:57,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:57,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:05:57,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045074733] [2021-12-06 23:05:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:57,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:57,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:57,954 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-12-06 23:05:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:57,964 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-12-06 23:05:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 33 [2021-12-06 23:05:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:57,965 INFO L225 Difference]: With dead ends: 87 [2021-12-06 23:05:57,965 INFO L226 Difference]: Without dead ends: 87 [2021-12-06 23:05:57,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:05:57,965 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 133 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:57,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 116 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-06 23:05:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-12-06 23:05:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 86 states have internal predecessors, (93), 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) [2021-12-06 23:05:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-12-06 23:05:57,969 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 33 [2021-12-06 23:05:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:57,969 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-12-06 23:05:57,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-12-06 23:05:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-12-06 23:05:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:05:57,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:57,970 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:57,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:05:57,970 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1234225649, now seen corresponding path program 1 times [2021-12-06 23:05:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:57,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803656632] [2021-12-06 23:05:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:57,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:58,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:58,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803656632] [2021-12-06 23:05:58,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803656632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:58,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:05:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665882379] [2021-12-06 23:05:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:58,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:58,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:05:58,017 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:58,082 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2021-12-06 23:05:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 23:05:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:58,083 INFO L225 Difference]: With dead ends: 127 [2021-12-06 23:05:58,083 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 23:05:58,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:58,084 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 86 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:58,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 134 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 23:05:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 86. [2021-12-06 23:05:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 67 states have (on average 1.373134328358209) internal successors, (92), 85 states have internal predecessors, (92), 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) [2021-12-06 23:05:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-12-06 23:05:58,087 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 34 [2021-12-06 23:05:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:58,087 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-12-06 23:05:58,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-12-06 23:05:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:05:58,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:58,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:58,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:05:58,088 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1234225648, now seen corresponding path program 1 times [2021-12-06 23:05:58,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:58,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567668210] [2021-12-06 23:05:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:58,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:58,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:58,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567668210] [2021-12-06 23:05:58,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567668210] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:58,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824548283] [2021-12-06 23:05:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:58,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:58,197 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:58,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:05:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:58,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:05:58,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:58,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 23:05:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:05:58,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:05:58,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824548283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:58,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:05:58,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-12-06 23:05:58,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913986271] [2021-12-06 23:05:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:58,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:58,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:05:58,354 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:58,415 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-12-06 23:05:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:58,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 23:05:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:58,416 INFO L225 Difference]: With dead ends: 85 [2021-12-06 23:05:58,416 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 23:05:58,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:05:58,417 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 58 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:58,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 117 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 23:05:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-06 23:05:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 84 states have internal predecessors, (91), 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) [2021-12-06 23:05:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-12-06 23:05:58,420 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 34 [2021-12-06 23:05:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:58,421 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-12-06 23:05:58,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-12-06 23:05:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 23:05:58,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:58,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:58,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:05:58,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:58,622 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 393710610, now seen corresponding path program 1 times [2021-12-06 23:05:58,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:58,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572347115] [2021-12-06 23:05:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:58,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:05:58,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:58,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572347115] [2021-12-06 23:05:58,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572347115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:58,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:58,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:05:58,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040924301] [2021-12-06 23:05:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:58,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:58,700 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:58,762 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2021-12-06 23:05:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 23:05:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:58,763 INFO L225 Difference]: With dead ends: 82 [2021-12-06 23:05:58,763 INFO L226 Difference]: Without dead ends: 82 [2021-12-06 23:05:58,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:05:58,764 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 178 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:58,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 71 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-06 23:05:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-12-06 23:05:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 81 states have internal predecessors, (88), 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) [2021-12-06 23:05:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-12-06 23:05:58,767 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 35 [2021-12-06 23:05:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:58,768 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-12-06 23:05:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-12-06 23:05:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 23:05:58,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:58,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:58,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 23:05:58,769 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 49 more)] === [2021-12-06 23:05:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash -522865965, now seen corresponding path program 1 times [2021-12-06 23:05:58,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:58,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148850889] [2021-12-06 23:05:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:58,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:59,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:59,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148850889] [2021-12-06 23:05:59,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148850889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:59,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956475857] [2021-12-06 23:05:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:59,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:59,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:59,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceee7495-a29c-455b-b603-aac10d631b02/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:05:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 23:05:59,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:59,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:05:59,299 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:05:59,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 23:05:59,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:05:59,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:05:59,435 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:05:59,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-06 23:05:59,586 INFO L354 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2021-12-06 23:05:59,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 57 [2021-12-06 23:05:59,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,648 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 23:05:59,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2021-12-06 23:05:59,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:59,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,676 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 23:05:59,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2021-12-06 23:05:59,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:59,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,703 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 23:05:59,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2021-12-06 23:05:59,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:59,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:59,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:05:59,943 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:59,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 29 [2021-12-06 23:06:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:00,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:00,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2021-12-06 23:06:00,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 23:06:02,605 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-12-06 23:06:02,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 101 [2021-12-06 23:06:02,862 INFO L354 Elim1Store]: treesize reduction 282, result has 44.3 percent of original size [2021-12-06 23:06:02,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 2122 treesize of output 2085 [2021-12-06 23:06:02,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:02,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2085 treesize of output 1961 [2021-12-06 23:06:02,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:02,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1961 treesize of output 1905