./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-1.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_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/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_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/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_74acab77-19c1-490e-9aed-a36aba85ef5d/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 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:56:55,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:56:55,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:56:55,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:56:55,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:56:55,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:56:55,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:56:55,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:56:55,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:56:55,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:56:55,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:56:55,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:56:55,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:56:55,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:56:55,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:56:55,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:56:55,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:56:55,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:56:55,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:56:55,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:56:55,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:56:55,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:56:55,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:56:55,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:56:55,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:56:55,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:56:55,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:56:55,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:56:55,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:56:55,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:56:55,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:56:55,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:56:55,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:56:55,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:56:55,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:56:55,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:56:55,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:56:55,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:56:55,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:56:55,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:56:55,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:56:55,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:56:55,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:56:55,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:56:55,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:56:55,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:56:55,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:56:55,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:56:55,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:56:55,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:56:55,265 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:56:55,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:56:55,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:56:55,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:56:55,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:56:55,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:56:55,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:56:55,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:56:55,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:56:55,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:56:55,268 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_74acab77-19c1-490e-9aed-a36aba85ef5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 [2021-12-06 23:56:55,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:56:55,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:56:55,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:56:55,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:56:55,469 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:56:55,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/alternating_list-1.i [2021-12-06 23:56:55,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/data/c250da7ef/a25cae60164649c59a46062d8f303b2c/FLAGa3afa2c6e [2021-12-06 23:56:55,946 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:56:55,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/sv-benchmarks/c/list-properties/alternating_list-1.i [2021-12-06 23:56:55,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/data/c250da7ef/a25cae60164649c59a46062d8f303b2c/FLAGa3afa2c6e [2021-12-06 23:56:55,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/data/c250da7ef/a25cae60164649c59a46062d8f303b2c [2021-12-06 23:56:55,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:56:55,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:56:55,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:56:55,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:56:55,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:56:55,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:55" (1/1) ... [2021-12-06 23:56:55,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1ec62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:55, skipping insertion in model container [2021-12-06 23:56:55,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:55" (1/1) ... [2021-12-06 23:56:55,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:56:56,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:56:56,228 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_74acab77-19c1-490e-9aed-a36aba85ef5d/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2021-12-06 23:56:56,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:56:56,238 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:56:56,275 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_74acab77-19c1-490e-9aed-a36aba85ef5d/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2021-12-06 23:56:56,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:56:56,301 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:56:56,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56 WrapperNode [2021-12-06 23:56:56,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:56:56,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:56:56,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:56:56,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:56:56,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,345 INFO L137 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 91 [2021-12-06 23:56:56,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:56:56,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:56:56,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:56:56,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:56:56,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:56:56,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:56:56,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:56:56,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:56:56,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (1/1) ... [2021-12-06 23:56:56,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:56:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:56,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:56:56,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:56:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-06 23:56:56,447 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:56:56,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:56:56,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:56:56,523 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:56:56,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:56:56,543 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-06 23:56:56,701 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:56:56,707 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:56:56,707 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 23:56:56,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:56:56 BoogieIcfgContainer [2021-12-06 23:56:56,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:56:56,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:56:56,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:56:56,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:56:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:56:55" (1/3) ... [2021-12-06 23:56:56,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b38622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:56:56, skipping insertion in model container [2021-12-06 23:56:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:56" (2/3) ... [2021-12-06 23:56:56,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b38622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:56:56, skipping insertion in model container [2021-12-06 23:56:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:56:56" (3/3) ... [2021-12-06 23:56:56,717 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2021-12-06 23:56:56,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:56:56,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-12-06 23:56:56,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:56:56,767 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 23:56:56,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-12-06 23:56:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 74 states have internal predecessors, (85), 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 23:56:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:56:56,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:56,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:56:56,784 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517576, now seen corresponding path program 1 times [2021-12-06 23:56:56,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:56,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753754715] [2021-12-06 23:56:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:56,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:56,895 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 23:56:56,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:56,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753754715] [2021-12-06 23:56:56,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753754715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:56,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:56,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:56:56,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039148858] [2021-12-06 23:56:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:56,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:56:56,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:56:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:56:56,923 INFO L87 Difference]: Start difference. First operand has 76 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 74 states have internal predecessors, (85), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 23:56:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:56,937 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-12-06 23:56:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:56:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-06 23:56:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:56,944 INFO L225 Difference]: With dead ends: 76 [2021-12-06 23:56:56,944 INFO L226 Difference]: Without dead ends: 70 [2021-12-06 23:56:56,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:56:56,948 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:56,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:56:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-06 23:56:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-06 23:56:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.875) internal successors, (75), 69 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:56:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-12-06 23:56:56,978 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 6 [2021-12-06 23:56:56,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:56,978 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-12-06 23:56:56,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 23:56:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-12-06 23:56:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:56:56,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:56,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:56,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:56:56,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238131, now seen corresponding path program 1 times [2021-12-06 23:56:56,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:56,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742976274] [2021-12-06 23:56:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:56,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,039 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 23:56:57,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742976274] [2021-12-06 23:56:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742976274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:57,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468686457] [2021-12-06 23:56:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:56:57,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:56:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:56:57,042 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,157 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-12-06 23:56:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:56:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,159 INFO L225 Difference]: With dead ends: 91 [2021-12-06 23:56:57,160 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 23:56:57,160 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 23:56:57,162 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 122 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 49 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 23:56:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-12-06 23:56:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 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 23:56:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-12-06 23:56:57,172 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 7 [2021-12-06 23:56:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,172 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-12-06 23:56:57,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-12-06 23:56:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:56:57,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:56:57,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238132, now seen corresponding path program 1 times [2021-12-06 23:56:57,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715890378] [2021-12-06 23:56:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,229 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 23:56:57,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715890378] [2021-12-06 23:56:57,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715890378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:57,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686231201] [2021-12-06 23:56:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:56:57,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:56:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:56:57,231 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,312 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2021-12-06 23:56:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:56:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,314 INFO L225 Difference]: With dead ends: 99 [2021-12-06 23:56:57,314 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 23:56:57,315 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 23:56:57,316 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 61 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 23:56:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2021-12-06 23:56:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.546875) internal successors, (99), 86 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 23:56:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-12-06 23:56:57,325 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 7 [2021-12-06 23:56:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,326 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-12-06 23:56:57,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 23:56:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-12-06 23:56:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:56:57,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:56:57,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1723954815, now seen corresponding path program 1 times [2021-12-06 23:56:57,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837968393] [2021-12-06 23:56:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,364 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 23:56:57,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837968393] [2021-12-06 23:56:57,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837968393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:57,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020042540] [2021-12-06 23:56:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:56:57,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:56:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:56:57,366 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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 23:56:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,374 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-12-06 23:56:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:56:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 14 [2021-12-06 23:56:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,375 INFO L225 Difference]: With dead ends: 136 [2021-12-06 23:56:57,375 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 23:56:57,375 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 23:56:57,376 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 51 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 134 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:56:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 23:56:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-12-06 23:56:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 95 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 23:56:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2021-12-06 23:56:57,382 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 14 [2021-12-06 23:56:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,383 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2021-12-06 23:56:57,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 23:56:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2021-12-06 23:56:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:56:57,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:56:57,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1723646985, now seen corresponding path program 1 times [2021-12-06 23:56:57,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129347584] [2021-12-06 23:56:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,425 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 23:56:57,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129347584] [2021-12-06 23:56:57,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129347584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:56:57,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252968284] [2021-12-06 23:56:57,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:56:57,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:56:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:56:57,427 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,512 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-12-06 23:56:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:56:57,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 23:56:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,513 INFO L225 Difference]: With dead ends: 141 [2021-12-06 23:56:57,513 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 23:56:57,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:56:57,514 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 78 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 202 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 23:56:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2021-12-06 23:56:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.513157894736842) 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 23:56:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-12-06 23:56:57,521 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 14 [2021-12-06 23:56:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,521 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-12-06 23:56:57,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-12-06 23:56:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 23:56:57,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:56:57,522 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1862079005, now seen corresponding path program 1 times [2021-12-06 23:56:57,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775672077] [2021-12-06 23:56:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,556 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 23:56:57,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775672077] [2021-12-06 23:56:57,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775672077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:57,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872863953] [2021-12-06 23:56:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:56:57,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:56:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:56:57,558 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,604 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-12-06 23:56:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:56:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 23:56:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,605 INFO L225 Difference]: With dead ends: 106 [2021-12-06 23:56:57,605 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 23:56:57,605 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 23:56:57,606 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 107 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:56:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 23:56:57,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2021-12-06 23:56:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 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 23:56:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-12-06 23:56:57,612 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 15 [2021-12-06 23:56:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-12-06 23:56:57,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-12-06 23:56:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:56:57,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:56:57,613 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1889920183, now seen corresponding path program 1 times [2021-12-06 23:56:57,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678912912] [2021-12-06 23:56:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,655 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 23:56:57,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678912912] [2021-12-06 23:56:57,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678912912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:56:57,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125358270] [2021-12-06 23:56:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:56:57,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:56:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:56:57,657 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 23:56:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,759 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2021-12-06 23:56:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:56:57,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:56:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,760 INFO L225 Difference]: With dead ends: 116 [2021-12-06 23:56:57,760 INFO L226 Difference]: Without dead ends: 116 [2021-12-06 23:56:57,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:56:57,761 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 44 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 242 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-06 23:56:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-12-06 23:56:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.4875) internal successors, (119), 102 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 23:56:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-12-06 23:56:57,767 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 16 [2021-12-06 23:56:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,767 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-12-06 23:56:57,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 23:56:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-12-06 23:56:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:56:57,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:56:57,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1543433373, now seen corresponding path program 1 times [2021-12-06 23:56:57,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620843733] [2021-12-06 23:56:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:57,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620843733] [2021-12-06 23:56:57,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620843733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:56:57,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348773062] [2021-12-06 23:56:57,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:56:57,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:56:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:56:57,833 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:57,919 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-12-06 23:56:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:56:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 23:56:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:57,920 INFO L225 Difference]: With dead ends: 110 [2021-12-06 23:56:57,921 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 23:56:57,921 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 23:56:57,922 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:57,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 162 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 23:56:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-06 23:56:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.5) internal successors, (114), 98 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 23:56:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2021-12-06 23:56:57,929 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 17 [2021-12-06 23:56:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:57,930 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2021-12-06 23:56:57,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2021-12-06 23:56:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:56:57,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:57,931 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:57,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:56:57,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1088042016, now seen corresponding path program 1 times [2021-12-06 23:56:57,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:57,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633432027] [2021-12-06 23:56:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:57,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:57,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633432027] [2021-12-06 23:56:57,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633432027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:57,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:57,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:56:57,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672092463] [2021-12-06 23:56:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:57,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:56:57,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:57,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:56:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:56:57,981 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:58,062 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2021-12-06 23:56:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:56:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 23:56:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:58,064 INFO L225 Difference]: With dead ends: 104 [2021-12-06 23:56:58,064 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 23:56:58,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:56:58,064 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 95 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:58,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 123 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 23:56:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-12-06 23:56:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 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 23:56:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-12-06 23:56:58,069 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 17 [2021-12-06 23:56:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:58,069 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-12-06 23:56:58,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-12-06 23:56:58,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:56:58,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:58,070 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:58,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:56:58,070 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1088042017, now seen corresponding path program 1 times [2021-12-06 23:56:58,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:58,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056083552] [2021-12-06 23:56:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:58,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:58,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056083552] [2021-12-06 23:56:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056083552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:58,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:58,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:56:58,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962802078] [2021-12-06 23:56:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:58,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:56:58,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:56:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:56:58,126 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:58,229 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2021-12-06 23:56:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:56:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 23:56:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:58,230 INFO L225 Difference]: With dead ends: 92 [2021-12-06 23:56:58,230 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 23:56:58,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:56:58,231 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 65 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:58,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 144 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:56:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 23:56:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2021-12-06 23:56:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 83 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 23:56:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2021-12-06 23:56:58,234 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 17 [2021-12-06 23:56:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2021-12-06 23:56:58,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2021-12-06 23:56:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:56:58,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:58,235 INFO L514 BasicCegarLoop]: trace histogram [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 23:56:58,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:56:58,235 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1458314748, now seen corresponding path program 1 times [2021-12-06 23:56:58,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:58,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836778475] [2021-12-06 23:56:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:58,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:58,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836778475] [2021-12-06 23:56:58,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836778475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:58,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272418277] [2021-12-06 23:56:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:58,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:58,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:58,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:56:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:58,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 23:56:58,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:58,497 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:56:58,560 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:56:58,560 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 23:56:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:56:58,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-12-06 23:56:58,615 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 23:56:58,643 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 20 treesize of output 8 [2021-12-06 23:56:58,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:56:58,740 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 23:56:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:58,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:58,765 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:56:58,778 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:56:58,785 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:56:58,794 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array Int Int)) (v_ArrVal_129 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_129)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:56:58,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:56:58,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:56:58,876 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2021-12-06 23:56:58,887 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 23:56:58,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-06 23:56:58,894 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 9 treesize of output 7 [2021-12-06 23:56:58,901 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:56:58,902 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 13 treesize of output 12 [2021-12-06 23:56:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 23:56:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272418277] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:58,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:58,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 28 [2021-12-06 23:56:58,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007314957] [2021-12-06 23:56:58,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:58,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 23:56:58,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 23:56:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=450, Unknown=4, NotChecked=188, Total=756 [2021-12-06 23:56:58,954 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 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 23:56:59,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:59,519 INFO L93 Difference]: Finished difference Result 384 states and 409 transitions. [2021-12-06 23:56:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 23:56:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 23:56:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:59,522 INFO L225 Difference]: With dead ends: 384 [2021-12-06 23:56:59,523 INFO L226 Difference]: Without dead ends: 384 [2021-12-06 23:56:59,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1315, Unknown=4, NotChecked=324, Total=1980 [2021-12-06 23:56:59,525 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 521 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:59,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 783 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 673 Invalid, 0 Unknown, 774 Unchecked, 0.3s Time] [2021-12-06 23:56:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-06 23:56:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 101. [2021-12-06 23:56:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 86 states have (on average 1.3488372093023255) internal successors, (116), 100 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 23:56:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2021-12-06 23:56:59,531 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 24 [2021-12-06 23:56:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:59,532 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2021-12-06 23:56:59,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 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 23:56:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2021-12-06 23:56:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 23:56:59,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:59,533 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:56:59,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:56:59,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:59,735 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:56:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1281158610, now seen corresponding path program 1 times [2021-12-06 23:56:59,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73329813] [2021-12-06 23:56:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:59,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:59,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73329813] [2021-12-06 23:56:59,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73329813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:59,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691726996] [2021-12-06 23:56:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:59,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:00,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:00,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:57:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:00,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 23:57:00,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:00,128 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:57:00,128 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 23:57:00,175 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 23:57:00,323 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:00,323 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 23:57:00,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:00,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-06 23:57:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:00,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:00,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:00,781 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 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-06 23:57:00,788 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:00,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-12-06 23:57:00,792 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 13 treesize of output 9 [2021-12-06 23:57:01,465 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-12-06 23:57:01,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-12-06 23:57:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:01,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691726996] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:01,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:01,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2021-12-06 23:57:01,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415646314] [2021-12-06 23:57:01,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:01,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 23:57:01,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 23:57:01,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1017, Unknown=10, NotChecked=0, Total=1190 [2021-12-06 23:57:01,606 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 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 23:57:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:01,765 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-12-06 23:57:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:57:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 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 26 [2021-12-06 23:57:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:01,766 INFO L225 Difference]: With dead ends: 108 [2021-12-06 23:57:01,766 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 23:57:01,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=1167, Unknown=10, NotChecked=0, Total=1406 [2021-12-06 23:57:01,768 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 67 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:01,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 566 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 248 Unchecked, 0.1s Time] [2021-12-06 23:57:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 23:57:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2021-12-06 23:57:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.348314606741573) internal successors, (120), 103 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 23:57:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-12-06 23:57:01,772 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 26 [2021-12-06 23:57:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:01,772 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-12-06 23:57:01,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 0 states have call successors, (0), 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 23:57:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-12-06 23:57:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 23:57:01,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:01,774 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:57:01,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:57:01,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:01,975 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1281158611, now seen corresponding path program 1 times [2021-12-06 23:57:01,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:01,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250026913] [2021-12-06 23:57:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:01,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:02,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:02,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250026913] [2021-12-06 23:57:02,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250026913] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:02,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245332337] [2021-12-06 23:57:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:02,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:02,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:02,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:57:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:57:02,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:02,263 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 23:57:02,271 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:02,271 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 23:57:02,318 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:02,321 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 23:57:02,458 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:02,459 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 46 treesize of output 45 [2021-12-06 23:57:02,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 24 [2021-12-06 23:57:02,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:02,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:57:02,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:02,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:02,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2021-12-06 23:57:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:02,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:03,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:03,146 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 1 case distinctions, treesize of input 68 treesize of output 59 [2021-12-06 23:57:03,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:03,150 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 1 case distinctions, treesize of input 59 treesize of output 59 [2021-12-06 23:57:03,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:03,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 89 [2021-12-06 23:57:03,162 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:03,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 134 [2021-12-06 23:57:03,168 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 95 treesize of output 87 [2021-12-06 23:57:03,172 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 87 treesize of output 79 [2021-12-06 23:57:03,176 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 79 treesize of output 75 [2021-12-06 23:57:03,477 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:03,477 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 13 treesize of output 12 [2021-12-06 23:57:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:03,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245332337] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:03,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:03,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2021-12-06 23:57:03,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228351863] [2021-12-06 23:57:03,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:03,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 23:57:03,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 23:57:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1152, Unknown=16, NotChecked=0, Total=1332 [2021-12-06 23:57:03,576 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 37 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:57:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:04,025 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2021-12-06 23:57:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:57:04,026 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 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 26 [2021-12-06 23:57:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:04,026 INFO L225 Difference]: With dead ends: 126 [2021-12-06 23:57:04,026 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 23:57:04,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=1676, Unknown=16, NotChecked=0, Total=1980 [2021-12-06 23:57:04,028 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 95 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:04,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 615 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 416 Invalid, 0 Unknown, 242 Unchecked, 0.1s Time] [2021-12-06 23:57:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 23:57:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-12-06 23:57:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.351063829787234) internal successors, (127), 108 states have internal predecessors, (127), 0 states have call successors, (0), 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 23:57:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2021-12-06 23:57:04,037 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 26 [2021-12-06 23:57:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:04,038 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2021-12-06 23:57:04,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:57:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2021-12-06 23:57:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:57:04,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:04,039 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:57:04,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:57:04,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:04,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash 978686096, now seen corresponding path program 1 times [2021-12-06 23:57:04,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:04,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278312499] [2021-12-06 23:57:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:04,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:04,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:04,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278312499] [2021-12-06 23:57:04,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278312499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277814289] [2021-12-06 23:57:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:04,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:04,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:04,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:57:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:04,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 23:57:04,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:04,484 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:57:04,523 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:04,523 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 23:57:04,549 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 23:57:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:57:04,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-12-06 23:57:04,574 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 20 treesize of output 8 [2021-12-06 23:57:04,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:04,632 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 23:57:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:04,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:04,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_282 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_282) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:04,689 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_282 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_282) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:04,692 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_282 (Array Int Int))) (< (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_282) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:04,697 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_278 Int) (v_ArrVal_282 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_278)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_282) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:04,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:04,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:04,746 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2021-12-06 23:57:04,752 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 23:57:04,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:57:04,755 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 9 treesize of output 7 [2021-12-06 23:57:04,760 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:04,760 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 13 treesize of output 12 [2021-12-06 23:57:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-06 23:57:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277814289] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:04,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2021-12-06 23:57:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239269225] [2021-12-06 23:57:04,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:04,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 23:57:04,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 23:57:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=745, Unknown=4, NotChecked=236, Total=1122 [2021-12-06 23:57:04,793 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:57:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:05,522 INFO L93 Difference]: Finished difference Result 269 states and 288 transitions. [2021-12-06 23:57:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 23:57:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:57:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:05,524 INFO L225 Difference]: With dead ends: 269 [2021-12-06 23:57:05,524 INFO L226 Difference]: Without dead ends: 269 [2021-12-06 23:57:05,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=584, Invalid=2508, Unknown=4, NotChecked=444, Total=3540 [2021-12-06 23:57:05,526 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 532 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:05,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 1011 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 932 Invalid, 0 Unknown, 755 Unchecked, 0.3s Time] [2021-12-06 23:57:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-06 23:57:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 129. [2021-12-06 23:57:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 128 states have internal predecessors, (160), 0 states have call successors, (0), 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 23:57:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2021-12-06 23:57:05,529 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 27 [2021-12-06 23:57:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:05,529 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2021-12-06 23:57:05,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 23:57:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2021-12-06 23:57:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:57:05,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:05,530 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:57:05,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:57:05,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:57:05,732 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -494851387, now seen corresponding path program 1 times [2021-12-06 23:57:05,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:05,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936543435] [2021-12-06 23:57:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:05,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:05,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:05,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936543435] [2021-12-06 23:57:05,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936543435] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:05,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888417492] [2021-12-06 23:57:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:05,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:05,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:05,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:05,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:57:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 23:57:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:06,020 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:06,020 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 23:57:06,037 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:06,041 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 23:57:06,077 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:06,077 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 52 treesize of output 49 [2021-12-06 23:57:06,080 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 23 treesize of output 15 [2021-12-06 23:57:06,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 28 [2021-12-06 23:57:06,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:06,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2021-12-06 23:57:06,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:06,160 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:06,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 18 [2021-12-06 23:57:06,166 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 23:57:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:06,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:06,242 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 79 treesize of output 57 [2021-12-06 23:57:06,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:06,496 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 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-06 23:57:06,499 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:06,500 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 1 case distinctions, treesize of input 46 treesize of output 46 [2021-12-06 23:57:06,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:06,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 63 [2021-12-06 23:57:06,514 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:06,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 80 [2021-12-06 23:57:06,519 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 41 treesize of output 37 [2021-12-06 23:57:06,523 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 37 treesize of output 33 [2021-12-06 23:57:06,700 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:06,700 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 13 treesize of output 12 [2021-12-06 23:57:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:06,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888417492] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:06,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:06,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-12-06 23:57:06,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069753962] [2021-12-06 23:57:06,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:06,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 23:57:06,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 23:57:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=750, Unknown=12, NotChecked=0, Total=870 [2021-12-06 23:57:06,779 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:07,271 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2021-12-06 23:57:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:57:07,272 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 23:57:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:07,273 INFO L225 Difference]: With dead ends: 170 [2021-12-06 23:57:07,273 INFO L226 Difference]: Without dead ends: 170 [2021-12-06 23:57:07,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=1660, Unknown=12, NotChecked=0, Total=1980 [2021-12-06 23:57:07,274 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 394 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:07,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 608 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 531 Invalid, 0 Unknown, 270 Unchecked, 0.2s Time] [2021-12-06 23:57:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-06 23:57:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 108. [2021-12-06 23:57:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 107 states have internal predecessors, (122), 0 states have call successors, (0), 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 23:57:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2021-12-06 23:57:07,276 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 31 [2021-12-06 23:57:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:07,277 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2021-12-06 23:57:07,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2021-12-06 23:57:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:57:07,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:07,277 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-12-06 23:57:07,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:57:07,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 23:57:07,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash -79061123, now seen corresponding path program 1 times [2021-12-06 23:57:07,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727367566] [2021-12-06 23:57:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:07,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:57:07,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:07,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727367566] [2021-12-06 23:57:07,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727367566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:07,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:07,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:57:07,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033770010] [2021-12-06 23:57:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:07,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:57:07,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:57:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:57:07,531 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 23:57:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:07,575 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-12-06 23:57:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:57:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 23:57:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:07,576 INFO L225 Difference]: With dead ends: 116 [2021-12-06 23:57:07,577 INFO L226 Difference]: Without dead ends: 116 [2021-12-06 23:57:07,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:07,577 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 85 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:07,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 118 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-06 23:57:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2021-12-06 23:57:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.305263157894737) internal successors, (124), 109 states have internal predecessors, (124), 0 states have call successors, (0), 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 23:57:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-12-06 23:57:07,581 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 33 [2021-12-06 23:57:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:07,581 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-12-06 23:57:07,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 23:57:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-12-06 23:57:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:57:07,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:07,582 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-12-06 23:57:07,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:57:07,583 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1844072636, now seen corresponding path program 1 times [2021-12-06 23:57:07,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:07,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364215582] [2021-12-06 23:57:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:07,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:57:07,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:07,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364215582] [2021-12-06 23:57:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364215582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:07,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:07,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:57:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718015172] [2021-12-06 23:57:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:07,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:57:07,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:57:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:57:07,617 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:57:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:07,669 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2021-12-06 23:57:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:57:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:57:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:07,670 INFO L225 Difference]: With dead ends: 117 [2021-12-06 23:57:07,670 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 23:57:07,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:07,671 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 84 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:07,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 103 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 23:57:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2021-12-06 23:57:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 110 states have internal predecessors, (125), 0 states have call successors, (0), 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 23:57:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-12-06 23:57:07,675 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 34 [2021-12-06 23:57:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:07,675 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-12-06 23:57:07,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:57:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-12-06 23:57:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:57:07,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:07,676 INFO L514 BasicCegarLoop]: trace histogram [3, 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 23:57:07,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:57:07,676 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1201170391, now seen corresponding path program 1 times [2021-12-06 23:57:07,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:07,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303843665] [2021-12-06 23:57:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:07,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:07,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:07,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303843665] [2021-12-06 23:57:07,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303843665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:07,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931212680] [2021-12-06 23:57:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:07,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:07,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:07,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:57:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:07,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 23:57:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:07,926 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:57:07,954 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:07,955 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 23:57:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:57:07,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-12-06 23:57:07,996 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 23:57:08,020 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 20 treesize of output 8 [2021-12-06 23:57:08,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:08,084 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:08,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 23:57:08,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 23:57:08,114 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 14 treesize of output 16 [2021-12-06 23:57:08,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2021-12-06 23:57:08,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:08,203 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 23:57:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:08,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:08,214 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:57:08,220 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:57:08,223 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:57:08,227 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int)) (v_ArrVal_460 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_460) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-06 23:57:08,265 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int)) (v_ArrVal_460 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_20| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_460) |v_ULTIMATE.start_main_~t~0#1.base_20| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_20|) 0)))) is different from false [2021-12-06 23:57:08,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array Int Int)) (v_ArrVal_460 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_20| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_20|) 0)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_460) |v_ULTIMATE.start_main_~t~0#1.base_20| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-06 23:57:08,321 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:08,321 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 13 treesize of output 12 [2021-12-06 23:57:08,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_454 Int) (v_ArrVal_461 (Array Int Int)) (v_ArrVal_460 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_20| Int)) (or (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_454)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_460) |v_ULTIMATE.start_main_~t~0#1.base_20| v_ArrVal_461) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |v_ULTIMATE.start_main_~t~0#1.base_20| |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-12-06 23:57:08,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:08,407 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:08,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2021-12-06 23:57:08,414 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 23:57:08,415 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2021-12-06 23:57:08,418 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 48 treesize of output 44 [2021-12-06 23:57:08,421 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 22 treesize of output 20 [2021-12-06 23:57:08,427 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:08,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 23:57:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-12-06 23:57:08,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931212680] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:08,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:08,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2021-12-06 23:57:08,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885622019] [2021-12-06 23:57:08,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:08,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:57:08,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:57:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=957, Unknown=11, NotChecked=490, Total=1640 [2021-12-06 23:57:08,481 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 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 23:57:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:09,137 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2021-12-06 23:57:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:57:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 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) Word has length 34 [2021-12-06 23:57:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:09,138 INFO L225 Difference]: With dead ends: 161 [2021-12-06 23:57:09,138 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 23:57:09,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=523, Invalid=2356, Unknown=11, NotChecked=770, Total=3660 [2021-12-06 23:57:09,140 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 247 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 961 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:09,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 729 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 905 Invalid, 0 Unknown, 961 Unchecked, 0.3s Time] [2021-12-06 23:57:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 23:57:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2021-12-06 23:57:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 110 states have internal predecessors, (124), 0 states have call successors, (0), 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 23:57:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2021-12-06 23:57:09,142 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 34 [2021-12-06 23:57:09,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:09,143 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2021-12-06 23:57:09,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 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 23:57:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2021-12-06 23:57:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 23:57:09,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:09,143 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-12-06 23:57:09,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 23:57:09,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 23:57:09,345 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1331677023, now seen corresponding path program 1 times [2021-12-06 23:57:09,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:09,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197806954] [2021-12-06 23:57:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:09,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:09,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197806954] [2021-12-06 23:57:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197806954] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362891698] [2021-12-06 23:57:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:09,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:09,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:09,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:57:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:09,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:57:09,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:09,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:09,528 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:09,529 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 12 treesize of output 11 [2021-12-06 23:57:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:09,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362891698] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:09,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:09,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2021-12-06 23:57:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645709628] [2021-12-06 23:57:09,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:09,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:57:09,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:57:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:57:09,538 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:09,599 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2021-12-06 23:57:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:57:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 23:57:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:09,600 INFO L225 Difference]: With dead ends: 115 [2021-12-06 23:57:09,600 INFO L226 Difference]: Without dead ends: 115 [2021-12-06 23:57:09,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:57:09,601 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:09,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 113 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-06 23:57:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2021-12-06 23:57:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 96 states have (on average 1.28125) internal successors, (123), 109 states have internal predecessors, (123), 0 states have call successors, (0), 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 23:57:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2021-12-06 23:57:09,603 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 35 [2021-12-06 23:57:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:09,604 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2021-12-06 23:57:09,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2021-12-06 23:57:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:57:09,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:09,604 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:09,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:57:09,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:09,806 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1667685107, now seen corresponding path program 1 times [2021-12-06 23:57:09,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253079932] [2021-12-06 23:57:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:09,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:09,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253079932] [2021-12-06 23:57:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253079932] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487359078] [2021-12-06 23:57:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:09,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:09,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:09,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:57:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:10,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 23:57:10,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:10,115 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:57:10,115 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 23:57:10,156 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 23:57:10,269 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:10,270 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 23:57:10,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:10,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-06 23:57:10,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 23:57:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:10,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:10,596 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_555 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~a~0#1.base|))) (forall ((v_ArrVal_555 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1))) is different from false [2021-12-06 23:57:10,606 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_555 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~a~0#1.base|))) (forall ((v_ArrVal_555 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1))) is different from false [2021-12-06 23:57:10,612 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_555 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (forall ((v_ArrVal_555 (Array Int Int))) (= 1 (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_555) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))) is different from false [2021-12-06 23:57:10,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:10,617 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 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-06 23:57:10,621 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:10,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-12-06 23:57:10,623 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 13 treesize of output 9 [2021-12-06 23:57:10,643 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:10,644 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 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:57:10,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:10,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2021-12-06 23:57:10,649 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 22 treesize of output 18 [2021-12-06 23:57:10,763 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:10,763 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 13 treesize of output 12 [2021-12-06 23:57:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-12-06 23:57:10,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487359078] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:10,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:10,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 38 [2021-12-06 23:57:10,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098840893] [2021-12-06 23:57:10,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:10,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 23:57:10,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 23:57:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1085, Unknown=3, NotChecked=210, Total=1482 [2021-12-06 23:57:10,801 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 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 23:57:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:11,003 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2021-12-06 23:57:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:57:11,003 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:57:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:11,004 INFO L225 Difference]: With dead ends: 123 [2021-12-06 23:57:11,004 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 23:57:11,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1331, Unknown=3, NotChecked=234, Total=1806 [2021-12-06 23:57:11,006 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 46 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:11,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 385 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 207 Unchecked, 0.1s Time] [2021-12-06 23:57:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 23:57:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2021-12-06 23:57:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 102 states have (on average 1.2745098039215685) internal successors, (130), 115 states have internal predecessors, (130), 0 states have call successors, (0), 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 23:57:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-12-06 23:57:11,009 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 36 [2021-12-06 23:57:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:11,010 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-12-06 23:57:11,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.526315789473684) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 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 23:57:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-12-06 23:57:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:57:11,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:11,010 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:11,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:57:11,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:11,212 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1667685106, now seen corresponding path program 1 times [2021-12-06 23:57:11,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:11,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554053995] [2021-12-06 23:57:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:11,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:11,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:11,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554053995] [2021-12-06 23:57:11,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554053995] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:11,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536844611] [2021-12-06 23:57:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:11,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:11,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:11,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:11,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:57:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:11,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:57:11,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:11,475 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:11,475 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 23:57:11,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-06 23:57:11,514 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 23:57:11,518 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:11,640 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:11,641 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 46 treesize of output 45 [2021-12-06 23:57:11,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 24 [2021-12-06 23:57:11,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:11,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-06 23:57:11,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:11,832 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:57:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:11,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:11,936 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_608 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_609 (Array Int Int)) (v_ArrVal_608 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_609) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2021-12-06 23:57:11,951 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_608 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_609 (Array Int Int)) (v_ArrVal_608 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_609) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2021-12-06 23:57:11,958 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_608 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_609 (Array Int Int)) (v_ArrVal_608 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_608) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_609) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2021-12-06 23:57:11,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:11,965 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 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-06 23:57:11,968 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:11,968 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-12-06 23:57:11,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:11,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 65 [2021-12-06 23:57:11,980 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:11,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 93 [2021-12-06 23:57:11,984 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 74 treesize of output 66 [2021-12-06 23:57:11,988 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 28 [2021-12-06 23:57:12,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:12,048 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-06 23:57:12,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:57:12,052 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-06 23:57:12,122 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:12,123 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 13 treesize of output 12 [2021-12-06 23:57:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-12-06 23:57:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536844611] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:12,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:12,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2021-12-06 23:57:12,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455220171] [2021-12-06 23:57:12,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:12,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 23:57:12,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 23:57:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=591, Unknown=3, NotChecked=156, Total=870 [2021-12-06 23:57:12,159 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 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 23:57:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:12,544 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2021-12-06 23:57:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:57:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 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) Word has length 36 [2021-12-06 23:57:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:12,545 INFO L225 Difference]: With dead ends: 131 [2021-12-06 23:57:12,545 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 23:57:12,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=284, Invalid=1057, Unknown=3, NotChecked=216, Total=1560 [2021-12-06 23:57:12,546 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 152 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:12,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 426 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 331 Invalid, 0 Unknown, 297 Unchecked, 0.1s Time] [2021-12-06 23:57:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 23:57:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2021-12-06 23:57:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 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 23:57:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2021-12-06 23:57:12,549 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 36 [2021-12-06 23:57:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:12,549 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2021-12-06 23:57:12,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 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 23:57:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2021-12-06 23:57:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:57:12,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:12,550 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-06 23:57:12,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:57:12,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:12,751 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1021481151, now seen corresponding path program 1 times [2021-12-06 23:57:12,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:12,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944036865] [2021-12-06 23:57:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:12,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:13,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944036865] [2021-12-06 23:57:13,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944036865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878738951] [2021-12-06 23:57:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:13,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:13,058 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:13,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:57:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:13,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 23:57:13,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:13,202 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:57:13,202 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 23:57:13,247 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 23:57:13,376 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:13,377 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2021-12-06 23:57:13,403 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-06 23:57:13,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:57:13,456 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-12-06 23:57:13,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 43 treesize of output 30 [2021-12-06 23:57:13,624 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-06 23:57:13,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 67 [2021-12-06 23:57:13,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:13,795 INFO L354 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2021-12-06 23:57:13,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 27 [2021-12-06 23:57:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:13,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:13,832 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_688 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_688) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2021-12-06 23:57:13,910 INFO L354 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2021-12-06 23:57:13,910 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 31 treesize of output 30 [2021-12-06 23:57:13,913 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_688 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_688) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|)) is different from false [2021-12-06 23:57:13,966 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:13,967 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-12-06 23:57:14,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:14,094 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 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-06 23:57:14,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:14,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 89 [2021-12-06 23:57:14,104 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:14,105 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 80 treesize of output 68 [2021-12-06 23:57:14,108 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 50 treesize of output 42 [2021-12-06 23:57:14,336 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-06 23:57:14,336 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 22 treesize of output 22 [2021-12-06 23:57:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-06 23:57:14,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878738951] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:14,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:14,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2021-12-06 23:57:14,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162916262] [2021-12-06 23:57:14,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:14,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 23:57:14,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 23:57:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1510, Unknown=13, NotChecked=162, Total=1892 [2021-12-06 23:57:14,386 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:14,955 INFO L93 Difference]: Finished difference Result 195 states and 219 transitions. [2021-12-06 23:57:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:57:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:57:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:14,956 INFO L225 Difference]: With dead ends: 195 [2021-12-06 23:57:14,957 INFO L226 Difference]: Without dead ends: 195 [2021-12-06 23:57:14,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=440, Invalid=2632, Unknown=16, NotChecked=218, Total=3306 [2021-12-06 23:57:14,958 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 199 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:14,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 610 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 354 Invalid, 0 Unknown, 712 Unchecked, 0.1s Time] [2021-12-06 23:57:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-06 23:57:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 137. [2021-12-06 23:57:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 125 states have (on average 1.24) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 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 23:57:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-12-06 23:57:14,961 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 36 [2021-12-06 23:57:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:14,961 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-12-06 23:57:14,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-12-06 23:57:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:57:14,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:14,962 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-06 23:57:14,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:57:15,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 23:57:15,163 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1021481152, now seen corresponding path program 1 times [2021-12-06 23:57:15,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:15,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926754708] [2021-12-06 23:57:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:15,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:15,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926754708] [2021-12-06 23:57:15,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926754708] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941537024] [2021-12-06 23:57:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:15,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:15,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:15,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:57:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:15,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 23:57:15,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:15,547 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:15,547 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 23:57:15,567 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 23:57:15,570 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:15,666 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:15,666 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-06 23:57:15,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:57:15,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:15,708 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:15,709 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 23:57:15,748 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:57:15,748 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 23:57:15,760 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 23:57:15,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 29 treesize of output 24 [2021-12-06 23:57:15,900 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-06 23:57:15,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 65 [2021-12-06 23:57:15,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 23:57:15,908 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 20 treesize of output 12 [2021-12-06 23:57:15,977 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 25 treesize of output 13 [2021-12-06 23:57:15,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-12-06 23:57:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:15,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:16,069 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_770 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_770) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) (forall ((v_ArrVal_771 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-12-06 23:57:16,081 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_770 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_770) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) (forall ((v_ArrVal_771 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-12-06 23:57:16,087 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_771 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_771 (Array Int Int)) (v_ArrVal_770 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_770) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2021-12-06 23:57:16,095 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,095 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 62 treesize of output 66 [2021-12-06 23:57:16,127 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_768 (Array Int Int)) (v_ArrVal_771 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_768) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_770 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_770) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_prenex_2 (Array Int Int)) (v_prenex_3 (Array Int Int))) (<= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_2) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) is different from false [2021-12-06 23:57:16,223 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,223 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-12-06 23:57:16,233 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 32 treesize of output 24 [2021-12-06 23:57:16,243 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 22 [2021-12-06 23:57:16,255 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 32 treesize of output 24 [2021-12-06 23:57:16,264 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 22 [2021-12-06 23:57:16,284 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 32 treesize of output 24 [2021-12-06 23:57:16,290 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 22 [2021-12-06 23:57:16,358 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 32 treesize of output 24 [2021-12-06 23:57:16,368 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 22 [2021-12-06 23:57:16,388 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 32 treesize of output 24 [2021-12-06 23:57:16,394 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 22 [2021-12-06 23:57:16,412 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 32 treesize of output 24 [2021-12-06 23:57:16,422 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 22 [2021-12-06 23:57:16,442 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 32 treesize of output 24 [2021-12-06 23:57:16,448 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 22 [2021-12-06 23:57:16,466 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 32 treesize of output 24 [2021-12-06 23:57:16,476 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 22 [2021-12-06 23:57:16,496 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 32 treesize of output 24 [2021-12-06 23:57:16,502 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 22 [2021-12-06 23:57:16,524 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 22 [2021-12-06 23:57:16,530 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 32 treesize of output 24 [2021-12-06 23:57:16,551 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 22 [2021-12-06 23:57:16,556 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 32 treesize of output 24 [2021-12-06 23:57:16,625 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 28 [2021-12-06 23:57:16,632 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 38 treesize of output 30 [2021-12-06 23:57:16,666 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 38 treesize of output 30 [2021-12-06 23:57:16,673 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 28 [2021-12-06 23:57:16,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,765 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 1 case distinctions, treesize of input 90 treesize of output 81 [2021-12-06 23:57:16,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,769 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 1 case distinctions, treesize of input 81 treesize of output 81 [2021-12-06 23:57:16,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 270 [2021-12-06 23:57:16,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 327 treesize of output 330 [2021-12-06 23:57:16,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:16,795 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 340 treesize of output 288 [2021-12-06 23:57:16,804 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:16,804 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 294 treesize of output 293 [2021-12-06 23:57:16,815 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 231 treesize of output 223 [2021-12-06 23:57:16,821 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 223 treesize of output 219 [2021-12-06 23:57:16,826 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 219 treesize of output 211 [2021-12-06 23:57:16,832 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 211 treesize of output 195 [2021-12-06 23:57:16,837 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 195 treesize of output 187 [2021-12-06 23:57:17,040 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:17,041 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 13 treesize of output 12 [2021-12-06 23:57:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 23:57:17,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941537024] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:17,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:17,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 45 [2021-12-06 23:57:17,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597955661] [2021-12-06 23:57:17,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:17,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 23:57:17,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 23:57:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1531, Unknown=18, NotChecked=332, Total=2070 [2021-12-06 23:57:17,088 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 46 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:57:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:18,774 INFO L93 Difference]: Finished difference Result 292 states and 316 transitions. [2021-12-06 23:57:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 23:57:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:57:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:18,775 INFO L225 Difference]: With dead ends: 292 [2021-12-06 23:57:18,776 INFO L226 Difference]: Without dead ends: 292 [2021-12-06 23:57:18,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=937, Invalid=5381, Unknown=18, NotChecked=636, Total=6972 [2021-12-06 23:57:18,778 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 538 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1263 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:18,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 1097 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1190 Invalid, 0 Unknown, 1263 Unchecked, 0.4s Time] [2021-12-06 23:57:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-06 23:57:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 163. [2021-12-06 23:57:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 151 states have (on average 1.2384105960264902) internal successors, (187), 162 states have internal predecessors, (187), 0 states have call successors, (0), 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 23:57:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2021-12-06 23:57:18,781 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 36 [2021-12-06 23:57:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:18,781 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2021-12-06 23:57:18,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:57:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2021-12-06 23:57:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:57:18,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:18,782 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:18,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:57:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 23:57:18,983 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1638789957, now seen corresponding path program 2 times [2021-12-06 23:57:18,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:18,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858353361] [2021-12-06 23:57:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:18,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:57:19,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858353361] [2021-12-06 23:57:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858353361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:19,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:57:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309833413] [2021-12-06 23:57:19,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:19,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:57:19,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:57:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:57:19,037 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:19,044 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2021-12-06 23:57:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:57:19,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:57:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:19,045 INFO L225 Difference]: With dead ends: 177 [2021-12-06 23:57:19,045 INFO L226 Difference]: Without dead ends: 177 [2021-12-06 23:57:19,045 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 23:57:19,045 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:19,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 112 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-06 23:57:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 142. [2021-12-06 23:57:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 141 states have internal predecessors, (158), 0 states have call successors, (0), 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 23:57:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-12-06 23:57:19,050 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 36 [2021-12-06 23:57:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:19,050 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-12-06 23:57:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-12-06 23:57:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:57:19,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:19,050 INFO L514 BasicCegarLoop]: trace histogram [3, 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 23:57:19,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 23:57:19,051 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1518619459, now seen corresponding path program 1 times [2021-12-06 23:57:19,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:19,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175769439] [2021-12-06 23:57:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:19,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:19,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175769439] [2021-12-06 23:57:19,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175769439] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241101248] [2021-12-06 23:57:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:19,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:19,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:19,195 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:19,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:57:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 23:57:19,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:19,299 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:57:19,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:19,328 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 23:57:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:57:19,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-12-06 23:57:19,366 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 23:57:19,389 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 20 treesize of output 8 [2021-12-06 23:57:19,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:19,455 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:19,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 23:57:19,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 23:57:19,485 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 14 treesize of output 16 [2021-12-06 23:57:19,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2021-12-06 23:57:19,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:19,582 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 23:57:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:19,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:19,648 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_892 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:19,653 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_892 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:19,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_892 (Array Int Int))) (< (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:19,660 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_891 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_891) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2021-12-06 23:57:19,704 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_39| Int) (v_ArrVal_892 (Array Int Int)) (v_ArrVal_891 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_39|) 0)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_891) |v_ULTIMATE.start_main_~t~0#1.base_39| v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3))) is different from false [2021-12-06 23:57:19,725 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_39| Int) (v_ArrVal_892 (Array Int Int)) (v_ArrVal_891 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_891) |v_ULTIMATE.start_main_~t~0#1.base_39| v_ArrVal_892) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_39|) 0)))) is different from false [2021-12-06 23:57:19,765 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:19,766 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 13 treesize of output 12 [2021-12-06 23:57:19,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:19,918 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:19,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2021-12-06 23:57:19,926 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 23:57:19,926 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 58 [2021-12-06 23:57:19,930 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 24 treesize of output 22 [2021-12-06 23:57:19,933 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 46 treesize of output 42 [2021-12-06 23:57:19,939 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:19,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 23:57:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-12-06 23:57:19,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241101248] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:19,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 47 [2021-12-06 23:57:19,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838563275] [2021-12-06 23:57:19,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:19,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 23:57:19,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 23:57:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1428, Unknown=35, NotChecked=498, Total=2162 [2021-12-06 23:57:19,991 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:57:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:20,976 INFO L93 Difference]: Finished difference Result 171 states and 180 transitions. [2021-12-06 23:57:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:57:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 0 states have call successors, (0), 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 37 [2021-12-06 23:57:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:20,977 INFO L225 Difference]: With dead ends: 171 [2021-12-06 23:57:20,978 INFO L226 Difference]: Without dead ends: 171 [2021-12-06 23:57:20,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=713, Invalid=3559, Unknown=42, NotChecked=798, Total=5112 [2021-12-06 23:57:20,980 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 297 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 871 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:20,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 798 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 884 Invalid, 0 Unknown, 871 Unchecked, 0.2s Time] [2021-12-06 23:57:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-06 23:57:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2021-12-06 23:57:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 125 states have (on average 1.2) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 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 23:57:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-12-06 23:57:20,984 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 37 [2021-12-06 23:57:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:20,984 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-12-06 23:57:20,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 47 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:57:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-12-06 23:57:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:57:20,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:20,985 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:21,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:57:21,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 23:57:21,186 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2120226842, now seen corresponding path program 1 times [2021-12-06 23:57:21,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:21,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846817830] [2021-12-06 23:57:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:21,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:21,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846817830] [2021-12-06 23:57:21,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846817830] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643857167] [2021-12-06 23:57:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:21,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:21,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:21,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:21,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:57:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:57:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:21,467 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:21,467 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 23:57:21,485 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 23:57:21,539 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:21,539 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 28 treesize of output 29 [2021-12-06 23:57:21,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:21,628 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:21,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2021-12-06 23:57:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:21,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:21,764 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_941 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| Int)) (or (< |v_ULTIMATE.start_main_~p~0#1.offset_106| 0) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_941) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_106|)) 1) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_106|))) is different from false [2021-12-06 23:57:21,788 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_941 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| Int)) (or (< |v_ULTIMATE.start_main_~p~0#1.offset_106| 0) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_941) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_106|)) 1) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_106|))) is different from false [2021-12-06 23:57:21,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_941 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_106| Int)) (or (<= (+ (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_941) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_106|)) 1) |c_#StackHeapBarrier|) (< |v_ULTIMATE.start_main_~p~0#1.offset_106| 0) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_106|))) is different from false [2021-12-06 23:57:21,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:21,805 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 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-06 23:57:21,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:21,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-12-06 23:57:21,813 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 13 treesize of output 9 [2021-12-06 23:57:22,013 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:22,013 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 13 treesize of output 12 [2021-12-06 23:57:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-12-06 23:57:22,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643857167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:22,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:22,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2021-12-06 23:57:22,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605429930] [2021-12-06 23:57:22,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 23:57:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 23:57:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=685, Unknown=3, NotChecked=168, Total=992 [2021-12-06 23:57:22,080 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 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 23:57:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:22,482 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2021-12-06 23:57:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:57:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 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) Word has length 39 [2021-12-06 23:57:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:22,483 INFO L225 Difference]: With dead ends: 162 [2021-12-06 23:57:22,483 INFO L226 Difference]: Without dead ends: 162 [2021-12-06 23:57:22,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1270, Unknown=3, NotChecked=234, Total=1806 [2021-12-06 23:57:22,484 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 326 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:22,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 415 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 509 Invalid, 0 Unknown, 359 Unchecked, 0.2s Time] [2021-12-06 23:57:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-06 23:57:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2021-12-06 23:57:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 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 23:57:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-12-06 23:57:22,487 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 39 [2021-12-06 23:57:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:22,487 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-12-06 23:57:22,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 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 23:57:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-12-06 23:57:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:57:22,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:22,488 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, 1, 1] [2021-12-06 23:57:22,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:57:22,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 23:57:22,688 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1302476786, now seen corresponding path program 1 times [2021-12-06 23:57:22,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:22,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143695568] [2021-12-06 23:57:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:22,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:22,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143695568] [2021-12-06 23:57:22,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143695568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457799357] [2021-12-06 23:57:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:22,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:22,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:22,822 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:22,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 23:57:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:22,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 23:57:22,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:22,951 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:57:22,952 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 23:57:22,970 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 23:57:22,973 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:22,980 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 16 treesize of output 8 [2021-12-06 23:57:22,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2021-12-06 23:57:23,048 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 23:57:23,056 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 23:57:23,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:23,188 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_114| Int) (v_ArrVal_992 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~p~0#1.offset_114| 0) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_114|) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_992) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_114|)) 0))) is different from false [2021-12-06 23:57:23,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_114| Int) (v_ArrVal_992 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_992) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_114|)) 0) (< |v_ULTIMATE.start_main_~p~0#1.offset_114| 0) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_114|))) is different from false [2021-12-06 23:57:23,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_114| Int) (v_ArrVal_992 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~p~0#1.offset_114| 0) (= (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_992) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_114|)) 0) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_114|))) is different from false [2021-12-06 23:57:23,222 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:23,222 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-06 23:57:23,227 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:23,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-12-06 23:57:23,230 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 11 treesize of output 7 [2021-12-06 23:57:23,374 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:57:23,374 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 13 treesize of output 12 [2021-12-06 23:57:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-12-06 23:57:23,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457799357] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:23,435 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:23,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-12-06 23:57:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39859498] [2021-12-06 23:57:23,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:23,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 23:57:23,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 23:57:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=632, Unknown=3, NotChecked=162, Total=930 [2021-12-06 23:57:23,436 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 31 states have internal predecessors, (86), 0 states have call successors, (0), 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 23:57:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:23,749 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-12-06 23:57:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:57:23,749 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 31 states have internal predecessors, (86), 0 states have call successors, (0), 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 40 [2021-12-06 23:57:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:23,750 INFO L225 Difference]: With dead ends: 141 [2021-12-06 23:57:23,750 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 23:57:23,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1284, Unknown=3, NotChecked=240, Total=1892 [2021-12-06 23:57:23,751 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 258 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:23,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 388 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 346 Invalid, 0 Unknown, 413 Unchecked, 0.1s Time] [2021-12-06 23:57:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 23:57:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-12-06 23:57:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.1953125) internal successors, (153), 139 states have internal predecessors, (153), 0 states have call successors, (0), 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 23:57:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-12-06 23:57:23,753 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 40 [2021-12-06 23:57:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:23,753 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-12-06 23:57:23,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 31 states have internal predecessors, (86), 0 states have call successors, (0), 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 23:57:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-12-06 23:57:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:57:23,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:23,754 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:23,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 23:57:23,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 23:57:23,954 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:57:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1723491604, now seen corresponding path program 1 times [2021-12-06 23:57:23,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:23,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579499776] [2021-12-06 23:57:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:23,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:24,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579499776] [2021-12-06 23:57:24,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579499776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12541805] [2021-12-06 23:57:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:24,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:24,294 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:24,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 23:57:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:24,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 23:57:24,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:24,522 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:57:24,654 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:57:24,654 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 42 treesize of output 43 [2021-12-06 23:57:24,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:57:24,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-06 23:57:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:57:25,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:26,166 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:26,166 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 1 case distinctions, treesize of input 53 treesize of output 44 [2021-12-06 23:57:26,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:26,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 67 [2021-12-06 23:57:26,174 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 27 treesize of output 19 [2021-12-06 23:57:26,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:26,351 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 1 case distinctions, treesize of input 24 treesize of output 25 [2021-12-06 23:57:26,356 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:57:26,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-12-06 23:57:26,359 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 13 treesize of output 9 [2021-12-06 23:57:51,968 WARN L227 SmtUtils]: Spent 20.13s on a formula simplification. DAG size of input: 56 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:58:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:58:01,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12541805] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:01,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:01,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 48 [2021-12-06 23:58:01,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935815094] [2021-12-06 23:58:01,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:01,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 23:58:01,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 23:58:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2135, Unknown=14, NotChecked=0, Total=2352 [2021-12-06 23:58:01,211 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 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 23:58:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:01,660 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-12-06 23:58:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:58:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 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) Word has length 41 [2021-12-06 23:58:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:01,661 INFO L225 Difference]: With dead ends: 142 [2021-12-06 23:58:01,661 INFO L226 Difference]: Without dead ends: 138 [2021-12-06 23:58:01,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=292, Invalid=2886, Unknown=14, NotChecked=0, Total=3192 [2021-12-06 23:58:01,662 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:01,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 580 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 140 Unchecked, 0.0s Time] [2021-12-06 23:58:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-06 23:58:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-12-06 23:58:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 137 states have internal predecessors, (150), 0 states have call successors, (0), 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 23:58:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2021-12-06 23:58:01,664 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 41 [2021-12-06 23:58:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:01,665 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2021-12-06 23:58:01,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.3958333333333335) internal successors, (115), 49 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 23:58:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2021-12-06 23:58:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:58:01,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:01,665 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:01,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 23:58:01,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:01,867 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:58:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1722074549, now seen corresponding path program 1 times [2021-12-06 23:58:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073013468] [2021-12-06 23:58:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:01,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:02,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:02,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073013468] [2021-12-06 23:58:02,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073013468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:02,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579412017] [2021-12-06 23:58:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:02,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:02,130 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 23:58:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:58:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:02,273 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:58:02,273 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 23:58:02,310 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 23:58:02,444 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:58:02,445 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 32 treesize of output 33 [2021-12-06 23:58:02,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:02,622 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:02,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 14 [2021-12-06 23:58:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:58:02,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:02,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_#StackHeapBarrier|)) is different from false [2021-12-06 23:58:02,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_#StackHeapBarrier|)) is different from false [2021-12-06 23:58:02,761 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_1096) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_#StackHeapBarrier|)) is different from false [2021-12-06 23:58:02,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:02,765 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-06 23:58:02,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-12-06 23:58:02,772 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 11 treesize of output 7 [2021-12-06 23:58:02,872 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 23:58:02,872 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 13 treesize of output 12 [2021-12-06 23:58:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-12-06 23:58:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579412017] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:02,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:02,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 41 [2021-12-06 23:58:02,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719929568] [2021-12-06 23:58:02,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:02,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:58:02,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:58:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1266, Unknown=3, NotChecked=222, Total=1640 [2021-12-06 23:58:02,916 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 41 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 23:58:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:03,660 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-12-06 23:58:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 23:58:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 41 [2021-12-06 23:58:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:03,661 INFO L225 Difference]: With dead ends: 138 [2021-12-06 23:58:03,661 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 23:58:03,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=372, Invalid=3173, Unknown=7, NotChecked=354, Total=3906 [2021-12-06 23:58:03,662 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 88 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:03,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 567 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 446 Invalid, 0 Unknown, 253 Unchecked, 0.2s Time] [2021-12-06 23:58:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 23:58:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-06 23:58:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 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 23:58:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2021-12-06 23:58:03,664 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 41 [2021-12-06 23:58:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:03,664 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2021-12-06 23:58:03,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 41 states have internal predecessors, (107), 0 states have call successors, (0), 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 23:58:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2021-12-06 23:58:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:58:03,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:03,665 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1] [2021-12-06 23:58:03,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 23:58:03,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 23:58:03,865 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:58:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2103618568, now seen corresponding path program 1 times [2021-12-06 23:58:03,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:03,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431012876] [2021-12-06 23:58:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:03,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:04,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431012876] [2021-12-06 23:58:04,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431012876] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987758677] [2021-12-06 23:58:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:04,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:04,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:04,142 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:04,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 23:58:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:04,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 23:58:04,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:04,298 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:58:04,299 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 23:58:04,362 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 23:58:04,370 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:58:04,562 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:58:04,573 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:58:04,573 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2021-12-06 23:58:04,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:58:04,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 25 [2021-12-06 23:58:04,663 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-06 23:58:04,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:58:04,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:58:04,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-12-06 23:58:04,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:04,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:04,760 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 23:58:04,761 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 30 [2021-12-06 23:58:04,765 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 25 treesize of output 25 [2021-12-06 23:58:05,718 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-06 23:58:05,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 117 [2021-12-06 23:58:05,726 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:58:05,726 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 136 treesize of output 129 [2021-12-06 23:58:05,730 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 44 treesize of output 46 [2021-12-06 23:58:05,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:05,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:05,929 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:58:05,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 79 treesize of output 32 [2021-12-06 23:58:05,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:05,934 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2021-12-06 23:58:06,004 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 23:58:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:06,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:06,068 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1185 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1183 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1185) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1184) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1183) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) 2)) is different from false [2021-12-06 23:58:06,078 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1185 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1183 (Array Int Int))) (= 2 (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1185) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1184) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1183) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2021-12-06 23:58:06,083 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1185 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1183 (Array Int Int))) (= 2 (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| .cse0 v_ArrVal_1185) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1184) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1183) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2021-12-06 23:58:06,090 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1178 Int) (v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1185 (Array Int Int)) (v_ArrVal_1184 (Array Int Int)) (v_ArrVal_1183 (Array Int Int))) (= 2 (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 v_ArrVal_1178)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1185) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1184) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1179) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1183) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2021-12-06 23:58:06,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,165 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2021-12-06 23:58:06,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:06,173 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,173 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 65 [2021-12-06 23:58:06,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2021-12-06 23:58:06,192 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 45 treesize of output 27 [2021-12-06 23:58:06,232 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 22 [2021-12-06 23:58:06,254 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 22 [2021-12-06 23:58:06,341 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 22 [2021-12-06 23:58:06,370 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 22 [2021-12-06 23:58:06,398 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 22 [2021-12-06 23:58:06,427 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 22 [2021-12-06 23:58:06,507 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 54 treesize of output 34 [2021-12-06 23:58:06,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,619 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 1 case distinctions, treesize of input 93 treesize of output 94 [2021-12-06 23:58:06,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,624 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 1 case distinctions, treesize of input 94 treesize of output 84 [2021-12-06 23:58:06,631 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 144 [2021-12-06 23:58:06,640 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 350 treesize of output 341 [2021-12-06 23:58:06,649 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:06,650 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 351 treesize of output 275 [2021-12-06 23:58:06,658 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 218 treesize of output 210 [2021-12-06 23:58:06,664 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 210 treesize of output 206 [2021-12-06 23:58:06,669 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 206 treesize of output 198 [2021-12-06 23:58:06,675 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 198 treesize of output 182 [2021-12-06 23:58:07,005 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-06 23:58:07,005 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 37 treesize of output 35 [2021-12-06 23:58:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 23:58:07,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987758677] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:07,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:07,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 49 [2021-12-06 23:58:07,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237460159] [2021-12-06 23:58:07,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:07,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 23:58:07,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 23:58:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1773, Unknown=6, NotChecked=356, Total=2352 [2021-12-06 23:58:07,060 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 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 23:58:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:08,141 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2021-12-06 23:58:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:58:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 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 41 [2021-12-06 23:58:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:08,142 INFO L225 Difference]: With dead ends: 118 [2021-12-06 23:58:08,142 INFO L226 Difference]: Without dead ends: 118 [2021-12-06 23:58:08,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=277, Invalid=2182, Unknown=7, NotChecked=396, Total=2862 [2021-12-06 23:58:08,142 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 48 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:08,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 686 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 278 Invalid, 0 Unknown, 463 Unchecked, 0.1s Time] [2021-12-06 23:58:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-06 23:58:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2021-12-06 23:58:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 0 states have call successors, (0), 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 23:58:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2021-12-06 23:58:08,144 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 41 [2021-12-06 23:58:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:08,145 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2021-12-06 23:58:08,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 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 23:58:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2021-12-06 23:58:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 23:58:08,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:08,145 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1] [2021-12-06 23:58:08,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 23:58:08,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:08,346 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-12-06 23:58:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1352176846, now seen corresponding path program 1 times [2021-12-06 23:58:08,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797965569] [2021-12-06 23:58:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:08,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:08,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797965569] [2021-12-06 23:58:08,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797965569] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161021763] [2021-12-06 23:58:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:08,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:08,766 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:08,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74acab77-19c1-490e-9aed-a36aba85ef5d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 23:58:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 23:58:08,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:08,921 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 23:58:08,935 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 23:58:08,935 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 23:58:08,986 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:58:08,990 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 23:58:09,036 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 19 treesize of output 7 [2021-12-06 23:58:09,182 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:58:09,183 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-12-06 23:58:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:58:09,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 20 [2021-12-06 23:58:09,274 INFO L354 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2021-12-06 23:58:09,274 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 28 treesize of output 45 [2021-12-06 23:58:09,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:09,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:09,391 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 23:58:09,391 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 40 [2021-12-06 23:58:09,408 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:58:09,484 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 31 treesize of output 7 [2021-12-06 23:58:09,837 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-06 23:58:09,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 105 [2021-12-06 23:58:09,843 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-12-06 23:58:11,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:58:11,242 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2021-12-06 23:58:11,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:11,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:58:11,518 INFO L354 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2021-12-06 23:58:11,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 52 [2021-12-06 23:58:11,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-12-06 23:58:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:11,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:11,975 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 34 treesize of output 21 [2021-12-06 23:58:13,080 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1266 Int) (|v_ULTIMATE.start_main_~p~0#1.offset_149| Int) (|v_ULTIMATE.start_main_~t~0#1.base_58| Int) (v_ArrVal_1272 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) |v_ULTIMATE.start_main_~t~0#1.base_58|)) |v_ULTIMATE.start_main_~t~0#1.base_58| v_ArrVal_1272))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (store |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_58| 1) (select (select .cse0 .cse1) (+ |v_ULTIMATE.start_main_~p~0#1.offset_149| 4))) 1) (< 8 v_ArrVal_1266) (< (select (store |c_#length| |v_ULTIMATE.start_main_~t~0#1.base_58| v_ArrVal_1266) .cse1) (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_149|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_58|) 0)) (= |v_ULTIMATE.start_main_~t~0#1.base_58| .cse1) (< |v_ULTIMATE.start_main_~p~0#1.offset_149| 0))))) is different from false [2021-12-06 23:58:13,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:13,140 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 78 [2021-12-06 23:58:13,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_152| Int) (v_ArrVal_1266 Int) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_149| Int) (v_ArrVal_1272 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_29 (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_152|)))) (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_29) .cse0 v_ArrVal_1272))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (store |c_#valid| .cse0 1) (select (select .cse1 .cse2) (+ |v_ULTIMATE.start_main_~p~0#1.offset_149| 4))) 1) (= .cse2 .cse0) (< 8 v_ArrVal_1266) (< |c_ULTIMATE.start_main_#t~mem6#1.offset| |v_ULTIMATE.start_main_~p~0#1.offset_152|) (< (select (store |c_#length| .cse0 v_ArrVal_1266) .cse2) (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_149|)) (not (= (select |c_#valid| .cse0) 0)) (< |v_ULTIMATE.start_main_~p~0#1.offset_152| 0) (< |v_ULTIMATE.start_main_~p~0#1.offset_149| 0)))))) is different from false [2021-12-06 23:58:13,545 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_152| Int) (v_ArrVal_1266 Int) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.offset_149| Int) (v_ArrVal_1272 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse1 (select v_arrayElimArr_29 (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_152|)))) (let ((.cse3 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) v_arrayElimArr_29) .cse1 v_ArrVal_1272))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) |v_ULTIMATE.start_main_~p~0#1.offset_152|) (< 8 v_ArrVal_1266) (= .cse1 .cse2) (= (select (store |c_#valid| .cse1 1) (select (select .cse3 .cse2) (+ |v_ULTIMATE.start_main_~p~0#1.offset_149| 4))) 1) (< (select (store |c_#length| .cse1 v_ArrVal_1266) .cse2) (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_149|)) (not (= (select |c_#valid| .cse1) 0)) (< |v_ULTIMATE.start_main_~p~0#1.offset_152| 0) (< |v_ULTIMATE.start_main_~p~0#1.offset_149| 0)))))) is different from false [2021-12-06 23:58:13,561 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:13,561 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 1 case distinctions, treesize of input 138 treesize of output 108 [2021-12-06 23:58:13,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:13,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 3498 treesize of output 3297 [2021-12-06 23:58:13,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:13,742 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 2830 treesize of output 2062 [2021-12-06 23:58:13,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:13,784 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 2032 treesize of output 1788