./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:30:08,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:30:08,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:30:08,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:30:08,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:30:08,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:30:08,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:30:08,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:30:08,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:30:08,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:30:08,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:30:08,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:30:08,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:30:08,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:30:08,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:30:08,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:30:08,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:30:08,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:30:08,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:30:08,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:30:08,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:30:08,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:30:08,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:30:08,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:30:08,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:30:08,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:30:08,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:30:08,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:30:08,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:30:08,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:30:08,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:30:08,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:30:08,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:30:08,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:30:08,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:30:08,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:30:08,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:30:08,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:30:08,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:30:08,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:30:08,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:30:08,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:30:09,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:30:09,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:30:09,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:30:09,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:30:09,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:30:09,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:30:09,034 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:30:09,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:30:09,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:30:09,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:30:09,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:30:09,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:30:09,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:30:09,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:30:09,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:30:09,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:30:09,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:30:09,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:30:09,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:30:09,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:30:09,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:30:09,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:30:09,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:09,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:30:09,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:30:09,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:30:09,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:30:09,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:30:09,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:30:09,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:30:09,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:30:09,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:30:09,042 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_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2021-11-09 08:30:09,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:30:09,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:30:09,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:30:09,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:30:09,409 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:30:09,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2021-11-09 08:30:09,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/data/140c9cba1/65d8b30ebb434c1fb3bfa6ce8275050d/FLAGa406e8a23 [2021-11-09 08:30:10,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:30:10,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2021-11-09 08:30:10,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/data/140c9cba1/65d8b30ebb434c1fb3bfa6ce8275050d/FLAGa406e8a23 [2021-11-09 08:30:10,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/data/140c9cba1/65d8b30ebb434c1fb3bfa6ce8275050d [2021-11-09 08:30:10,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:30:10,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:30:10,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:10,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:30:10,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:30:10,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:10" (1/1) ... [2021-11-09 08:30:10,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d47728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:10, skipping insertion in model container [2021-11-09 08:30:10,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:30:10" (1/1) ... [2021-11-09 08:30:10,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:30:10,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:30:11,054 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2021-11-09 08:30:11,067 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2021-11-09 08:30:11,071 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2021-11-09 08:30:11,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:11,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:30:11,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2021-11-09 08:30:11,165 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2021-11-09 08:30:11,169 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2021-11-09 08:30:11,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:11,220 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:30:11,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11 WrapperNode [2021-11-09 08:30:11,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:11,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:30:11,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:30:11,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:30:11,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:30:11,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:30:11,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:30:11,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:30:11,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:30:11,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:30:11,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:30:11,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:30:11,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (1/1) ... [2021-11-09 08:30:11,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:11,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:11,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:30:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:30:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:30:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:30:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:30:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:30:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 08:30:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:30:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:30:11,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:30:12,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:12,415 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-09 08:30:12,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:12 BoogieIcfgContainer [2021-11-09 08:30:12,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:12,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:12,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:12,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:12,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:30:10" (1/3) ... [2021-11-09 08:30:12,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c548263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:12, skipping insertion in model container [2021-11-09 08:30:12,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:11" (2/3) ... [2021-11-09 08:30:12,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c548263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:12, skipping insertion in model container [2021-11-09 08:30:12,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:12" (3/3) ... [2021-11-09 08:30:12,428 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2021-11-09 08:30:12,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:12,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-09 08:30:12,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:12,506 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:30:12,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 08:30:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 82 states have (on average 1.4878048780487805) internal successors, (122), 87 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) [2021-11-09 08:30:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 08:30:12,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:12,539 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:12,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2021-11-09 08:30:12,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:12,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830500787] [2021-11-09 08:30:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:12,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:12,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:12,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830500787] [2021-11-09 08:30:12,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830500787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:12,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:12,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:30:12,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891937684] [2021-11-09 08:30:12,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:30:12,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:30:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:30:12,803 INFO L87 Difference]: Start difference. First operand has 88 states, 82 states have (on average 1.4878048780487805) internal successors, (122), 87 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-11-09 08:30:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:12,842 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2021-11-09 08:30:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:30:12,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 [2021-11-09 08:30:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:12,855 INFO L225 Difference]: With dead ends: 172 [2021-11-09 08:30:12,856 INFO L226 Difference]: Without dead ends: 84 [2021-11-09 08:30:12,859 INFO L786 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 [2021-11-09 08:30:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-09 08:30:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-09 08:30:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 83 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) [2021-11-09 08:30:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-11-09 08:30:12,901 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2021-11-09 08:30:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:12,902 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-11-09 08:30:12,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-11-09 08:30:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-11-09 08:30:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 08:30:12,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:12,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:12,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:30:12,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2021-11-09 08:30:12,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:12,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470257534] [2021-11-09 08:30:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:12,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:13,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:13,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470257534] [2021-11-09 08:30:13,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470257534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:13,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:13,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:13,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870485920] [2021-11-09 08:30:13,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:13,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:13,017 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-09 08:30:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:13,096 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2021-11-09 08:30:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2021-11-09 08:30:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:13,099 INFO L225 Difference]: With dead ends: 135 [2021-11-09 08:30:13,099 INFO L226 Difference]: Without dead ends: 131 [2021-11-09 08:30:13,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-09 08:30:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-11-09 08:30:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 87 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2021-11-09 08:30:13,112 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2021-11-09 08:30:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:13,112 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2021-11-09 08:30:13,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-09 08:30:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2021-11-09 08:30:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 08:30:13,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:13,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:13,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:30:13,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2021-11-09 08:30:13,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:13,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474821558] [2021-11-09 08:30:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:13,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:13,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:13,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474821558] [2021-11-09 08:30:13,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474821558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:13,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:13,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:13,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718628890] [2021-11-09 08:30:13,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:13,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:13,329 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand has 4 states, 4 states have (on average 3.5) 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) [2021-11-09 08:30:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:13,693 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2021-11-09 08:30:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:13,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) 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 [2021-11-09 08:30:13,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:13,696 INFO L225 Difference]: With dead ends: 219 [2021-11-09 08:30:13,696 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 08:30:13,697 INFO L786 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 [2021-11-09 08:30:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 08:30:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2021-11-09 08:30:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 100 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2021-11-09 08:30:13,714 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2021-11-09 08:30:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:13,714 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2021-11-09 08:30:13,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) 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) [2021-11-09 08:30:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2021-11-09 08:30:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 08:30:13,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:13,721 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:30:13,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:30:13,722 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2021-11-09 08:30:13,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:13,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984197470] [2021-11-09 08:30:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:14,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:14,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984197470] [2021-11-09 08:30:14,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984197470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:14,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:14,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:30:14,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510470072] [2021-11-09 08:30:14,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:30:14,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:30:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:30:14,381 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:15,953 INFO L93 Difference]: Finished difference Result 211 states and 247 transitions. [2021-11-09 08:30:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:30:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-09 08:30:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:15,966 INFO L225 Difference]: With dead ends: 211 [2021-11-09 08:30:15,967 INFO L226 Difference]: Without dead ends: 160 [2021-11-09 08:30:15,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-11-09 08:30:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-09 08:30:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2021-11-09 08:30:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 102 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2021-11-09 08:30:15,983 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 28 [2021-11-09 08:30:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:15,983 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2021-11-09 08:30:15,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2021-11-09 08:30:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 08:30:15,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:15,986 INFO L513 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, 1, 1, 1, 1] [2021-11-09 08:30:15,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:30:15,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:15,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:15,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2021-11-09 08:30:15,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:15,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858635880] [2021-11-09 08:30:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:15,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:16,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:16,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858635880] [2021-11-09 08:30:16,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858635880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:16,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278182549] [2021-11-09 08:30:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:16,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:16,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:16,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:16,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:30:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:16,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-09 08:30:16,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:18,767 INFO L354 Elim1Store]: treesize reduction 959, result has 10.1 percent of original size [2021-11-09 08:30:18,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 1151 treesize of output 631 [2021-11-09 08:30:19,810 INFO L354 Elim1Store]: treesize reduction 3716, result has 8.9 percent of original size [2021-11-09 08:30:19,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1804 treesize of output 1059 [2021-11-09 08:30:19,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,082 INFO L354 Elim1Store]: treesize reduction 63, result has 64.0 percent of original size [2021-11-09 08:30:20,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 182 [2021-11-09 08:30:20,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 08:30:20,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 08:30:20,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,578 INFO L354 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2021-11-09 08:30:20,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 94 [2021-11-09 08:30:20,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 08:30:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:20,836 INFO L354 Elim1Store]: treesize reduction 17, result has 51.4 percent of original size [2021-11-09 08:30:20,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 86 [2021-11-09 08:30:26,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,341 INFO L354 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2021-11-09 08:30:26,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 139 [2021-11-09 08:30:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,756 INFO L354 Elim1Store]: treesize reduction 57, result has 29.6 percent of original size [2021-11-09 08:30:26,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 158 [2021-11-09 08:30:26,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:26,833 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-09 08:30:26,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 160 treesize of output 103 [2021-11-09 08:30:27,201 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-11-09 08:30:27,204 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 95 [2021-11-09 08:30:27,219 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-11-09 08:30:27,219 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 36 [2021-11-09 08:30:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:27,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278182549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:27,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:27,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-09 08:30:27,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114333124] [2021-11-09 08:30:27,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:30:27,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:30:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:30:27,256 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:28,825 INFO L93 Difference]: Finished difference Result 286 states and 335 transitions. [2021-11-09 08:30:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:30:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-09 08:30:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:28,829 INFO L225 Difference]: With dead ends: 286 [2021-11-09 08:30:28,829 INFO L226 Difference]: Without dead ends: 229 [2021-11-09 08:30:28,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:30:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-09 08:30:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 119. [2021-11-09 08:30:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-11-09 08:30:28,849 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 31 [2021-11-09 08:30:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:28,849 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-11-09 08:30:28,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-11-09 08:30:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-09 08:30:28,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:28,851 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:30:28,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:29,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:29,064 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:29,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2021-11-09 08:30:29,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:29,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757749707] [2021-11-09 08:30:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:29,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:29,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757749707] [2021-11-09 08:30:29,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757749707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:29,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:29,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:29,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118278287] [2021-11-09 08:30:29,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:29,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:29,159 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:29,237 INFO L93 Difference]: Finished difference Result 205 states and 240 transitions. [2021-11-09 08:30:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:29,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2021-11-09 08:30:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:29,239 INFO L225 Difference]: With dead ends: 205 [2021-11-09 08:30:29,240 INFO L226 Difference]: Without dead ends: 136 [2021-11-09 08:30:29,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-09 08:30:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2021-11-09 08:30:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 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) [2021-11-09 08:30:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2021-11-09 08:30:29,267 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 34 [2021-11-09 08:30:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:29,267 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2021-11-09 08:30:29,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2021-11-09 08:30:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 08:30:29,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:29,276 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:29,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:30:29,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1769595066, now seen corresponding path program 1 times [2021-11-09 08:30:29,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:29,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33279663] [2021-11-09 08:30:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:30:29,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33279663] [2021-11-09 08:30:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33279663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:29,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:29,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:29,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541510668] [2021-11-09 08:30:29,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:29,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:29,361 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:29,412 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2021-11-09 08:30:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-09 08:30:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:29,416 INFO L225 Difference]: With dead ends: 136 [2021-11-09 08:30:29,416 INFO L226 Difference]: Without dead ends: 132 [2021-11-09 08:30:29,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-09 08:30:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2021-11-09 08:30:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 100 states have (on average 1.17) internal successors, (117), 102 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-11-09 08:30:29,432 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 41 [2021-11-09 08:30:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:29,433 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-11-09 08:30:29,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-11-09 08:30:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 08:30:29,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:29,435 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:29,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:30:29,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2021-11-09 08:30:29,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:29,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944017740] [2021-11-09 08:30:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:30:30,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:30,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944017740] [2021-11-09 08:30:30,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944017740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:30,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122870461] [2021-11-09 08:30:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:30,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:30,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:30,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:30:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:30,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 142 conjunts are in the unsatisfiable core [2021-11-09 08:30:30,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:30,363 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 [2021-11-09 08:30:30,467 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 08:30:30,467 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 [2021-11-09 08:30:31,256 INFO L354 Elim1Store]: treesize reduction 329, result has 15.9 percent of original size [2021-11-09 08:30:31,256 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 4 case distinctions, treesize of input 324 treesize of output 235 [2021-11-09 08:30:31,371 INFO L354 Elim1Store]: treesize reduction 594, result has 14.0 percent of original size [2021-11-09 08:30:31,371 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 4 case distinctions, treesize of input 357 treesize of output 223 [2021-11-09 08:30:32,609 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-09 08:30:32,610 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 8 new quantified variables, introduced 10 case distinctions, treesize of input 168 treesize of output 75 [2021-11-09 08:30:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:30:32,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122870461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:32,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:32,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-11-09 08:30:32,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848846158] [2021-11-09 08:30:32,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:30:32,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:30:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:30:32,728 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:36,058 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2021-11-09 08:30:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:30:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 states have internal predecessors, (77), 0 states have call successors, (0), 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 44 [2021-11-09 08:30:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:36,060 INFO L225 Difference]: With dead ends: 175 [2021-11-09 08:30:36,060 INFO L226 Difference]: Without dead ends: 110 [2021-11-09 08:30:36,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=362, Invalid=2500, Unknown=0, NotChecked=0, Total=2862 [2021-11-09 08:30:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-09 08:30:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2021-11-09 08:30:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-11-09 08:30:36,070 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 44 [2021-11-09 08:30:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:36,071 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-11-09 08:30:36,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 33 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-11-09 08:30:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 08:30:36,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:36,072 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:36,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-09 08:30:36,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:36,288 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2021-11-09 08:30:36,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:36,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017791806] [2021-11-09 08:30:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:36,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:30:36,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:36,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017791806] [2021-11-09 08:30:36,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017791806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:36,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:36,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:30:36,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295100498] [2021-11-09 08:30:36,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:30:36,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:30:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:36,444 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:36,747 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2021-11-09 08:30:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:30:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-09 08:30:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:36,750 INFO L225 Difference]: With dead ends: 182 [2021-11-09 08:30:36,750 INFO L226 Difference]: Without dead ends: 148 [2021-11-09 08:30:36,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:30:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-09 08:30:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2021-11-09 08:30:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 87 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) [2021-11-09 08:30:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-11-09 08:30:36,777 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 48 [2021-11-09 08:30:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:36,778 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-11-09 08:30:36,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-11-09 08:30:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 08:30:36,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:36,779 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:36,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:30:36,780 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 08:30:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2021-11-09 08:30:36,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:36,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132293136] [2021-11-09 08:30:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:36,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:30:37,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132293136] [2021-11-09 08:30:37,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132293136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490651044] [2021-11-09 08:30:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:37,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:37,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:37,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea3af74-dba7-4abb-a3a5-6f59e0314be5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:30:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:37,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 217 conjunts are in the unsatisfiable core [2021-11-09 08:30:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:38,058 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 [2021-11-09 08:30:38,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:38,407 INFO L354 Elim1Store]: treesize reduction 143, result has 19.7 percent of original size [2021-11-09 08:30:38,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 283 treesize of output 201 [2021-11-09 08:30:38,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:38,470 INFO L354 Elim1Store]: treesize reduction 260, result has 25.7 percent of original size [2021-11-09 08:30:38,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 220 [2021-11-09 08:30:40,784 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-09 08:30:40,784 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 15 treesize of output 15 [2021-11-09 08:30:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:41,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:41,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:44,703 INFO L354 Elim1Store]: treesize reduction 4002, result has 5.6 percent of original size [2021-11-09 08:30:44,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 35 case distinctions, treesize of input 1055 treesize of output 796 [2021-11-09 08:30:44,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:44,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:44,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:47,804 INFO L354 Elim1Store]: treesize reduction 10326, result has 7.5 percent of original size [2021-11-09 08:30:47,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 2064 treesize of output 1614 [2021-11-09 08:30:50,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:50,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:50,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:50,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:30:50,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:50,181 INFO L354 Elim1Store]: treesize reduction 26, result has 69.4 percent of original size [2021-11-09 08:30:50,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 813 treesize of output 594 [2021-11-09 08:31:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:06,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:07,020 INFO L354 Elim1Store]: treesize reduction 474, result has 28.7 percent of original size [2021-11-09 08:31:07,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 6796 treesize of output 5581 [2021-11-09 08:31:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:11,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:31:12,000 INFO L354 Elim1Store]: treesize reduction 348, result has 13.2 percent of original size [2021-11-09 08:31:12,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 5459 treesize of output 3752 [2021-11-09 08:31:12,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:12,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 08:31:12,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:31:12,243 INFO L354 Elim1Store]: treesize reduction 308, result has 26.1 percent of original size [2021-11-09 08:31:12,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 4799 treesize of output 3401